Ingredients

L-carnitine

Carnitine · L-carnitine L-tartrate · Acetyl-L-carnitine

L-carnitine is a quaternary amino-acid derivative, chemically described as β-hydroxy-γ-trimethylaminobutyric acid, naturally present in the human body and in foods, especially those of animal origin. In supplements it is commonly used as free-form L-carnitine or as salts/esters that supply L-carnitine, such as L-carnitine L-tartrate, acetyl-L-carnitine, and propionyl-L-carnitine. These forms appear in capsules, tablets, powders, or liquids, with serving amounts varying widely depending on the formula. In cosmetics it may be included as a functional ingredient in leave-on or rinse-off products, typically at low concentrations and declared on the INCI list. On labels it can also appear as “carnitine” or under the specific form name, clearly indicating the source of the active substance. As a raw material it is typically offered with standardized purity and is often used in blended formulas alongside other amino acids, vitamins, or other supplement ingredients.