A capsule containing L-citrulline malate. badge_aspartame_free Aspartame-free badge_gluten_free_composition Gluten-free badge_gmo_free GMO-free badge_vegan Vegan Dietary supplement in capsule form containing amino acids. Pure active ingredient content Easy dosage Mega capsule packaging Absorption The amino acid L-citrulline is a non-essential micronutrient that the body cannot produce in sufficient quantities (conditionally essential), typically during times of increased stress; therefore, additional intake may be necessary. Among fruits, watermelon, for example, contains large amounts of citrulline. L-citrulline malate is the synergistic combination of malic acid and the amino acid L-citrulline. Malic acid (malate) is an organic acid found in nature (e.g., in apples). The amino acid L-citrulline is the primary building block of the amino acids L-arginine and L-ornithine. This formula is very popular among athletes.BioTechUSA