Educational information, not medical advice — ask your doctor or midwife.
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Fu Pen Zi is the dried, unripe fruit of Rubus chingii, a Chinese raspberry. In Chinese medicine it is used for frequent urination, bedwetting and sexual weakness. It is a single herb, not a mixed product.
It is a long-standing staple of Chinese herbal practice. It is usually given inside a formula with other herbs, rather than on its own.
Traditional standing and proof are two different things. A herb can be trusted for centuries and still lack trials. Fu Pen Zi is one of those herbs: human trial evidence is very thin, so we cannot say whether it works.
No one has shown how Fu Pen Zi works in the body in people.
In Chinese medicine it is described as warm and sweet-sour. It is said to support the kidney system and to hold in fluids and "essence". Those are ideas from that tradition, not measured effects.
Laboratory work points to antioxidant activity (it mops up reactive molecules in a test tube). In animal studies, extracts have shown mild hormone-like and bone-sparing effects. Whether any of this happens in a person who drinks the tea is not known.
Fu Pen Zi is sold in several forms.
- Dried whole fruit, simmered in water as a decoction (a strong tea) - Granules or powdered extract, stirred into hot water - Pills and tablets, often inside a classic formula - Tinctures (alcohol extracts), less common
It appears in well-known formulas such as Wu Zi Yan Zong Wan. In those products it is one herb among several.
Fu Pen Zi has been named in Chinese herbal texts for well over a thousand years. Early records appear in materia medica works from around the 5th century CE.
It kept a steady place in later Ming and Qing writing. Its main role has always been as a kidney tonic and an astringent for urine and semen.
See a doctor if you pass blood in your urine, or get a fever with back pain. Get help for pain or burning when you pass urine.
See a doctor if you cannot pass urine properly, or if the problem gets worse.
Get urgent care for a rash with swelling of the face or trouble breathing. Book a review if nothing has changed after about eight weeks.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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