Enhance Your Workout with SLU PP 332 and L Carnitine TikTok Injectable vs Oral L Carnitine: Which Works Better? AWP L carnitine supplements bioavailability is very less and according to some studies it takes 8 to 12 weeks for for loss results, so if you decide to supplement with oral L carnitine Injectable L Carnitine How It Works & What to Expect? Injectable L Carnitine: Does It Really Work for Fat Loss? L Carnitine #1 Non Stimulant Fat Burner