Weak Evidence Antidepressants Treat Pain in Older Adults

By Crystal Lindell

New research shows that there’s not much evidence that antidepressants actually work at treating pain in people over 65 years old. 

The study, which comes out of the University of Sydney in Australia, is concerning because older adults with chronic pain are often prescribed antidepressants instead of pain medication. 

However, in a frustrating conclusion, the authors still do not recommend the one medication that is proven to treat pain in older adults: Opioids. 

Instead, they suggest that doctors use a “multidimensional approach using non-pharmacological strategies, such as physical exercise and cognitive behavior therapy.” 

In other words, they essentially conclude that pain patients should get no medication.

However, I am glad that more research is coming out to expose how ineffective antidepressants usually are at treating pain. That class of medication has long been held up as an opioid alternative, despite the fact that many patients don’t get much relief from them. 

The researchers found that international guidelines that recommend antidepressants for chronic pain are heavily based on studies that either exclude older adults or include only a small number of them.  

The researchers found that in the last 40 years there have been just 15 clinical trials globally that focused on the use of antidepressants for pain in older people. And many of them were industry-funded trials with fewer than 100 participants.

The authors say their research fills a much-needed information gap, by bringing together the data from these trials to look at the efficacy and adverse effects of antidepressants for acute and chronic pain in older adults..

They found a lack of evidence to support the use of antidepressants for most pain conditions – despite the fact that they are often recommended in clinical guidelines. And none of the research they analyzed looked at the effectiveness of antidepressants for acute pain, such as shingles or muscular pain.

“These medicines are being prescribed to remedy patients' pain, despite the lack of evidence to adequately inform their use,” said co-author Dr. Christina Abdel Shaheed, an Associate Professor at the University of Sydney’s Institute for Musculoskeletal Health.

The findings mirror those of a recent study in the United Kingdom, which found that there is “no reliable evidence for the long‐term efficacy of any antidepressant, and no reliable evidence for the safety of antidepressants for chronic pain at any time point." 

Withdrawal and Other Side Effects

Shaheed says the potential harms of antidepressants in older people are well documented, and should be factored into any decisions about prescribing the medications. The study found that people taking antidepressants experienced more side effects effects, such as falling, dizziness, and a higher risk of being injured. The potential withdrawal if patients abruptly stop taking antidepressants can also be severe.

The study found that duloxetine, which is sold under that brand names Cymbalta and Yentreve, was able to relieve osteoarthritis knee pain in older adults during the intermediate term, but not short-term or long-term.

As a patient who often shares my health issues publicly, I often get messages and questions from readers who are also dealing with chronic pain. Anytime they mention Cymbalta, I pause. 

I had a horrible experience trying to come off Cymbalta, and I don’t think it even helped much with my pain when I was on it. Plus, my columns about the withdrawal experience apparently resonated, because they are among the most-read, liked and commented on articles I’ve ever written. In other words, it’s not just me. 

If Cymbalta or another antidepressant does help someone, I think they should take it. But I don’t think doctors are fully transparent about how bad the withdrawal can be or how little evidence there is that they even help with pain in the first place. 

“For clinicians and patients who might be using or considering duloxetine for knee osteoarthritis, the message is clear: benefits may be seen with a little persistence, but the effects may be small and need to be weighed up against the risk,” said lead author Dr. Sujita Narayan, an Academic Fellow at the Institute for Musculoskeletal Health.

Again, I’m glad the authors are drawing attention to the problems with prescribing antidepressants for pain management. I just find it alarming that they don’t even bother to mention any alternative medications, and instead suggest non-pharmacological treatments. 

Looking back, I guess I took for granted in the early days of opioid-phobia that most people in the medical field at least recognized that giving zero medication for pain was inhumane. That often meant doctors went from prescribing opioids to prescribing antidepressants. It came with a lot of downsides for patients, but at least it was something. 

If the next stage of opioid-phobia really is just “all medications are bad at treating pain,” then things are worse than I thought. And a lot of people are going to be suffering unnecessarily. 

We already have effective treatments, we just need to use them.

Little Evidence That Antidepressants Work for Chronic Pain

By Drs. Hollie Birkinshaw and Tamar Pincus

About one in five people globally live with chronic pain, and it is a common reason for seeing a doctor, accounting for one in five GP appointments in the UK.

With growing caution around prescribing opioids – given their potential for addiction – many doctors are looking to prescribe other drugs, “off-label”, to treat long-term pain. A popular option is antidepressants.

In the UK, doctors can prescribe the following antidepressants for “chronic primary pain” (pain without a known underlying cause): amitriptyline, citalopram, duloxetine, fluoxetine, paroxetine and sertraline. Amitriptyline and duloxetine are also recommended for nerve pain, such as sciatica.

