What are benefits of L Carnitine and Creatine? 2024 real user experience on Lemon8 L Carnitine: Benefits, side effects, and dosage Frequent bruising Vitamin C Poor focus Iron Feeling shaky Potassium Dry scalp Omega 3 Low stamina Iron Irritability Vitamin B6 Weak grip Potassium Heavy fatigue Feeling low on energy or hitting a plateau in your fitness goals? L Carnitine can help your body convert fat into fuel, supporting higher energy levels, improved endurance, and a faster metabolism.