306 FOOD FACTS TO EVERY MOTHER WHOSE CHILD HAS A GREEN RATION BOOK WHY even healthy children need cod liver oil and orange juice It's a serious mistake to think that you "needn't bother" with cod liver oil and orange juice just because your child is in good, sound health, eating well and free from colds. No matter how well he is, every child young enough to have a green ration book should still have cod liver oil and orange juice every day, if he is to have continued good health in later years. For firm, strong bones and resistance to colds Cod liver oil, containing Vitamin A and Vitamin D, develops a child's resistance to infections (especially colds and "chesty" complaints).