L-citrulline is an amino acid that consists of three functional groups: the amino group (-NH2), the carboxyl group (-COOH) and the side chain containing the citrulline residue. It is a non-protein amino acid, meaning it is not a component of protein, but can play an important role in metabolic processes. L-citrulline occurs naturally in certain food sources, such as watermelons (which are particularly high in L-citrulline), pumpkins, melons, and other fruits. It can also be produced by living organisms through biosynthesis. Hints: Do not exceed the recommended daily dose. Food supplements must not be used as a substitute for a varied diet. Do not use in case of hypersensitivity to any of the ingredients of the preparation. Pregnant women, breastfeeding women and children and adolescents un.