Fennel and Papain

I would like to know what the herbs fennel & papain are used for.

Fennel seeds have beneficial effects on the digestive system. Taking fennel seed tea after meals helps to prevent flatulence, reduce griping, and generally improve digestion. On the Indian subcontinent it is common practice to chew on a few fennel seeds after a meal for the same reasons. Fennel also serves to sweeten the breath after meals.
Papain is an enzyme extracted from the papaya fruit. It too improves digestion.
Fennel and papain taken together would be useful for indigestion.