Study Finds ‘Evidence Lacking’ for Most Fibromyalgia Treatments

By Pat Anson, PNN Editor

A new analysis has found little evidence to support the long-term use of any medication or therapy to treat fibromyalgia, a poorly understood disorder characterized by widespread body pain, fatigue, poor sleep and depression.

An international team of researchers from Brazil and Australia reviewed 224 clinical trials of fibromyalgia treatments and found many of them small and of poor quality. High quality evidence was found for cognitive behavioral therapy (CBT), anti-depressants, and central nervous system (CNS) depressants as short and medium-term treatments for fibromyalgia. No treatment was found to be effective long term.

“In this systematic review, the effectiveness of most therapies for fibromyalgia was not supported. Strong evidence supported only cognitive behavioral therapy for pain, as well as antidepressants and central nervous system depressants for pain and quality of life, but these associations were small,” wrote lead author Vinícius Cunha Oliveira, PhD, an adjunct professor at Federal University of the Valleys of Jequitinhonha and Mucuri in Brazil.

“Some therapies may be associated with small reductions in pain and improvements in quality of life in people with fibromyalgia; however, current evidence is lacking for most therapies.”

The study findings, published in JAMA Internal Medicine, reflect what many fibromyalgia sufferers already know; many treatments are ineffective in improving their symptoms.

The Food and Drug Administration has approved only three drugs for fibromyalgia; the antidepressants duloxetine (Cymbalta) and milnacipran (Savella), and the anti-seizure medication pregabalin (Lyrica). All three drugs were originally developed for other medical conditions and are being repurposed as treatments for fibromyalgia.

A large 2014 survey of fibromyalgia patients by the National Pain Foundation found that most people who tried the three FDA-approved drugs did not feel they were effective.

Exercise, acupuncture, massage, electrotherapy, myofascial release, and several other non-pharmaceutical treatments are also commonly recommended for fibromyalgia pain. Researchers found only “moderate” evidence to support their short-term use. High quality evidence was only found for CBT, a form of meditation in which a therapist works with a patient to reduce unhelpful thinking and behavior.

“Clinicians should be aware that current evidence for most of the available therapies for the management of fibromyalgia is limited to small trials of low methodological quality,” researchers concluded. “Clinicians and patients should choose therapies by considering other important outcomes in addition to those presented in this review, such as adverse effects, out-of-pocket costs, and patient preferences.”

The National Institutes of Health estimates about 5 million Americans have fibromyalgia. Most people diagnosed with fibromyalgia are women, although men and children also can be affected.

Lyrica, Cymbalta and Savella: Do They Work?

By Lana Barhum, Columnist

If you have fibromyalgia, chances are your doctor has prescribed one or more of the three drugs approved for fibromyalgia by the U.S. Food and Drug Administration (FDA).   It is also likely you have been disappointed when they didn’t work and by the side effects they caused.

I have tried Lyrica (pregabalin), Cymbalta (duloxetine) and Savella (milnacipran). My experience is they don’t work well and clinical research doesn’t offer up enough credible evidence that they do.

Patient feedback on these medications is actually more telling than recent studies.  Just check any fibromyalgia online forum and you will find your unpleasant experiences with these medications aren’t unique and shared by many.

Lyrica

Lyrica was developed by Pfizer as a treatment for epilepsy, but it is now widely prescribed for many different types of pain. Lyrica was approved by the FDA in 2007 as the first drug specifically for the treatment of fibromyalgia. Pfizer notes on its website that Lyrica “significantly relieves fibromyalgia pain and improves physical function” in fibromyalgia patients.  But does it really?

An initial study from 2005, with results published in Arthritis & Rheumatology, found Lyrica to be effective at relieving pain in only 29% of the 529 fibromyalgia patients in the study group. 

A major shortcoming of the study was that weight gain affected 10% of the study participants.

What was also interesting about the Arthritis & Rheumatology study is that a large number of participants dropped out due to Lyrica's side effects, which included edema, dry mouth, weight gain, infection, increased appetite and constipation.

