L Carnitine Benefits, Uses, Dosage, Foods, Side Effects Dr. Axe Hydration Benefits of L carnitine injections are aplenty! This injection is a great way to boost your energy levels, help with weight management, and even promote healthy heart function. Studies Farmasi Nutriplus L Carnitine Shots offer several potential benefits, including supporting fat burning, improving endurance, and boosting athletic performance. They also contain green tea extract for L Carnitine Shots are ampoules containing liquid L Carnitine.