L Carnitine 1500 mg with Vitamin B Promote Physical Performance MaxionNutrition What Are L Carnitine Injections Used For? L Carnitine: Benefits, Side Effects, FAQ, Sources, and Dosage Feeling low energy, struggling with workouts, or hitting a weight loss plateau? L carnitine boosts energy, supports fat burning, and enhances recovery. Ready to feel your best? Stop in for an L Carnitine injection 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