However, our review of studies investigating the effectiveness of antidepressants at treating chronic pain found that there is only evidence for one of these drugs: duloxetine.

We found 178 relevant studies with a total of 28,664 participants. It is the largest-ever review of antidepressants for chronic pain and the first to include all antidepressants for all types of chronic pain.

Forty-three of the studies (11,608 people) investigated duloxetine (Cymbalta). We found that it moderately reduces pain and improves mobility. It is the only antidepressant that we are certain has an effect. We also found that a 60mg dose of duloxetine was equally effective in providing pain relief as a 120mg dose.

In comparison, while 43 studies also investigated amitriptyline (Elavil), the total number of participants was only 3,372, indicating that most of these studies are very small and susceptible to biased results.

The number of studies and participants for the other antidepressants are:

• Citalopram (Celexa): five studies with 209 participants

• Fluoxetine (Prozac): 11 studies with 622 participants

• Paroxetine (Paxil): nine studies with 960 participants

• Sertraline (Zoloft): three studies with 210 participants.

The evidence for amitriptyline, citalopram, fluoxetine, paroxetine and sertraline was very poor, and no conclusions could be drawn about their ability to relieve pain.

This is particularly important as UK prescribing data shows 15,784,225 prescriptions of amitriptyline in the last year. It is reasonable to assume that a large proportion of these may be for pain relief because amitriptyline is no longer recommended for treating depression.

This suggests that millions of people may be taking an antidepressant to treat pain even though there is no evidence for its usefulness. In comparison, 3,973,129 duloxetine prescriptions were issued during the same period, for a mixture of depression and pain.

In light of our findings, which were published in May 2023, the UK’s National Institute for Health and Care Excellence (Nice) recently updated its advice to doctors on how to treat chronic pain.

The updated Nice guidance now suggests 60mg of duloxetine to treat [chronic primary pain] and the same drug and dose to treat nerve pain.

Limited Treatments Options

GPs often report frustration at the limited options available to them to treat patients experiencing chronic pain. Amitriptyline is cheap to prescribe – only 66p per pack (US 82.5 cents) – which may explain the high number of prescriptions for this drug.

This is an example of how the gap between evidence and clinical practice could harm patients. Although our review was unable to establish the long-term safety of antidepressant use, previous research has highlighted the high rates of side-effects for amitriptyline, including dizziness, nausea, headaches and constipation.

It’s important to bear in mind, though, that pain is a very individual experience, and the evidence in our review is based on groups of people. We acknowledge that certain drugs may work for people even when the research evidence is inconclusive or unavailable. If you have any concerns about your pain medication, you should discuss this with your doctor.

Hollie Birkinshaw, PhD, is a Research Fellow at University of Southampton. She specializes in research involving chronic musculoskeletal pain, and the integration of psychology in pain and health services. Birkinshaw receives funding from the UK’s National Institute for Health and Care Research (NIHR).

Tamar Pincus, PhD, is a Professor of Health Psychology at University of Southampton. Her research focuses on the psychological aspects of chronic pain. Pincus receives funding from NIHR, Medical Research Council and Versus Arthritis.  

This article originally appeared in The Conversation and is republished with permission.

‘No Reliable Evidence’ That Antidepressants Work for Chronic Pain

By Pat Anson, PNN Editor

Medical guidelines in the United States and United Kingdom may recommend antidepressants for treating chronic pain, but there is “no reliable evidence” that the medications actually work for that purpose, according to a new Cochrane review.

Cochrane reviews are considered the gold standard in medical research because they use robust methodology to gather good quality evidence, while dismissing poor quality research.

A team of UK researchers, led by scientists at the University of Southampton, spent two years examining 176 clinical trials involving nearly 30,000 patients who were prescribed antidepressants for pain. Among the drugs studied were fluoxetine (Prozac), sertraline (Zoloft), amitriptyline (Elavil), milnacipran (Savella), citalopram (Celexa), paroxetine (Paxil) and duloxetine (Cymbalta).

“Our review found no reliable evidence for the long-term efficacy of any antidepressant, and no reliable evidence for their safety for chronic pain at any point. Though we did find that duloxetine provided short-term pain relief for patients we studied, we remain concerned about its possible long-term harm due to the gaps in current evidence,” said lead author Tamar Pincus, PhD, a Psychology Professor at the University of Southampton.

“This is a global public health concern. Chronic pain is a problem for millions who are prescribed antidepressants without sufficient scientific proof they help, nor an understanding of the long-term impact on health.”

