The supplements aisle at Costco is loaded with lots of prodcuts, here's what I think of a few of them. GHOST Energy Drink Lands at Costco in 15 Can Variety Packs with 3 Flavors! Nutrex Research, LIPO 6 Carnitine, 60 Capsules Amazon.com: Ronnie Coleman Signature Series L Carnitine XS 3000 Liquid, Amino Acids Metabolism and Lean Muscle Strength Support, Stimulant Free, Sugar Free, Zero Carbs, Blue Razz, 16 Oz : Health & Household Carnitine in Costco Bobby Approved TikTok L Carnitine Costco