Amazon.com: Life Extension L Carnitine 500 mg, Energy Supplement, Memory Supplement Free Form Amino Acid, Nitric Oxide Support, Healthy Blood Pressure Gluten Free, Non GMO, Vegetarian 30 Capsules : Health & Household Acetyl L Carnitine 1,500 mg High Potency Supports Energy Production, Supports Memory Focus 100 Veggie Capsules Acetyl L Carnitine (ALCAR) 150 x 500 mg capsules by Double Wood Supplements Cognitive, Memory, Stamina Support Acetyl L carnitine 500 Mg