The supplements aisle at Costco is loaded with lots of prodcuts, here's what I think of a few of them. BobbyParrish Facebook KETO CARNITINE Fat Burner 10x25ml Zena Monohydrate Creatine + D3 K2 gummies are now at Costco. @zena_nutrition As a private label supplement manufacturer myself, I can tell you that creatine monohydrate is well studied and has great benefits. D3 Siren Labs L Carnitine Elite Burn Fat Loss and Metabolism Activator Lemon Lime Nature Made TripleFlex Triple Strength + D3, 200 Caplets Costco Shifting into ketogenic fat burning isn't always quick or easy, even after you cut the carbs. Metabolic resistance can slow the transition to ketosis. Keto Catalyst combines L Carnitine and CoQ10 to support cellular