n the Ayurvedic medical tradition, neem is considered a useful therapy for ulcers and gastric discomfort.  Compounds in neem have been proven to have antiulcerative effects.  Throughout India, people take neem leaves for all sorts of stomach problems.

Some scientific evidence exists for its effectiveness for these problems.  Peptic ulcers and duodenal ulcers are treated well with neem leaf extracts; nimbidin from seed extracts taken orally prevents duodenal lesions and peptic ulcers, and provides significant reductions in acid output and gastric fluid activity.  Low doses of 20 to 40 mg/kg bring the most relief; increased dosages reduce the effectiveness of neem’s antiulcerative effects.

Neem is also useful in treating other problems in the stomach and bowels.  The herb promotes a healthy digestive system by protecting the stomach, aiding in elimination, and removing toxins and noxious bacteria.  Its leaves are often used to treat heartburn and indigestion.  Some neem extracts reduce the concentration of hydrochloric acid in the stomach.

Neem extracts are also used to treat gastritis.  The extracts reduce the amount of acid in the stomach; their antibacterial and anti-inflammatory properties can relieve the effects of this condition.

Finally, neem has also been shown to be effective for treating digestive disorders such as diarrhea, dysentery, hyperacidity and constipation.  For diarrhea and dysentery one solution is to take one tablespoon of neem leaf juice with sugar three times a day.  For constipation, a neem powder of two or three grams, with three to four black peppers given three times a day is both a laxative and a demulcent.