Anybody buy caffeine powder? Opinions.
https://www.yahoo.com/health/pure-caffeine-powder-what-you-need-to-know-92454856242.html
https://www.yahoo.com/health/pure-caffeine-powder-what-you-need-to-know-92454856242.html
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What's the best and safest way to measure?Yes I have for my own preworkout. I don't remember what I dosed it at per serving but something is a little too strong in there.