In the United States, duloxetine is FDA-approved for fibromyalgia, diabetic neuropathy and musculoskeletal pain. The recently updated CDC guideline recommends that duloxetine and other SNRI antidepressants be used for fibromyalgia and neuropathy, because they provide “small to moderate improvements in chronic pain and function.”

The UK’s National Institute for Health and Care Excellence (NICE) guideline goes even further, stating that antidepressants are better than opioids and other analgesics in treating fibromyalgia, chronic headache, Complex Regional Pain Syndrome (CRPS), musculoskeletal pain and other types of “primary chronic pain” for which there is no known cause.   

The authors of the Cochrane review say regulators in the US and UK should reconsider their recommendations.

“We are calling on governing health bodies NICE and the FDA to update their guidelines to reflect the new scientific evidence, and on funders to stop supporting small and flawed trials. Evidence synthesis is often complex and nuanced but the evidence underpinning the use of these treatments is not equivalent, so current treatment modalities are hard to justify,” said co-author Gavin Stewart, PhD, a statistician at Newcastle University.

Amitriptyline is one of the most commonly prescribed antidepressants for chronic pain in the world. In the last year, around 10 million prescriptions for amitriptyline were given to patients in England for pain, about twice the number prescribed for depression. Many other antidepressants are also prescribed “off-label” for pain, despite limited evidence to support their use.

“Though previous investigations show that some antidepressants might relieve pain, there has never been a comprehensive study examining all medications across all chronic conditions – until now,” said co-author Hollie Birkinshaw, PhD, a Research Associate at the University of Southampton.

“The only reliable evidence is for duloxetine. Adopting a person-centered approach is critical to treatment and, when patients and clinicians decide together to try antidepressants, they should start from the drug for which there is good evidence.”

The reviewers say duloxetine was the highest-rated antidepressant for treating fibromyalgia, musculoskeletal and neuropathic pain. Standard doses of duloxetine were just as effective as higher ones. Milnacipran was also effective at reducing pain, although the evidence was weaker.

“We simply cannot tell about other antidepressants because sufficiently good studies are not available – but it does not mean that people should stop taking prescribed medication without consulting their GP,” said Pincus.

A common complaint of patients who take duloxetine is that it makes them dizzy and nauseous. Many quickly become dependent on the drug and then have severe withdrawal symptoms when they stop taking it.

Several previous studies have also raised questions about using antidepressants for pain. A recent review of over two dozen clinical trials by Australian researchers found little evidence to support the use of antidepressants in pain management. Nearly half of the trials had ties or funding from the pharmaceutical industry.

Most Antidepressants Ineffective for Chronic Pain

By Pat Anson, PNN Editor

Most of the antidepressant drugs that are prescribed for chronic pain are either ineffective or the evidence supporting their use as pain relievers is weak, according to a new analysis published in The British Medical Journal (BMJ).

The use of antidepressants such as duloxetine (Cymbalta) and fluoxetine (Prozac) has doubled in recent years, with much of the increase due to their off-label prescribing to treat conditions such as fibromyalgia, neuropathy and back pain.

But in a review of 26 studies on the analgesic effects of antidepressants, Australian researchers found little evidence to support their use in pain management. The data on side effects was also weak, meaning the safety of antidepressants was also uncertain. Nearly half of the studies had ties or funding from the pharmaceutical industry.

“Recommending a list of antidepressants without careful consideration of the evidence for each of those antidepressants for different pain conditions may mislead clinicians and patients into thinking that all antidepressants have the same effectiveness for pain conditions. We showed that is not the case,” said lead author Giovanni Ferreira, PhD, from The Institute for Musculoskeletal Health at the University of Sydney.

“Some antidepressants were efficacious for some pain conditions; however, efficacy appears to depend on the condition and class of antidepressant. The findings suggest that a more nuanced approach is needed when prescribing antidepressants for pain.”

Ferreira and his colleagues say no study provided high quality evidence on the effectiveness of antidepressants for any pain condition. 

But they did find moderate quality evidence supporting the use of serotonin-norepinephrine reuptake inhibitors (SNRIs) for back pain, postoperative pain, fibromyalgia and neuropathic pain. Low-quality evidence suggested that SNRIs could be used for pain linked to breast cancer treatment, depression, knee osteoarthritis, and pain related to other underlying conditions.

The researchers say only low-quality evidence supports the use of selective serotonin reuptake inhibitors (SSRIs) for depression and pain related to other conditions; and tricyclic antidepressants (TCAs) as a treatment for irritable bowel syndrome, neuropathic pain, and chronic tension-type headaches. 

Antidepressants ‘Disappointing’ for Most Pain Patients

An accompanying editorial, also published in The BMJ, said the study adds to growing evidence that many medications prescribed for pain – not just antidepressants – are only modestly effective.

