Rainbow tea belongs to a kind of green tea, drinking rainbow tea time is recommended as follows:

Drinking after meals is good, green tea belongs to the unfermented tea, tea contains caffeine, will stimulate the stomach, so it is recommended to drink a period of time after meals to reduce the stimulation of the stomach and intestines, and can be to go to the greasy, to help digestion;

Don't drink rainbow tea on an empty stomach. When fasting, the caffeine in green tea, catechins will stimulate the intestinal tract, leading to gastrointestinal discomfort, causing stomach pain and stomach discomfort, making people feel uncomfortable;

Ulcer patients should not drink rain tea: caffeine in rain tea tea can promote gastric acid secretion, elevate the concentration of gastric acid, inducing ulcers and even perforation.