Digesters in traditional Persian medicine.

Background: Functional gastrointestinal diseases are common in general populations and comprise more than 40% visits to gastroenterologists Treatment options of gastrointestinal diseases have been limited. There are a few medications for functional gastrointestinal diseases and some of medications are not available in the market or in the place where the patient lives. Traditional Persian medicine (TPM) is a branch of alternative and traditional medicine based on individual viewpoint and humoral theory, focuses on lifestyle modification and uses natural products to manage the patients.