A guide to nutrients that support mitochondria Mitochondria turn food into usable energy (ATP) and are critical for brain, muscle, and overall health. Stress, aging, and disease can damage them, but certain L carnitine containing food. Groups of healthy products containing vitamins and minerals. Set of fruits, vegetables, meats, fish and dairy Stock Vector Image & Art Alamy What foods are rich in L carnitine (Levocarnitine)? Doctor's Best Acetyl L Carnitine, 1000 mg Per Serving, 120 Veggie Caps