Pueraria Mirifica Extract is a concentrated botanical extract derived from the tuberous root of Pueraria mirifica, a plant native to Thailand and Myanmar and one of the most potent phytoestrogenic botanicals known. Standardised to contain more than 40% flavonoids (UV), this extract is rich in miroestrol, deoxymiroestrol, daidzein, genistein, and other phytoestrogens — bioactive compounds with oestrogen-like activity significantly stronger than those found in soy or red clover.
Pueraria Mirifica is the premier women’s phytoestrogenic botanical in Southeast Asia, with a strong tradition of use in Thai herbal medicine for menopausal relief, breast health, and female rejuvenation.
Applications:
- Women’s Health (menopausal symptom relief, hot flush management, hormonal balance supplements)
- Beauty Supplements (breast firmness, skin hydration, and anti-ageing beauty formulations)
- Bone Health (phytoestrogen support for post-menopausal bone density)
- Traditional Herbal Medicine (Thai Kwao Krua Khao formulations)
Key Features & Benefits:
- >40% flavonoids (UV) – potent standardised phytoestrogen-rich extract
- Most potent naturally occurring phytoestrogen source known
- Strong Thai herbal medicine heritage and growing global women’s health market
- Halal-certified & food-grade quality
- Suitable for capsule, tablet, and cream formulations
Not the same plant as kudzu
Pueraria mirifica (white kwao krua) is a Thai tuberous root. Its distinctive compounds are miroestrol and deoxymiroestrol, which are strongly oestrogenic, alongside isoflavones. Kudzu, Pueraria lobata, contains mainly puerarin and daidzin and is a different ingredient: see Pueraria Lobata Extract. Red kwao krua is a third plant, Butea superba (Butea Superba Extract). Ask for identity testing that separates these.
What “>40% flavonoids (UV)” measures
A UV total-flavonoid figure is a broad colour-reaction assay. It does not identify individual compounds, and it does not measure miroestrol or deoxymiroestrol, which occur in very small amounts but drive most of the oestrogenic activity. Content varies with plant origin and harvest. For consistency, ask for an HPLC profile of the isoflavones and, where available, of miroestrol and deoxymiroestrol.
Regulatory and safety checks
Because it acts like oestrogen, P. mirifica is regulated more tightly than most botanicals, and the rules differ between markets. Confirm its status with NPRA for your product category before formulating, and plan label warnings for pregnancy, breast-feeding and oestrogen-sensitive conditions.
Halal certification
This ingredient is listed as “Pueraria Mirifica Extract” on FC Materials’ Halal certificate (Sijil Pengesahan Halal, MS 1500:2019), issued through the Penang Islamic Religious Council (MAINPP) and the Department of Islamic Development Malaysia (JAKIM). Reference JAKIM.700-2/3/1 105-07/2022, valid until 15 October 2028. Ask us for a copy.
What the research says
- A 2018 systematic review of 8 studies (309 menopausal women) concluded that benefits for menopausal symptoms remain inconclusive. [1]
- The trials had high risk of bias and did not define the material used. Other adverse events were similar to controls, but serum C-reactive protein doubled. [1]
- After many reports of irregular vaginal bleeding and menstrual disorders, Japan listed P. mirifica as a “designated ingredient” in health foods. [2]
- In a Japanese survey, almost half of users of foods containing P. mirifica reported adverse events. These are self-reports, not controlled trials. [2]
These summaries describe published research on the ingredient. They are not claims for any finished product; claims on finished products must meet the rules of the market where they are sold.
References
- Kongkaew C, et al. Efficacy and safety of Pueraria candollei var. mirifica (Airy Shaw & Suvat.) Niyomdham for menopausal women: a systematic review of clinical trials and the way forward. J Ethnopharmacol. 2018;216:162-74. doi:10.1016/j.jep.2018.01.028
- Chiba T, et al. Recognition and prevalence of “designated ingredient, etc.” in health foods [article in Japanese]. Shokuhin Eiseigaku Zasshi. 2022;63(1):20-6. doi:10.3358/shokueishi.63.20
What to ask for on the certificate of analysis
- Botanical name and plant part (Pueraria mirifica tuberous root)
- Identity test separating P. mirifica from P. lobata and Butea superba (HPLC fingerprint or DNA)
- Total flavonoids with method, plus an HPLC isoflavone profile
- Miroestrol and deoxymiroestrol, where the supplier can measure them
- Extraction solvent and carrier with its percentage
- Loss on drying, heavy metals, pesticide residues and microbiology
- Batch number, manufacture and retest dates
