Dingkun Dan is best taken after meals to reduce the irritation to the stomach mucosa. Dingkun Dan is a kind of Chinese patent medicine with the efficacy of nourishing qi and blood, regulating menstruation and relieving depression, as well as beautifying the skin. It is composed of 30 herbs, such as henbane, red ginseng, panax ginseng, white peony and rehmannia, and can be used to treat symptoms such as reduced menstrual flow and painful coldness in the small abdomen during menstruation. Because of its rich medicinal taste, it may cause irritation to the gastrointestinal mucosa if taken before meals, so patients are generally advised to take it after meals. In addition, Dingkun Dan is hot in nature, so if you experience toothache, sore throat or mouth sores during taking the medicine, it is recommended to consult a doctor before deciding whether to continue taking it. During the period of taking Dingkun Dan, you should avoid eating spicy and stimulating food, quit smoking and alcohol, preferably take a light and easy-to-digest diet, and develop good work and rest habits, avoid staying up late, maintain a good psychological state, and increase exercise appropriately.