In the past i've definately felt the effects of vasodialators as everyone has mentioned. However, I do think they can play a role in significantly increasing the rate at which post workout nutrients are taken to the muscle. It would make sense that creatine as well as bcaas, and other such nutrients that have a half hour window of opertunity would benifit from increased mobilization to the muslces.

It may not be anabolic persay, but i have exsperience some effects especially when used with creatine.

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