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 How can L Carnitine help in your Journey of Wellness? Osoaa 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 Carnitine: the claims and why it may not work L Carnitine in the Treatment of Psychiatric and Neurological Manifestations: A Systematic Review