Ensure nutrition supplement 400g (vanilla) complete, balanced nutrition for adults. contains 32 nutrients including high protein, calcium and vitamin d. has 100% rda of essential nutrients. ensure – nutritional benefits. ensure has been carefully formulated to include all the key ingredients for a nutritionally-balanced health drink. in addition, as a source of energy and high-quality protein, ensure includes 28 essential vitamins and minerals to help keep you strong and healthy.