“Their findings suggest that for most adults living with chronic pain, antidepressant treatment will be disappointing. This is important given emerging concerns about increases in the prescribing of antidepressants and the challenges patients describe when trying to withdraw from treatment,” wrote Cathy Stannard, MD, UK National Health Service, and Colin Wilkinson, a pain patient and consultant at Centre for Pain Research, University of Bath.

“Clinicians continue to prescribe medicines for which the evidence is poor because they observe that some people respond to them, albeit modestly. But all medicines carry risk of harm and there are other, less potentially harmful options more likely to help people to live well with pain.”

Stannard and Wilkinson said exercise and physical activity might be better options than medication for some patients.

Ironically, a little over a year ago, the UK’s National Institute for Health and Care Excellence (NICE) released new guidelines that recommend antidepressants for adults with chronic primary pain, even when they are not depressed. NICE said antidepressants may help with quality of life, pain, sleep and psychological distress.

The NICE guideline is at odds with other studies that found antidepressants are minimally effective for back pain and osteoarthritis and often have adverse side effects. A common complaint of patients who take Cymbalta, for example, is how quickly they became dependent on the drug and have severe withdrawal symptoms when they stop taking it.

UK Guidelines Recommend Exercise and Antidepressants for Chronic Pain

By Pat Anson, PNN Editor

Doctors in the United Kingdom are being advised not to prescribe any type of painkiller to patients suffering from fibromyalgia, chronic headache, Complex Regional Pain Syndrome (CRPS), chronic musculoskeletal pain and other types of “primary chronic pain” for which there is no known cause.   

Those conditions should be treated with exercise, cognitive behavioral therapy (CBT), acupuncture and antidepressants, according to new guidelines released by the UK’s National Institute for Health and Care Excellence (NICE). The NICE guideline is far more strict on the use of analgesics than current treatment guidelines in the U.S. and Canada.

The recommendation against using painkillers goes beyond just opioids, and includes many widely used pain relievers such as paracetamol (acetaminophen), non-steroidal anti-inflammatory drugs (NSAIDs), gabapentinoids and corticosteroids, as well as benzodiazepines such as Valium and Xanax.

“There is little or no evidence that they make any difference to people’s quality of life, pain or psychological distress, but they can cause harm, including possible addiction,” NICE said in a statement.

The guideline says antidepressants such as duloxetine (Cymbalta) and fluoxetine (Prozac) “can be considered” for adults 18 and over with chronic primary pain, even when there is no diagnosis of depression. NICE said antidepressants may help with quality of life, pain, sleep and psychological distress.

“This guideline is very clear in highlighting that, based on the evidence, for most people it’s unlikely that any drug treatments for chronic primary pain, other than antidepressants, provide an adequate balance between any benefits they might provide and the risks associated with them,” Dr. Paul Chrisp, director of NICE’s Centre for Guidelines, said in a statement.

“People who are taking medicines to treat their chronic primary pain which aren’t recommended in the guideline should ask their doctor to review their prescribing as part of shared decision making. This could involve agreeing a plan to carry on taking their medicines if they provide benefit at a safe dose and few harms, or support for them to reduce and stop the medicine if possible.”

The NICE guideline sticks to more traditional recommendations for treating “chronic secondary pain” for which there is a known underlying cause, such as osteoarthritis, rheumatoid arthritis, ulcerative colitis and endometriosis. Pain management for palliative care is not covered in the guideline.

‘Patently Ridiculous’

Although a draft version of the NICE guideline was released last August, pain sufferers were startled by some of the final recommendations, especially those for acupuncture, CBT and exercise.

“The idea that a run around the block will zap the torment of people in chronic pain is patently ridiculous. It doesn’t do a damned thing for my hip,” said James Moore, a UK disability activist who uses a wheelchair. “Did none of the people who contributed to this not read it through this guidance and spot any of the gaping holes in its logic? How is it that I can see them and they can’t?”

“I fear the consequences for those with unsympathetic GPs who suddenly find themselves without medication that may work for them,” Moore wrote in the Independent. “This guidance urgently needs a rethink. Sadly, there may be torture looming for those in torment before we get one.”

The NICE guideline is at odds with recent studies that found antidepressants are minimally effective as pain relievers and often have adverse side effects. A common complaint of pain patients who take duloxetine, for example, is how quickly they became dependent on the drug and have severe withdrawal symptoms when they stop taking it.

The UK guideline also differs from treatment recommendations made by U.S. health agencies. The FDA and CDC recommend gabapentinoids for fibromyalgia, and acetaminophen and NSAIDs for low back pain and migraine.   

