I just feel drained, do amino acids really help?

My local Popeye's employee (who's opinion isn't just about selling product since he competes in body building and has helped my cousin do the same) suggested Amino Acids for energy to help me get my workouts done.

One he recommended was Aminolast - Recovery & Endurance BCAA Superfuel.  I do respect his opinion but I'm not completely sold.  I'm REALLY struggling to lose weight and my two main problems is lack of energy and intense refined carb (aka chip) cravings and put those two together plus crazy hours at work means I gained 10 lbs in 2 months :(

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