Suggest Dietary Supplements When Suffering From Throat Cancer

wy wife has throat cancer and is fed throuh a peg. she is taking replete 6 times a day with a total caloric intake of 1500 cal. what can she take to suplement this as she was 150. lbs last june and is now down to 115 lbs. she seems to be starving on this amount and needs help getting out of bed she is so weak.