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Dong quai

Supplement botanical women's health
Aka: Angelica sinensis, danggui, dang gui
Brands seen in Singapore: NOW Foods, Swanson Vitamins, Nature's Way, Nature's Answer, Solaray
Not medical advice. Check with your doctor or pharmacist before you start, stop or change the timing of anything you take.
How to use
What it’s for
Menopausal symptoms — alone it did not beat placebo
Pros & cons
Pros
  • Long traditional use in chinese women's formulas
  • A chamomile blend cut hot flushes 73% vs 38%
Cons
  • Alone, no better than placebo for hot flushes
  • Bleeding risk rises with warfarin or antiplatelets
  • Photosensitivity; not advised while breastfeeding
Sources
  1. Complementary and Alternative Medicine for Menopause (Johnson et al., J Evid Based Integr Med 2019) — Dong Quai section · read 2026-08-27
    what it says
    “Dong quai was not superior to placebo for the reduction of menopausal symptoms … important safety concerns exist regarding A sinensis, including interactions with other medications and herbs, photosensitization, anticoagulation, and possible carcinogenicity”
  2. CAM for Menopause — A. sinensis plus chamomile (Climex) trial (Johnson et al. 2019) · read 2026-08-27
    what it says
    “the herbal preparation reported a 73% decreased in hot flushes and a 69% decrease in night sweats, compared with 38% and 29% improvement in the placebo group, respectively”
  3. LactMed (NIH Drugs and Lactation Database) — Dong Quai · read 2026-08-27
    what it says
    “it may increase the risk of bleeding in patients taking warfarin and antiplatelet drugs and cause photosensitivity reactions. Dong quai is best avoided during breast feeding.”
  4. HSA — Guidelines on Prohibited and Restricted Ingredients in Health Supplements and Traditional Medicines (Oct 2025, GL-CHPB-1-012) · read 2026-08-27
    what it says
    “The objective of this guideline is to highlight the substances of concern when used in HS and TM and is not meant to be an exhaustive list.”
  5. HSA — Health Supplements Guidelines (Jan 2026, GL-CHPB-3-001 Rev. 020), Tables 4–5 · read 2026-08-27
    what it says
    “HS for use by the general adult population should not contain vitamins and minerals exceeding the stipulated limits stated in Tables 4 and 5.”
  6. iHerb Singapore — category listing (default order) · read 2026-08-27
    what it says
    “Dong Quai 1 - 17 of 17 results”
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Updated 2026-08-29. Every line above traces to a numbered source. Kozen-X is not a medical device and does not give medical advice. It lists what published sources have written down — nothing more. A pair not listed is unrecorded, not cleared. Before you start, stop or re-time anything, talk to your doctor or pharmacist.