After eating the detox drink in Thailand 711, the stomachache is caused by personal allergy to certain ingredients or digestive system's difficulty in accepting certain ingredients, which causes gastrointestinal discomfort. Some ingredients in detoxified drinks, such as fruit and vegetable fiber and probiotics, may cause gastrointestinal discomfort for some people, such as abdominal distension, diarrhea, nausea and vomiting. In addition, the addition of some herbal ingredients to the detoxification beverage will also cause irritation to the stomach and cause stomach pain.