How Do Opioids and NSAIDs Compare for Chronic Pain?

By Roger Chriss, PNN Columnist

With the ongoing push to reduce opioid prescribing because of the risk of addiction and overdose, claims that non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen are better have become common.

Dr. Andrew Kolodny, founder of Physicians for Responsible Opioid Prescribing (PROP), recently claimed that “NSAIDs are as effective and in some cases more effective than opioids, even for excruciating painful conditions.”

But it’s not that simple. There are few research studies that directly compare opioids and NSAIDs, and little progress has been made since I wrote about this issue in 2017.

The best we can do is to look at Cochrane reviews of opioids and NSAIDs for specific types of pain management. The Cochrane organization provides unbiased, systematic reviews that are widely accepted as gold-standard evidence.

Cochrane on Opioids

A 2010 Cochrane review found that that opioids for long-term non-cancer pain may be useful in select patients and that opioid addiction was rare.

“Many patients discontinue long-term opioid therapy (especially oral opioids) due to adverse events or insufficient pain relief; however, weak evidence suggests that patients who are able to continue opioids long-term experience clinically significant pain relief,” the authors concluded. “Many minor adverse events (like nausea and headache) occurred, but serious adverse events, including iatrogenic opioid addiction, were rare.

More recent Cochrane reviews found that opioids provide some benefit for restless leg syndrome and rheumatoid arthritis, but little for osteoarthritis.  For neuropathic pain, the results are mixed.  

“Short-term studies provide only equivocal evidence regarding the efficacy of opioids in reducing the intensity of neuropathic pain. Intermediate-term studies demonstrated significant efficacy of opioids over placebo,” reviewers found. “Analgesic efficacy of opioids in chronic neuropathic pain is subject to considerable uncertainty.  Reported adverse events of opioids were common but not life-threatening.”

For specific opioids, results vary. Cochrane found limited, low-quality evidence for oxycodone for neuropathy. Findings for tramadol were discouraging for neuropathic pain and osteoarthritis.

But extended release tapentadol (Nucynta) provided better pain relief for musculoskeletal pain than oxycodone and placebo, although “the clinical significance of the results is uncertain.”

Cochrane on NSAIDs

The findings for NSAIDs are similarly mixed and the type of pain matters a lot.

For chronic low back pain, Cochrane found that in about half of clinical trials NSAIDs were more effective than placebo for reducing pain and disability, but “the magnitude of the effects is small, and the level of evidence was low.”

For neuropathic pain in adults, a Cochrane review found “no good evidence to tell us whether or not oral NSAIDs are helpful to treat neuropathic pain conditions.”

For kidney stone pain, Cochrane found that “NSAIDs were more effective than other non‐opioid pain killers including antispasmodics for pain reduction.”

For fibromyalgia, the evidence for NSAIDs is weak, with reviewers concluding that “NSAIDs cannot be regarded as useful for treating fibromyalgia.”

And for chronic non-cancer pain in children and adolescents, Cochrane reports that “we have no evidence to support or refute the use of NSAIDs.”

Of course, what works for an individual cannot necessarily be predicted from a Cochrane review. Clinical decision-making involves a risk/benefit assessment, with consideration for each patient’s specific circumstances and close follow-up to monitor outcomes. Safety is paramount as well, in particular for drugs like opioids that have significant risks.

In sum, it is difficult to make a blanket statement about opioids versus NSAIDs for chronic non-cancer pain. Results vary by specific opioids and type of pain. We need better studies to inform clinical practice and improve patient outcomes.

Roger Chriss lives with Ehlers Danlos syndrome and is a proud member of the Ehlers-Danlos Society. Roger is a technical consultant in Washington state, where he specializes in mathematics and research.