Angelica dahurica

Angelica dahurica contains furanocoumarins, including byakangelicin, isoimperatorin, and phellopterin, which exhibit anti-inflammatory and analgesic properties. In Traditional Chinese Medicine, it releases the exterior and disperses wind-cold, helping open nasal passages and relieve headache pain. These compounds may reduce nasal mucosal swelling and modulate inflammatory pathways. Evidence level: C (preliminary clinical evidence). The herb also contains xanthotoxin and bergapten, which contribute to its therapeutic effects, though more research is needed to fully elucidate its mechanism of action.

Angelica dahurica contains furanocoumarins that may affect cytochrome P450 enzymes, potentially altering the metabolism of certain drugs. Due to its photosensitizing compounds, it may increase photosensitivity when combined with other photosensitizing medications. Caution is advised with anticoagulants or antiplatelet drugs, as some coumarin derivatives may affect blood clotting. Evidence level: C (limited clinical data). Patients taking prescription medications should consult a qualified healthcare provider before using this herb to avoid potential interactions.

The standard adult dosage for Angelica dahurica is 3-9 grams of dried root daily, typically prepared as a decoction. Standardized extracts are commonly dosed at approximately 300mg daily. In Traditional Chinese Medicine formulations, the herb is often combined with other herbs, and dosages may vary based on the specific condition being treated. Evidence level: C (preliminary clinical evidence). Always follow product labeling instructions or consult a qualified practitioner, as individual needs may vary based on health status and treatment goals.

Angelica dahurica is considered unsafe during pregnancy and should be avoided, particularly in large doses. Traditional Chinese Medicine contraindicates its use in pregnancy due to potential effects on the uterus. The herb contains compounds that may stimulate uterine contractions or affect hormonal balance. Women who are pregnant, nursing, or attempting to conceive should not use this herb without explicit guidance from a qualified healthcare provider. Evidence level: Traditional use contraindication. Always consult a healthcare professional before using herbal medicines during pregnancy.

Common side effects of Angelica dahurica include photosensitivity due to its furanocoumarin content, which may cause skin reactions when exposed to sunlight. Gastrointestinal upset, including nausea and discomfort, has been reported in some individuals. The herb is contraindicated in cases of yin deficiency with heat signs or fire excess headache. Evidence level: C. Users should avoid prolonged sun exposure while taking this herb and discontinue use if adverse reactions occur. Consult a healthcare provider if side effects persist or worsen.