L Carnitine injection is recommended at 1 ampule every 2 3 days for best results. The L Carnitine is taken intravenously either by normal injection or using a butterfly needle. After taking this L Carnitine, you Rooted Owl Cardio Support Capsules with L Taurine & L Carnitine, 1.8 oz., 60 Ct. Petco Creatine & Acetyl L Carnitine Energy Plus, 0.51 lb Life Extension Omega Healthy Heart for Dogs & Cats L Carnitine, 500 mg, 30 vegetarian capsules Life Extension Both taurine and L carnitine play roles in muscle function, and their combination could potentially enhance muscle health, recovery and weight management. Dr. Thacker breaks down the differences of taurine and L carnitine in