Ingredient safety
Dong Quai Side Effects: Warfarin, Sun and Pregnancy
Dong quai side effects that matter most involve bleeding. A literature review lists case reports of severe bleeding when Angelica sinensis, the dong quai plant, was taken with warfarin. Quietum Plus lists dong quai and prints no amount. If you take a blood thinner, or are pregnant, ask your doctor or pharmacist first.
Written by the Quietum Plus label deskUpdated · 4 min read
Does dong quai interact with warfarin?
Yes, dong quai has been linked to bleeding in people who take warfarin. A review of herb and warfarin interactions lists case reports of severe bleeding with Angelica sinensis, ginger and ginkgo (Milic et al., Warfarin-Herb Interactions).
Warfarin has a narrow safe range, so small changes matter. The review also notes that herb effects are not routinely checked in clinics. These are case reports, not trials, so they show a signal rather than a rate.
Ginger is also on the Quietum Plus list, which adds a second reason to ask. Keep taking prescribed medicine, and let your prescriber decide.
| Sign | What to do |
|---|---|
| Unusual bruising or nosebleeds | Call your prescriber |
| Black or bloody stools, vomiting blood | Seek urgent care |
| Severe headache after a fall | Seek emergency care |
What about dong quai, sun and pregnancy?
Herbal guides often list sun sensitivity and pregnancy as cautions for dong quai. The sources we cite for this post do not cover either, so treat both as questions, not facts.
On pregnancy, many supplements have not been tested in pregnant women, nursing mothers or children (NCCIH, Using Dietary Supplements Wisely). The Quietum Plus page says to consult a physician if you are pregnant, nursing or taking medication.
- Ask a doctor before use if you are pregnant or may be.
- Ask about sun care if you burn easily or use medicines that raise sun sensitivity.
- Tell your surgeon about every supplement before an operation.
We make no claim about doses, since none is printed for the capsule.
Is dong quai a good ear tonic?
No evidence shows that dong quai helps the ear. The sales page calls it a "Superior ear tonic", but we found no study of dong quai for tinnitus or hearing.
The NIDCD says supplements advertised for tinnitus have not been proven to work (NIDCD, Tinnitus). Ringing needs its own check. Sudden hearing loss in one ear needs same-day care. Ringing that beats with your pulse, follows a head injury, or comes with dizziness, weakness or a drooping face needs a doctor, and face weakness is an emergency.
Book a hearing exam with an audiologist or ENT.
Quietum Plus: from $49 a bottle60 capsules a bottle · 2, 3 or 6 bottles · 60-day money-back guarantee
See packsHow does Quietum Plus list dong quai?
Dong quai has its own sales-page tile. Quietum Plus is a capsule supplement, 60 per bottle, and the images we reviewed print no amounts, serving or warnings. The bottle front lists Clear Mind, Memory & Focus and Mood Support, not hearing.
The missing amount means no study result can be applied to it. Our dong quai page and supplements and medicines list what to bring to a visit.
Packs cost $79, $69 or $49 a bottle, and a 60-day money-back guarantee covers each. Follow your bottle's label.
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Prices from the sales page, October 19, 2026 (Quietum Plus order section). Two bottles are $158 plus $9.99 shipping. Every pack carries the 60-day money-back guarantee. Check your medicines first.
01FAQ
Dong quai questions
Can I take dong quai with a blood thinner?
Ask your prescriber first. Case reports describe severe bleeding when dong quai was taken with warfarin. Do not stop or change prescribed medicine on your own. Bring the supplement bottle so your doctor or pharmacist can read the full ingredient list.
Is dong quai the same as Angelica sinensis?
Yes. Dong quai is the common name for Angelica sinensis, a root used in traditional Chinese medicine. Some labels use the Latin name only, so check the ingredient list for both names when you review a supplement with your pharmacist.
Does dong quai have estrogen-like effects?
Our cited sources do not settle this, so we make no claim. If you have a hormone-sensitive condition, or are pregnant, ask your doctor before using any dong quai product. They know your history and can weigh the risk for you.
02Who wrote this
Written and reviewed by
Pages built from the bottle images, the sales page and linked NIH, NIDCD, FDA, FTC and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is run by Goquietumplus, a USA Authorized Quietum Plus Retailer, not by the manufacturer. We earn money when you buy through our order links.
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