Generally, there is no harm in taking Ku Ben Yan Ling Pills correctly under the guidance of a doctor. The adverse effects of Guoben Yanying Pill are not known. Guoben Yanying Pill is composed of ginseng, maitong, schizandra, ripened dihuang, yam, hyssop, cornelian cherry, eucommia, and so on. It is used for the treatment of fatigue and injury, lumbago and body fatigue, palpitation and insomnia, emaciation of skin, premature whitening of hair, irregular menstruation and blood circulation, and loss of appetite. Contraindicated for pregnant women. Avoid greasy food during the period of consumption. It is not suitable for people with external infection or solid internal heat. This product should be taken before meals. If there is no improvement in symptoms or symptoms worsen during two weeks or during the period of taking the medicine, or new serious symptoms appear, stop taking the medicine immediately and go to the hospital for consultation. If you need to use Ku Ben Yan Ling Pill, you must use it under the guidance of a professional doctor.