If it is non insulin diabetes
, take Dibonil homoeopathy liquid 10 drops in half cup water twice a day on empty stomach. Check the sugar level every month. This will not work if it is insulin diabetes. He can take Ayurveda capsule Rudved or Cardoved or Suved one capsule per day on empty stomach. This will help to prevent re-clogging of arteries. Drinking Indian Mulberry fruit juice will help to control insulin diabetes, mental tension, energy level etc.