American chestnut contains chemicals called tannins, which help reduce swelling.

American white pond lily contains chemicals called tannins that probably help treat diarrhea by reducing swelling (inflammation).

Red wine also contains a deep pigment called chromogen and tannins, which help the color stick to the teeth.

Bael contains chemicals called tannins, which help treat diarrhea by reducing swelling (inflammation).

Canaigre contains chemicals called tannins that act as a drying medicine and can help reduce swelling.

Agrimony contains chemicals called tannins, which are thought to help conditions such as diarrhea.

But large amounts of agrimony might be unsafe because it contains chemicals called tannins.

High blood pressure: Bayberry contains large amounts of chemicals called tannins.

Alchemilla contains chemicals called tannins, which might help diarrhea.

As they are called tannins, they have the aility to precipitate proteins.