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You swallow the scoop and, within minutes, your skin prickles. The odd thing about beta-alanine is that you can feel it today—but its real work shows up weeks...

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In 1808, a young Humphry Davy hooked his new battery to a paste of "lime," boiled off the mercury, and—against all expectations—pulled a silvery metal from...

L-Carnitine
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Creatine
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L-Glutamine
The same white powder scooped into smoothies by gym-goers is also an FDA-approved prescription that helps people with sickle cell disease avoid hospital...

