People have different digestion issues. It really depends what's giving you the problems. Ginger can help certain types of digestion problems. Also, since the bloat seems to involve water buildup, drinking extra water and taking some Dandelion Root could help. There are also special digestive enzyme products.
I have problems digesting Lactose, and although Lactaid and Acidopholus can help with problems digesting dairy products, I just prefer to minimize my milk intake and get my milk protein from Isolated Milk Protein powder.