Is Acetyl L Carnitine associated with frequent side effects like headaches in children with ADHD? Consensus If you are like a lot of people, you may have never heard of carnitine but this important nutrient is critical for our body's ability to optimally burn fat required for energy. L Carnitine Side Effects & Risks Migraine Headaches: Opportunities for Management with Precision Nutrition Nutritional Medicine Institute Migraines are a big problem for many people. These severe, nearly disabling headaches can occur anywhere from once a year to three to four times a week. They can last from hours