NOW Foods L-Carnitine Liquid 1000 mg delivers 1,000 mg of pharmaceutical-grade L-carnitine per tablespoon in a pleasant citrus-flavored liquid format that is absorbed faster than capsules or tablets. L-carnitine is an amino acid derivative that plays an essential role in energy metabolism — specifically in transporting long-chain fatty acids across the inner mitochondrial membrane, where they are oxidized (burned) for energy. This makes carnitine a key regulator of fat metabolism and mitochondrial function. Research supports L-carnitine for exercise performance, cardiovascular health, sperm motility, cognitive support in aging adults, and as a complement to weight management programs. The liquid format provides rapid absorption ideal for pre-workout or morning use. NOW Foods uses pharmaceutical-grade L-carnitine and tests every batch for purity, potency, and identity.