Slippery Elm

This herb has a history of use for constipation. It stimulates nerves in the gastrointestinal (GI) tract, which leads to mucus production and provides relief from constipation. Limited research has been done to determine long-term effects. Slippery elm contains the sticky substance mucilage, which coats the GI tract. As a result, it may reduce absorption of some medications if taken at the same time.