HCY 2 is a medical food powder for children and adults with documented homocystinuria.. Methionine-free. Cystine level is similar to the sum of cystine and methionine found in cow's milk.. 22 grams protein equivalent/100 grams powder. Vitamin and mineral levels appropriate for children and adults, including 1140 mcg of vitamin B-6, 2.9 mcg of vitamin B-12 and 410 mcg of folic acid per 100 grams of powder. Suitable for someone with lactose intolerance. Vanilla scented formula can be easily modified with preferred flavor enhancers.. Mixes easily and stays in suspension well. Kosher Dairy (OU-D) and Halal. There are 454 grams of powder in a can..