Hawthorn is food for the heart and helps maintain vascular integrity. Milk Thisthle is great for damage to the liver. Finally to reduce cravings for sugars a balanced bitter formula is good for this. It should be taken 3 times a day just before meals. Angustora bitters used in Manhattans is only Gentian a cooling bitter.
Bitters also help balance blood sugars.
Bitters are hard to get into a child because you have to taste them to gain the effect, but many children are adaptable. Not everything in it will be supported by all herbalists but it will be a good starting reference point for a scientific based philosphy to medicine such as he was trained in. Make sure he gets the second edition not the first there were changes and additions to it.