A 2014 study of out of the University of Calgary, with results published in the journal Therapeutic Advances in Drug Safety,  also found that Lyrica causes edema and weight gain in some patients. 

Those side effects, especially the weight gain, aren’t worth it for a drug that doesn’t seem to work well for most people. You would get more benefit from dietary changes for fibromyalgia than with Lyrica - at least that was my experience. 

All I got from taking Lyrica was a 40 pound weight gain that took me two years to take off. I made the mistake of staying on it for too long, believing that it would one day work for me.

Cymbalta

Cymbalta was originally developed and marketed by Eli Lilly as a treatment for depression. You may even remember some of the commercials for it. In 2008, Cymbalta become the second drug approved by the FDA to treat fibromyalgia.

While Cymbalta doesn’t have stellar ratings amongst fibromyalgia patients, it does outperform Lyrica in my opinion. Initial trials, with results published in The Primary Care Companion to The Journal of Clinical Psychiatry, show that over a third (36%) of study participants reported at least a 50% reduction in pain, based on a dosage of 60 mg once or twice per day.

A report published in the journal Expert Review of Clinical Immunology found that many participants dropped out of Phase I, II, and III trials of Cymbalta due to side effects, including nausea, headache, and sleep issues. 

Cymbalta has given me some pain relief over the years, but I have also made changes to my diet and lifestyle which may have helped as well.  If Cymbalta has helped me with anything, it is managing the depressed feelings fibromyalgia often leaves in its wake.

Savella

My Savella experience was far worse than my experiences with Lyrica and Cymbalta.  I could only stay on it for two weeks because the side effects were more than I could handle. Dizziness, vertigo, nausea, fatigue, and severe headache were a few of the side effects that stood out.  And I didn’t get any fibromyalgia pain or symptom relief.

Savella was developed by Forest Laboratories specifically for fibromyalgia and was approved by the FDA in 2009.

Like Lyrica and Cymbalta, studies confirm Savella’s poor performance. One double-blind study, reported in the journal Pharmacy & Therapeutics, found that only about one in four fibromyalgia patients (26%) were getting pain relief. 

The rate of discontinuation due to Savella’s side effects and treatment failure was also high -- nearly 43 percent.

In 2010, the consumer advocacy group Public Citizen petitioned the FDA to remove Savella from the market because it increased blood pressure in patients who didn’t have high blood pressure to start with. The group also argued Savella posed an increased risk for suicidal thoughts.

The FDA responded last year and denied Public Citizen’s petition, but said it would continue to monitor the safety of Savella.

My Thoughts

The only medication that I have seen that offers real improvement is Pfizer’s Neurontin (gabapentin), which is prescribed “off label” because it is not specifically approved to treat fibromyalgia by the FDA. Neurontin has helped my nerve pain and I also take muscle relaxers as needed, as I am frequent sufferer of muscle cramps and spasms. 

Studies have confirmed Neurontin’s effectiveness in treating fibromyalgia pain and improving sleep and fatigue. One double-blind study, with results published in Arthritis & Rheumatism, found that over half (51%) of fibromyalgia patients were finding relief with Neurontin.   

That’s not bad for a medication that was originally developed to manage seizures and whose formula has been the same since 1993. While it has helped me, I certainly understand Neurontin hasn’t helped everyone. There are even reports of Neurontin being abused by addicts. 

I am not sure why the makers of Lyrica, Cymbalta and Savella continue to market medications that don’t offer most people real results.  Yet, these medications remain available and doctors are still prescribing them to treat fibromyalgia. 

Let's just hope there are new fibromyalgia drugs on the horizon that actually work and give us real and reliable symptom and pain relief.

What has been your experience with Lyrica, Cymbalta and Savella?

Lana Barhum is a freelance medical writer, patient advocate, legal assistant and mother. Having lived with rheumatoid arthritis and fibromyalgia since 2008, Lana uses her experiences to share expert advice on living successfully with chronic illness. She has written for several online health communities, including Alliance Health, Upwell, Mango Health, and The Mighty.

To learn more about Lana, visit her website.

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