NOW Foods L-Carnitine 500 mg provides pharmaceutical-grade carnitine in a standard-strength vegetarian capsule — the essential amino acid derivative that transports long-chain fatty acids into mitochondria for energy production. L-carnitine is the backbone of fat metabolism at the cellular level, and deficiency results in impaired fat burning and energy production. Supplementation supports fat metabolism, cardiovascular health (carnitine is highly concentrated in heart muscle), exercise performance, and recovery. It is particularly studied for heart failure support, dialysis patients, and male fertility (sperm motility). NOW Foods delivers pure L-carnitine without artificial additives in a convenient vegetarian capsule, manufactured in their GMP-certified facility with raw material identity verification and potency testing. A foundation supplement for metabolic and cardiovascular health.