The supplements aisle at Costco is loaded with lots of prodcuts, here's what I think of a few of them. Does Costco Sell L Carnitine Amazon.com: Force Factor L Carnitine Supplement, Liquid L Carnitine 3000 mg to Help Turn Fat Into Energy, Support Muscle Recovery, and Boost Cellular Energy, Maximum Strength, Non GMO, Orange Flavor, 16 Oz. : Health The supplements aisle at Costco is loaded with lots of prodcuts, here's what I think of a few of them. BobbyParrish Facebook NOW Foods L Carnitine 1000 mg, 100 Tablets Unbeatable Prices, Daily Deals VITASHOP