Carnitine Rich Foods: Understanding L Carnitine and Its Benefits Loyal Acetyl L Carnitine 1000mg Tablets High Strength, Focus, Energy, Brain Support Spring Valley L Carnitine Amino Acid Dietary Supplement Tablets for Heart Health, 500 mg, 30 Count HSA FSA Eligible Walmart.com What is L Carnitine? L Carnitine is a naturally occurring amino acid derivative that the human body can synthesize itself. It is mainly found in red meat and dairy products. [1] Core Benefits of L CARNITINE