Unlike most dietary supplements, hundreds of well managed scientific studies and trials have upheld resveratrol’s potentially critical health properties as a treatment for diabetes, cancer, inflammatory and auto-immune diseases and neurological conditions. Without passing judgement on resveratrol’s actual efficacy or effectiveness it is clear that many people purchase resveratrol as a preventative or treatment for a serious medical condition. If the resveratrol these consumers purchase is not a high quality, properly manufactured, bio active compound they are not only wasting their money but are also failing to obtain whatever benefits resveratrol may offer for the amelioration of their condition.
The criteria below are based upon valid scientific principals and accepted standards for the evaluation Ibutamoren of either a of a functional dietary supplement such as resveratrol. The standards can also be used in judging other supplements.
Many resveratrol suppliers do not disclose the exact form of resveratrol or the quantity which is contained in their supplement. Some simply call their main ingredient “red wine complex” or a “proprietary blend”. Given that red wine contains less than 1% resveratrol it seems a bit strange that a company would use this description to label a resveratrol product unless the purpose was to conceal the actual ingredients in the product. A proprietary blend can be anything, but is unlikely to consist of pure resveratrol given the relatively high cost of quality resveratol versus other possible ingredients.
Resveratrol is composed of two principal isomers, trans-resveratrol and cis-resveratrol. Only the trans-isomer has been associated with health benefits. The cis isomer actually acts to nullify the effects of trans-resveratrol. Unless the seller states on the label that the product consists entirely of the trans-resveratrol form it is highly likely that it contains either some or all of cis-resveratrol, which is, by an order of magnitude, the less costly form of resveratrol.