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Food supplement L-tryptophan and folic acid. More energy and endurance to fatigue and sport to start a day before a promising night's sleep. No effect doping. A group consisting of vitamins B and C, enriched with essential amino acid L-tryptophan, the precursor of serotonin, a neurotransmitter associated with the mechanisms of onset of fatigue. It does not replace any food, but if it helps achieve optimum levels of intake of these elements in some specific cases (convalescence, fatigue, sports).
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