The CDC is currently in the process of updating and possibly expanding its opioid guideline to include recommendations for opioid tapering, short-term acute pain, migraine and other pain conditions. 

Antidepressants Ineffective for Back Pain and Osteoarthritis

By Pat Anson, PNN Editor

Antidepressants like duloxetine (Cymbalta) are increasingly being prescribed to treat various types of pain, but a new study shows the medications are largely ineffective for people suffering from chronic back pain or osteoarthritis and may even cause harm.

Many clinical guidelines recommend using antidepressants as pain relievers – even when depression is not involved -- yet evidence supporting that use is uncertain. To address that knowledge gap, researchers at the University of Sydney reviewed data from 33 controlled trials involving more than 5,000 adults who took antidepressants for low back or neck pain, sciatica, or hip or knee osteoarthritis.

Their findings, published in The BMJ, show that for people with back pain the effects of antidepressants were too small to be worthwhile, but for those with osteoarthritis there may be a small beneficial effect.

“The use of antidepressants to treat people with chronic back pain and osteoarthritis is increasing worldwide, but prior to our work, it was not clear whether antidepressants relieved pain or were safe,” said lead author Dr. Giovanni Ferreira, PhD, a postdoctoral research fellow at the Institute for Musculoskeletal Health at the University of Sydney. 

“We conducted a review of all randomised clinical trials evaluating the efficacy of antidepressants for people with back pain or knee osteoarthritis and found that for back pain the antidepressants were either ineffective or provided a very small effect, which was unlikely to be perceived as worthwhile by most patients. For people with osteoarthritis, effects were still small, but could be potentially perceived as worthwhile by some patients” 

Ferreira and his colleagues reviewed six classes of antidepressants: serotonin-noradrenaline reuptake inhibitors (SNRIs); selective serotonin reuptake inhibitors (SSRIs); noradrenaline-dopamine reuptake inhibitors (NDRIs); tricyclic antidepressants; and tetracyclic antidepressants. 

Results showed that SNRIs such as duloxetine reduced back pain after three months, but the benefits were so small they were unlikely to be considered clinically important to most patients. SNRIs had a slightly stronger effect on sciatica and osteoarthritis pain. 

Tricyclic antidepressants were ineffective for back pain, but might reduce pain in people with sciatica, although the evidence for that was weak.  

Industry Funded Studies 

Importantly, about two-thirds of people taking SNRI antidepressants experienced an adverse event such as nausea, fatigue, mood swings and weight gain.

“Many people are being treated with these medications that may not be helping their pain and may be doing them harm,” said Ferreira, adding that doctors need to be upfront with patients about possible side effects.

Researchers say the long-term effects of antidepressants prescribed for chronic pain are not well known and many of the studies that do exist were sponsored by industry, raising the risk of bias. 

“Many people are being treated with these medications that may not be helping their pain and may be doing them harm.”

— Dr. Giovanni Ferreira

“Large, definitive trials free of industry ties are urgently needed to evaluate the efficacy of antidepressants,” Ferreira said. “There needs to be more transparency about how evidence coming from those trials is appraised by guideline panels. A good starting point would be to consider all industry-funded trials to be at high risk of bias, and downgrade the strength of recommendations where industry-sponsored trials represent an important part of the available evidence.”

The Food and Drug Administration recently approved duloxetine as a treatment for fibromyalgia in pediatric patients, largely on the basis of a small trial conducted by Eli Lilly, Cymbalta’s manufacturer. Children enrolled in the study did show a modest improvement in pain, but several of them had serious adverse events, including two attempted suicides, suicidal thoughts, an intentional drug overdose, depression and hallucinations.

In their published findings in the journal Pediatric Rheumatology, Eli Lilly researchers downplayed the adverse events associated with duloxetine, saying they were not drug related or “not significantly different” than those of children on placebo. The two attempted suicides aren’t even mentioned.

A common complaint of patients who take duloxetine is how quickly they become dependent and what happens when they stop taking the drug. Many complain of severe withdrawal symptoms, including electric-like sensations called “brain zaps.”

Duloxetine’s checkered history is well known at the FDA. The agency’s adverse events reporting system has recorded nearly 35,000 cases involving duloxetine since 2007, most of them classified as psychiatric disorders. Over 4,000 of those adverse events resulted in death.

Young Adults, Latinos and Low-Income Households Feeling Psychological Distress

By Pat Anson, PNN Editor

The COVID-19 pandemic appears to be taking a heavy toll on America’s mental health. A new survey conducted by researchers at the Johns Hopkins Bloomberg School of Public Health found that psychological distress among U.S. adults tripled — from 3.9 percent in 2018 to 13.6 percent in April 2020.

