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While it would take about a scoop of Whey to get you enough BCAA, BCAA in BCAA supplements are in free form, require no digestion, which makes them faster to impact muscle protein synthesis

"Carnitine." In: Marriott B, Birt DF, Stalling V, Yates A, eds

Too much caffeine may cause nervousness, irritability, sleeplessness, and occasionally rapid heartbeat

CNS Drugs 21 (Suppl 1), 3138 (2007)
