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 in the Treatment of Peripheral Neuropathies: A Narrative Review Pain and Therapy Springer Nature Link Amazon.com: Doctors Best Acetyl L Carnitine 1000 mg Per Serving Acetyl L Carnitine Supplement for Men & Women, Supports Brain & Nerve Cell Function, Mental Focus, Helps Generate Cellular Energy 60 Veg 4 Supplements To Avoid With Blood Pressure Medications. See link below Our cardiologist explains which vitamins and supplements to avoid with high blood pressure.