Psychological distress was even more acute among young adults aged 18­–29. Nearly one in four (24%) had symptoms of anxiety and depression.

Distress was also high among Latino adults (18.3%) and adults living in low-income households (19.3%) making less than $35,000 a year.

Nearly 1,500 adults were surveyed about their mental health between April 7 to April 13, when much of the country was still under a coronavirus lockdown. Researchers say their findings, recently published in JAMA, suggest the U.S. will face a wave of mental health problems even after the pandemic ends.

“We need to prepare for higher rates of mental illness among U.S. adults post-COVID,” said lead author Emma McGinty, PhD, associate professor in the Bloomberg School’s Department of Health Policy and Management. “The study suggests that the distress experienced during COVID-19 may transfer to longer-term psychiatric disorders requiring clinical care.

“It is especially important to identify mental illness treatment needs and connect people to services, with a focus on groups with high psychological distress including young adults, adults in low-income households, and Hispanics.”

Older adults seem to be handling the emotional challenges of the pandemic better, with only 7.3% of Americans aged 55 and older reporting psychological distress in April. So are people in households making over $75,000 a year. Only about 8% of Americans in that category reported distress.

Surprisingly, the survey found only a slight increase in feelings of loneliness, from 11 percent in 2018 to 13.8 percent in 2020, suggesting that loneliness is not driving the psychological distress people are feeling.

Zoloft Shortage

Increased demand for antidepressants during the pandemic has led to shortages of Zoloft and its generic version, sertraline. The Food and Drug Administration recently added the antidepressant to its list of drug shortages. Drug manufacturers say they “cannot support monthly demand” for sertraline, in part because of low supplies of its active ingredient. The shortages are expected to continue for the next few months.   

Sertraline is a selective serotonin reuptake inhibitor (SSRI) and the most commonly prescribed antidepressant. Over 49 million prescriptions for sertraline were written in 2018, according to the IQVIA Institute, making it the 11th most dispensed drug in the United States.

In the early stages of the pandemic, pharmacy benefit manager Express Scripts reported a spike in prescriptions for anti-anxiety medications such as Xanax and Valium, as well as antidepressants and anti-insomnia drugs.

One in Four Adults in England Take Addictive Meds

By Pat Anson, PNN Editor

Nearly 12 million people – about one in four adults in England -- are taking addictive prescription drugs to treat depression, anxiety, insomnia or chronic pain, according to a new review by Public Health England (PHE).

The review takes a cautionary view on the use of five drug classes – opioids, antidepressants, benzodiazepines, gabapentinoids, and so-called “z-drugs” such as zolpidem, zopiclone and zaleplon.

“The medicines we looked at help to make millions of people every year feel better and recover from their illness. Doctors can prescribe them because there is good evidence that they work, but they do have some risks,” the PHE report found.

Benzodiazepines, z-drugs, opioids and gabapentinoids are associated with dependence and withdrawal, while there’s a risk of withdrawal with antidepressants. When the drugs are taken in combination or in high doses, there is also risk of respiratory depression and overdose.  

About half the patients prescribed the drugs in England had been taking them for at least a year — a sign of dependence. But the report cautions doctors not to abruptly discontinue the drugs and to taper them gradually, if at all.

“There is a view that a sub-population of chronic pain patients can be prescribed long-term opioids at relatively stable doses so that their analgesia and functioning can be maintained with good adherence and tolerable side-effects,” the report found.

“We do not want to put anyone off safely using medicines that could help them. Stopping or limiting the use of medicines could also cause harm, including increasing the risk of suicide or making people try to get medicines or illegal alternatives from less safe sources, such as illegal websites or drug dealers.”

Increasing Use of Antidepressants and Gabapentinoids

Antidepressants were prescribed to about 7.3 million people in England or 17% of the adult population. Opioids were prescribed to 5.6 million patients, followed by gabapentinoids (1.5 million), benzodiazepines (1.4 million) and z-drugs (1 million). Prescriptions for opioids, benzodiazepines and z-drugs are dropping, while the use of antidepressants and gabapentinoids is growing. 

Gabapentinoids such as pregabalin (Lyrica) and gabapentin (Neurontin) were originally developed to treat epilepsy, but the drugs are increasingly prescribed in the UK to treat neuropathy and other types of chronic pain. PHE researchers found only marginal evidence that they are effective for pain and alarming signs that they are being misused. 

“Gabapentinoids have come to be used for a wider range of indications than is supported by the evidence or their licensing, and they have sometimes been prescribed in place of opioids or benzodiazepines in the likely-mistaken belief that they are less liable to misuse or dependence, and lack of awareness of the withdrawal problems that can arise when prescribing is stopped,” the report said. 

