Some supplements that can lower blood sugar may lower it too much if you take them with medication. Other supplements may raise blood sugar. See link below Acetyl L Carnitine 500 mg (60 Count) Compounding Pharmacy of America When to take L carnitine: Dosage, forms, and side effects Did you know L carnitine, a vital amino acid, is naturally produced by your body and found in various foods? While acetyl L carnitine (ALCAR) can be a beneficial supplement for some, most people get Best Time to Take L Carnitine: A Complete Guide The Science of Good Health Acetyl L carnitine Puts Better Brain Health, Mood and Energy on Your Agenda