Sustagen Nutritional Supplement Milk powder Vanila 400g UK SELLER.  Sustagen Choclate 400g (14.10 oz) A combination of active lifestyle and good nutrients can help your health in so many ways. Sustagen Nutritional Supplement is nutritionally complete. Sustagen contains a wide range of vitamins and minerals and are high in protein, Calcium and low in fat with a low GI. Sustagen replenishes that body and helps maintain energy for longer. Sustagen may also provide the nutrients that may be lacking due to an insufficient diet. Above all, Sustagen has a great taste