Optimum is an American company that produces supplements for athletes, and especially for those doing power sports. The wide range includes amino acid supplements, creatine, glutamine, carbohydrates supplements, gainers, fat burners, post-workout supplements and complexes of vitamins and minerals.
Testosterone booster containing zinc, magnesium and vitamin B6. It supports sleep and regeneration.
Supplement with melatonin which improves sleep quality.