Senna Pods are the dried fruit pods of the senna plant, which is native to northern Africa and parts of Asia. The pods contain glycosides called sennosides that have a laxative effect by stimulating contractions in the colon. They can be steeped in hot water to make a tea that helps relieve constipation. Senna pods FDA-approved nonprescription laxative. The pods have a slightly sweet, earthy taste and the tea has a brownish color. Senna should be used sparingly as it can cause stomach cramping if overused.