Incidence of Lactose Intolerance Caused by Administration of Granulated Kampo Extracts / 日本東洋医学雑誌

We consecutively enrolled all patients who visited our Kampo clinic from October 2004 to September 2008, and examined whether or not milk drinking causes abdominal fullness, pain or diarrhea in the patients. Among 3,175 patients enrolled, 35 patients (1.1%) complained of symptoms of milk intolerance. Granulated Kampo extracts containing lactose were administered to 20 patients among the 35 patients, but these Kampo extracts did not cause symptoms of lactose intolerance in 13 patients among the 20 patients. The true incidence of lactose intolerance caused by granulated Kampo extracts may be smaller than 1% at most.