In general, Angelica should not be replaced by other substances. Angelica sinensis is a kind of Chinese herbal medicine, a plant of the umbrella family. Angelica is the dried root, sweet, pungent and warm in nature, with the effects of moistening the bowels, tonifying and activating the blood, regulating menstruation and relieving pain. Angelica is used to treat blood deficiency, menstrual disorders, dysmenorrhea, blood deficiency, blood stagnation, blood cold pain, bruises, rheumatism paralysis, carbuncle (a kind of poisonous sores, occurring on the surface of the body, limbs, internal organs of the acute suppurative disease) sores and ulcers, but also to promote gastrointestinal peristalsis, to help defecation, to avoid constipation. Different herbs may have different focuses of action and may have slightly different uses. Even if the main components are the same in each herb, there may be differences in the content. Therefore, strictly speaking, Angelica sinensis should not be replaced by other substances. However, the effects of a single herb are generally limited, so patients are advised to use it together with other herbs as prescribed by the doctor. Unauthorized use of the drug is not recommended to avoid adverse reactions. Note that it is contraindicated for people with dampness in the middle (too much dampness causing fullness and discomfort in the spleen and stomach), loose stools, and is not recommended for pregnant women.