This product is a heavily advertised product that claims efficacy in pain relief from any condition. After trying it myself to see if it actually did anything for 30 days, I crossed over to a placebo sugar pill for 30 days. Net/net - no effects from either product on pain relief. I was blinded to which product I was taking so no bias there.
After a thorough review of the scientific and clinical literature (since I am a scientist), there's no rationale for relief factor working on any type of pain. The ingredients contained are there in small doses and even if there were evidence of efficacy, there isn't enough substance to make a difference.
The doctor (not a scientist) mentioned above clearly didn't do his homework or just because the substances at higher doses 'worked' in animals or cellular systems that it meant it worked in people. It doesn't and there's no, none, zero, nada evidence that the ingredients do so either singly or in combination. The product is probably non-toxic in the low doses given but no data there either. The advertised rationale of 4 different biochemical pathways is unsupported by studies or data and is unlikely to be real. So if you have pain and money to burn, then treat this product just like any other untested and unproven OTC product that is unregulated by the FDA. Buyer beware, and if you believe it works - it may. Just don't bet on it.
Bottom Line: No, I would not recommend this to a friend
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