The findings of multiple RCTs indicate that cannabinoids effectively treat chronic pain. Do cannabinoids effectively treat the chronic pain associated with fibromyalgia?
No. According to a Cochrane systematic review published in 2016 on the use of cannabinoids to treat fibromyalgia, there is no convincing, unbiased, high-quality evidence suggesting that a cannabinoid-based medicine (nabilone) is of value in treating people with fibromyalgia. Furthermore, the tolerability of nabilone was low in people with fibromyalgia. Also, the results of a 2019 study where 4 varieties of pharmaceutical grade marijuana were administered by single shot vapor to fibromyalgia patients indicated that none of the 4 marijuana varieties had an effect greater than placebo. (Note: The data from the 2019 study could not be used to extrapolate the long-term effects of cannabinoids on fibromyalgia-associated pain.)