What it's for Energy metabolism, Cognitive focus Who it may fit Adults who train or exercise regularly and people seeking morning focus during fasting or low-calorie periods. Key actives per serving • Acetyl-L-Carnitine (as acetyl-L-carnitine hydrochloride): 500 mg How to take Take 1 capsule in the morning or before exercise, away from food; avoid taking within 5 hours of bedtime as it may be stimulating. Acetyl-L-Carnitine (as acetyl-L-carnitine hydrochloride) Acetyl-L-carnitine helps shuttle fatty acids into mitochondria for energy production and donates an acetyl group that may support acetylcholine synthesis for mental focus. Caution: May be stimulating for some people; avoid close to bedtime to reduce the chance of sleep disruption.