Angelica dahurica has spasmolytic effect, in which bergamot lactone, xanthotoxin and isoimperatorin B have obvious spasmolytic effect on rabbit ileum. Isoimperatorin can also increase the contractility of rabbit uterus and the tension of earthworm muscle. If the dosage is too large, it is easy to cause general spasm, paralysis and convulsion.

2. Photosensitive reaction

Many people like to apply white powder to the mask, but it will get darker and darker. Because angelica dahurica can produce photosensitivity, its coumarins such as citronellol, xanthotoxin and isoimperatorin B are all photosensitivity substances. When they enter the body, once they are irradiated by sunlight or ultraviolet rays, they will cause solar dermatitis, redness, increased pigment and thickening of the skin at the irradiated area.

3. aggravate yin deficiency and blood heat

Angelica dahurica enters the lung, spleen and stomach meridians. Has the effects of expelling pathogenic wind, removing dampness, reducing swelling and relieving pain. Can be used for treating headache, brow bone pain, toothache, sinusitis, abdominal pain due to cold and dampness, intestinal wind, hemorrhoid and leakage, leucorrhea with reddish discharge, carbuncle, dry and itchy skin, and scabies. Not everyone is suitable for taking angelica dahurica, for example, those who have yin deficiency and blood heat are not suitable for taking angelica dahurica.