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About Angelica sinensis
Plant: Angelica sinensis (Dong Quai)
Contains coumarin compounds that dilate blood vessels, improving circulation to organs and muscles. In Lyme therapy it's used to help lower Lyme neurotoxin levels such as quinolinic acid — part of the neuroborreliosis support set.
Reference dosing
| Tincture dose — 1:5 | 1.25–2.5ml, 3 times daily |
| Tincture dose — 1:3 | 0.75–1.5ml, 3 times daily |
| Capsule dose (mg) | 250–500mg of dried herb, 3 times daily Calculated from Buhner's tincture dose (1ml of a 1:5 tincture = 200mg of dried herb). |
Capsule whole-herb extracts vary by manufacturer (a concentrated extract needs less than a plain powder). Treat these figures as a guide only and follow the product label.
These are figures from the sources used on this site. They are not a prescription. Follow the product label and your prescriber.
Safety and cautions
Contraindications: Pregnant and breastfeeding women should avoid dong quai (miscarriage risk, Memorial Sloan Kettering). It may add to the effect of blood thinners such as warfarin and raise bleeding risk, and it may raise PT/INR results. Possible hormone-sensitive effect: ask a doctor first if you have a hormone-sensitive cancer. Prolonged use may speed up the breakdown of some medicines (CYP3A4). Reported side effects include bloating, diarrhoea, sensitivity to sunlight and high blood pressure. Always check with your prescriber or pharmacist, especially if you take blood thinners or other regular medicines.
Herbs can interact with prescription medicines and other supplements. Check with your prescriber or pharmacist first, and do not use herbs in pregnancy or while breastfeeding unless a doctor agrees.
Information last checked: 6 November 2026.
Symptoms linked to this herb
Traditional uses from our symptom map. Not medical advice.
Where to buy
Napiers (UK)Chinese Angelica Tincture (Angelica sinensis) · £10.00 · 1:3, 45%Check the label and the seller. A link is not a recommendation.
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Educational only, not medical advice. See the disclaimer.