Liquid L Carnitine 3000 delivers a powerful blend of three forms of L Carnitine to support fat metabolism, endurance, and recovery. Each serving packs 3000 mg in a fast absorbing, no mixing required liquid that L carnitine Insentials Carnitine: Which type is right for you? L carnitine helps transport fatty acids into the mitochondria, where they are used to produce energy, supporting fat metabolism and overall energy levels.