100% Organic. Used As Laxative. Combined With Aromatic Herbs. Today senna is a commonly used as a laxative and is found as an active ingredient in products such as Senokot Fletcher's Castoria and Ex-Lax Gentle Nature. Senna can be found growing naturally in most tropical regions of the world. Both its leaves and its seeds are medicinal. Senna is able to relieve constipation by stimulating the colon whereby speeding along the passage of the contents. Consequently there is less time for fluid to be absorbed from the stool and it remains soft. Many individuals claim that preparing senna as a cold tea produces less resin in the tea whereby decreasing the likelihood of abdominal cramps.