Prescriptions for opioids and gabapentinoids were 1.6 times higher in parts of England with more poverty. People in poor areas are also more likely to be prescribed medicines for longer periods. Prescription rates for women are about 1.5 times higher than for men. Prescription rates also increased with age.

Study Finds Antidepressants Make Tramadol Less Effective for Pain Relief

By Pat Anson, PNN Editor

Common antidepressants interact with the opioid medication tramadol to make it less effective for pain relief, according to a small new study from University Hospitals (UH) in Cleveland. The findings suggest that some patients who exceed their prescribed dose of tramadol may be under-medicated and are seeking more effective pain relief.

Prescriptions for tramadol – which is sold under the brand names Ultram and ConZip – have increased in recent years because it is widely perceived as a “safer” opioid with less rick of addiction. Many patients, however, say tramadol is not as effective as hydrocodone, oxycodone and other opioids.  

UH researchers reviewed the prescription records of 152 patients who received tramadol for at least 24 hours.

Those patients who were also taking the antidepressants Prozac (fluoxetine), Paxil (paroxetine) or Wellbutrin (bupropion) required three times more tramadol per day to control their breakthrough pain, compared to patients not taking the antidepressants.

Previous studies on healthy volunteers have shown effects on blood levels when combining tramadol with those particular antidepressants. However, this was the first study to document the effects of this interaction in a real-world setting with pain patients.

"We knew that there was a theoretical problem, but we didn't know what it meant as far as what's happening to pain control for patients," said Derek Frost, PharmD, a UH pharmacist and lead author of the study, which was published in the journal Pharmacotherapy.

Frost says millions of Americans may be suffering the ill effects of this drug-to-drug interaction.

"Tramadol relies on activation of the CYP2D6 enzyme to give you that pain control," Frost said. "This enzyme can be inhibited by medications that are strong CYP2D6 inhibitors, such as fluoxetine, paroxetine and bupropion.

“Many chronic pain patients are taking antidepressants, mainly selective serotonin reuptake inhibitors (SSRIs), which many of these CYP2D6 inhibitors fit into. There are a lot of patients who experience both, unfortunately. The likelihood that somebody on one of these offending agents and tramadol is relatively high."

Frost says the problem has a relatively easy fix.

"We have a lot of other antidepressants available that are in the same class of medication that don't inhibit this particular enzyme, such as Zoloft (sertraline), (Celexa) citalopram and Lexapro (escitalopram)," he said. "You also have other options for pain control - non-opioid medications such as NSAIDs. If we need to use opioids, a scheduled morphine or a scheduled oxycodone would avoid this interaction."

Tramadol is a synthetic opioid that was rescheduled by the Drug Enforcement Administration in 2014 as a Schedule IV controlled substance, a category that means it has a low potential for abuse. That same year, hydrocodone was rescheduled as a Schedule II drug, meaning it has a high potential for abuse. Many patients who were taking hydrocodone were switched to tramadol as a result of the rescheduling.

Opioid Pain Meds Rarely Involved in Suicide Attempts

By Pat Anson, Editor

Opioid pain medication is involved in less than 5 percent of the attempted suicides in the United States, according to a large new study of emergency room visits.

Researchers at Johns Hopkins University School of Medicine studied a national database of more than one billion emergency department visits from 2006 to 2013, and found that antidepressants and anti-anxiety drugs were far more likely to be used in an attempted suicide than opioid medication.

The findings appear to contradict numerous government and media reports suggesting that opioids play a significant role in the nation’s rising suicide rate.  A recent VA study, for example, found that veterans receiving the highest doses of opioid painkillers were more than twice as likely to die by suicide.

According to the Centers for Disease Control and Prevention, suicides in the U.S. increased by 31 percent over the past decade and are now the 10th leading cause of death. In 2014, nearly 43,000 Americans committed suicide, three times the number of overdose deaths that were linked to prescription opioids.

The Johns Hopkins researchers were puzzled to find that while suicides had risen, there was no corresponding increase in attempted suicides. Their findings are published in the journal Epidemiology and Psychiatric Sciences.

"What stood out to us the most is that while the rate of fatal suicide has increased, the overall rate of nonfatal suicide attempts has not changed much over the years, nor have the patterns -- age, sex, seasonality, mechanism, etc. -- changed much," said lead author Joseph Canner, interim co-director of the Johns Hopkins Surgery Center for Outcomes Research.

Canner and his colleagues analyzed over 3.5 million emergency department visits involving patients who were admitted for attempted suicide or self-inflicted injury. Poisoning was the most common means of injury, accounting for two-thirds of all suicide attempts. Benzodiazepines, anti-anxiety medication, tranquilizers and antidepressants were the most commonly used drugs.

