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 Amazon.com : Taurine Supplement for Dogs Meets RDA of 500 mg per 25lbs Weight Unlike Most Alternatives, 120ct, Helps Maintain Dog Heart Health, Normal Function of The Cardiac Muscle & Normal Blood Carnitine: the claims and why it may not work 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