Neem is generally accepted in the Ayurdive medical tradition as a therapy for ulcers and gastric discomfort. People throughout the Indian subcontinent take neem leaves for relief of stomach problems of any sort. Scientific validation of these practices is consistent in studies of the effectiveness of neem extracts for gastric relief.
Compounds in neem have been proven to have anti-ulcerative effects. Oral doses of neem leaf extracts gave significant protection against peptic ulcers, duodenal ulcers and enhanced the healing process of gastric lesions. Nimbidin from seed extract taken orally prevented duodenal lesions and peptic ulcers. They provided significant when doses were low ( 20 to 40 mg/kg ) and increased dosages actually reduced the effectiveness of neem's anti-ulcerative effects. Neem seed extracts also showed significant healing effects from this compound for existing lesions. Similar compound have been found in leaf extracts in lesser concentrations.
Drinking neem tea or whole leaves will protect the stomach and reduce the discomfort. To heal the lesions and ulcers, a thirty-day regimen must be followed. Between meals, drink a cup of neem tea along with one teaspoon of a bismuth containing product usually used for indigestion