By Pat Anson, Editor

Nearly 17 million fewer prescriptions were filled for opioid pain medications in the U.S. in 2015, driven largely by a significant decline in prescriptions for hydrocodone, according to a new report by IMS Health.

The report adds further evidence that the so-called “epidemic” of opioid abuse and addiction is increasingly being fueled by illegal opioids such as heroin and illicit fentanyl, not by prescription pain medication intended for patients.

Hydrocodone was reclassified by the Drug Enforcement Administration as a Schedule II controlled substance in October, 2014 – making 2015 the first full year that more restrictive prescribing rules for the pain medication were in effect. But hydrocodone prescriptions were falling even before the rescheduling. They peaked in 2011 at 137 million and fell to 97 million in 2015, a 30% decline.

Hydrocodone is typically combined with acetaminophen to make Vicodin, Lortab, Lorcet, Norco, and other brand name hydrocodone products. The rescheduling of hydrocodone limits pain patients to an initial 90-day supply and then requires them to see a doctor for a new 30-day prescription each time they need a refill.

“It is not surprising that we have seen a dramatic drop in hydrocodone prescribing,” said Lynn Webster, MD, past president of the American Academy of Pain Medicine and vice president of scientific affairs at PRA Health Sciences. “Patients are being told they are not going to be prescribed opioids in general by many physicians. Since hydrocodone has been the most prescribed, it is the most affected. Schedule II opioids are more of a hassle so prescribers shun away from them.

“What is most striking is that the number of unintentional overdoses are still climbing despite fewer pills being prescribed.  Obviously this is a reflection that the goal to reduce harm from reduced prescribing is not working.  We have to wait to see if that trend continues.”

The Centers for Disease Control and Prevention recently adopted new guidelines that discourage primary care physicians from prescribing opioids for chronic pain. The agency also reported that 28,647 Americans died from opioid overdoses in 2014 and attributed about 19,000 of those deaths to prescription opioids. However, the CDC admits the data is flawed. Some overdoses may have been counted twice and some deaths blamed on prescription medications may have been caused by illegal opioids.

Hydrocodone Falls to #3

For several years hydrocodone was the #1 most widely filled prescription in the U.S. It now ranks third behind levothyroxine (Synthroid), which is used to treat thyroid deficiency, and lisinopril (Zestril), which is used to treat high blood pressure.

“Over 16.6 million fewer prescriptions were filled for narcotic analgesics, driven mainly by a sharp decrease in prescriptions for acetaminophen-hydrocodone, whereas prescriptions for oxymorphone, another controlled substance, increased 5.3%,” the IMS report said.

Oxymorphone is the generic name for Opana, a semisynthetic opioid that is also abused by drug addicts.  

The IMS report also found an increasing number of prescriptions being written for gabapentin (Neurontin), a medication originally developed to treat seizures that is now widely prescribed for neuropathy and other chronic pain conditions.  About 57 million prescriptions were written for gabapentin in 2015, a 42% increase since 2011.

After steadily increasing for several years, the number of prescriptions for tramadol appears to have leveled off, according to IMS. Last year about 43 million prescriptions were written for tramadol, a weaker acting opioid also used to treat chronic pain.

Overall spending in prescription drugs reached $310 billion in 2015, according to IMS, a 8.5% increase largely fueled by expensive new brand name and specialty drugs.