Codeine, morphine, methadone and other opioid medications were involved in only 4.9% of the suicide attempts.

The study confirmed that suicide attempts peak during the spring, dispelling the popular myth that suicides increase during the holiday season. Attempted suicides actually decreased in November and December.

Over 80 percent of those who were admitted for a suicide attempt suffered from a mental health disorder, a broad category that includes depression, anxiety, substance abuse and alcohol disorders.

There have been anecdotal reports of suicides increasing in the pain community since the release of the CDC’s opioid prescribing guidelines in March, 2016. But the guidelines – and their impact on suicides – did not fall within the study period. Johns Hopkins researchers also did not study the relationship between chronic pain and attempted suicide.

“The study fails to reflect, evaluate or acknowledge suicides after the crackdown on opioid analgesics to relieve chronic and intractable pain,” said Twinkle VanFleet, a chronic pain sufferer, patient advocate and suicide survivor.

“Chronic pain sufferers are at a higher risk in contemplation, ideations, and actual attempts on their lives due to the CDC guidelines being developed without consideration to the suffering… inflicting fear in providers to prescribe and fear in patients to live.”

Earlier this year, VanFleet said she became suicidal due to her own undertreated pain. She sought help from two doctors and also went to an emergency room – and was sent away all three times without treatment.

“I still don't know why I'm still here,” she said.

Why I’m Afraid to Go to My Pain Clinic

By Staci Dangerfield, Guest Columnist

I have an appointment to see my pain management clinic today and I am afraid.

I am always afraid before these appointments. I am afraid I'll once again be told that I am ineligible for pain medication. I am afraid that I'll again be pressed to do trigger point injections, despite their proven inefficiencies.

I am afraid that I'll be taken off one or more antidepressants and placed on others. Though I admit I am depressed, my depression has little to do with actual hormonal or emotional imbalances and a whole lot more to do with being in constant and relentless pain.

I am afraid that I will once again be passed on to a nurse practitioner or, as happens usually, a student nurse. I have yet to meet with a doctor.

I am worried that my attempts to convey my symptoms will be met with skepticism and just as often absolute negation. I feel like I am taunted by the school yard bully: "Lose weight, exercise, use positive thinking, rest more, sleep less, be more social” and so on and so on. My tears and sobs scoffed at, to the point I am distraught, giving credence to the antidepressant regime.

I am afraid that asking once again for narcotic and opioid pain relief, a proven and effective treatment for me, will lead to the “drug seeker” label. I am afraid that the moment the treatment room door closes, I will once again face dehumanization and my legitimate diagnosis becomes a game of Russian roulette.

STACI DANGERFIELD

How much more pain can I accept before I really do lose my mind and those antidepressants that I now do not need will become my lifeline to sanity, as I force my body to endure the radically painful sub-existence the doctors took an oath to prevent? Up, up, and up those dosages go until I am no longer capable of articulating my physical pain. Not that the pain goes away, mind you, because I am emotionally too numb to fight the pain.

I once read that pain is your body's way of telling you something is wrong. So why is my body being ignored in favor of shutting down my pain receptors and as a byproduct my entire emotional spectrum?

I am afraid of having to tell the pain center that my dentist ordered me 15 Norco pills because I have a massive abscess in my tooth. Today is my pain clinic appointment and tomorrow I will have three teeth extracted. Will I be punished for accepting the precious pain relief the dentist offered?

I didn't ask my dentist for pain relief. He saw my pain. He assessed how badly I needed relief and he ordered a minimal amount of medication to last the week of antibiotics, until the extraction could be done. I am afraid of the response from the pain clinic. Like a bad girl who knows she'll be severely punished.

More than anything, I am afraid of going back to the pain clinic with hope. Hope that this time there will be time to hear me. Hope that this time I will be treated humanely and with compassion. Hope that there will be a dialog of options that includes treatment of my physical pain. Hope that I will leave that clinic with a sense of peace, with a prescription for my pain. Hope that tomorrow I can wake up with a little less pain and a bit of anticipation for a better day. Hope that government stays out of my doctor’s office.

More than anything else, I want to not be afraid. I want to believe that hope is an option again.

Staci Dangerfield suffers from fibromyalgia, neuropathy, chronic fatigue, post-traumatic stress syndrome, severe anxiety, degenerative disc disease and chronic migraines. Staci lives in Alabama with her family.

Pain News Network invites other readers to share their stories with us.  Send them to:  editor@PainNewsNetwork.org. 

The information in this column should not be considered as professional medical advice, diagnosis or treatment. It is for informational purposes only and represents the author’s opinions alone. It does not inherently express or reflect the views, opinions and/or positions of Pain News Network.