The ones that do have an impact on me: Caffeine for focus. Magnesium and CoQ10 helps me for energy. Creatine monohydrate for exercise and memory. Vitamin E

The ones that do have an impact on me: Caffeine for focus. Magnesium and CoQ10 helps me for energy. Creatine monohydrate for exercise and memory. Vitamin E for skin and itchiness. I don't take it but my wife does. Yes, most of these were recommended by a doctor. I'm not a doctor. This is not medical advice.