Orgain, Micronized Creatine Monohydrate, Unflavored, 1.48lbs iSatori L CARNITINE Fat Loss Does Costco Sell L Carnitine The supplements aisle at Costco is loaded with lots of prodcuts, here's what I think of a few of them. Amazon.com: Nutricost Acetyl L Carnitine (ALCAR) 500mg, 180 Capsules, 180 Servings Non GMO and Gluten Free, 1 Capsule per Serving : Everything Else Ronnie Coleman Signature Series L Carnitine XS 3000 Sour Apple