Marnys L-Carnitine+vitamin B5 contains L-Carnitine and vitamin B5 (pantothenic acid). L-Carnitine is a natural compound that can be produced in the body from the essential amino acids lysine and methionine, or ingested through the diet. It is stored primarily in skeletal muscle, but is also found in plasma (albeit at much lower concentrations). The L-Carnitine in Marnys L-Carnitine+vitamin B5 is formulated with the highest quality ingredients, L-Carnitine Tartrate that provides 66% of L-Carnitine certified by the Drug Master File (DMF) document that contains complete product information including chemistry, manufacturing, purity, impurity profile, active control thus guaranteeing the quality, safety, stability and purity of the raw material. How to use: -Take 4 capsules a day, preferably 2 hours before exercise or, failing that, on an empty stomach.