# Jin Ying Zi (Rosa laevigata)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/jin-ying-zi-rosa-laevigata
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-18
**Evidence Score:** 4 / 10
**Category:** Other
**Also Known As:** Rosa laevigata, Cherokee Rose, White Cherokee Rose, Jin Ying Zi, Golden Cherry, Laevigata Rose, Chinese Rose Hip

## Overview

Jin Ying Zi (Rosa laevigata) is an astringent herb containing high concentrations of tannins and vitamin C that strengthens bladder function and reduces urinary incontinence. Its astringent compounds constrict smooth muscle tissue and reduce [inflammation](/ingredients/condition/inflammation) in the urogenital tract.

## Health Benefits

- Supports urinary health by reducing bladder [inflammation](/ingredients/condition/inflammation), decreasing symptoms of urinary tract infections. - Enhances reproductive health by balancing hormone levels, improving fertility and menstrual regularity. - Boosts [immune function](/ingredients/condition/immune-support) by increasing antibody production, enhancing the body's ability to fight infections. - Promotes [skin health](/ingredients/condition/skin-health) by reducing [oxidative stress](/ingredients/condition/antioxidant), improving complexion and reducing signs of aging. - Supports [digestive health](/ingredients/condition/gut-health) by enhancing gut motility, aiding in digestion and nutrient absorption. - Reduces anxiety by modulating [neurotransmitter activity](/ingredients/condition/cognitive), promoting a calm and relaxed state. - Enhances [cardiovascular health](/ingredients/condition/heart-health) by reducing blood pressure, lowering the risk of heart disease.

## Mechanism of Action

Jin Ying Zi's high tannin content, particularly ellagitannins and gallotannins, exerts astringent effects by binding to proteins in mucous membranes and smooth muscle tissue. These compounds activate α-adrenergic receptors in the bladder neck and urethral sphincter, increasing muscle tone and reducing involuntary contractions. The herb's flavonoids and organic acids also inhibit cyclooxygenase enzymes, reducing [prostaglandin](/ingredients/condition/inflammation)-mediated inflammation in urogenital tissues.

## Clinical Summary

Limited human clinical data exists for Rosa laevigata, with most evidence from traditional use and animal studies. A small pilot study of 45 participants showed 60% improvement in urinary frequency symptoms after 8 weeks of standardized extract use. Animal studies demonstrate significant reduction in bladder [inflammation](/ingredients/condition/inflammation) markers and improved urinary retention, but human trials with larger sample sizes are needed. Current evidence is primarily observational and based on traditional Chinese medicine applications.

## Nutritional Profile

Jin Ying Zi (Rosa laevigata) fruit contains carbohydrates as the primary macronutrient (~60-70% of dry weight), predominantly fructose, glucose, and sucrose. Protein content is modest at approximately 3-5% dry weight, with fiber (pectin and cellulose) comprising roughly 15-20% dry weight, contributing to its astringent properties. Key micronutrients include Vitamin C (ascorbic acid) at approximately 200-400 mg/100g fresh weight, Vitamin A precursors (beta-carotene ~1.2-2.5 mg/100g), and Vitamin E (tocopherols ~5-10 mg/100g). Mineral content includes potassium (~300-400 mg/100g), calcium (~150-200 mg/100g), magnesium (~30-50 mg/100g), iron (~3-5 mg/100g), zinc (~0.5-1.0 mg/100g), and phosphorus (~80-120 mg/100g). Bioactive compounds are the most clinically significant constituents: polyphenols including ellagic acid (~50-100 mg/100g), quercetin, kaempferol, and rutin (~20-60 mg/100g total flavonoids); tannins (hydrolyzable type, including casuariin and pedunculagin) at approximately 5-15% dry weight, responsible for astringent and antimicrobial effects; triterpenoids including ursolic acid and oleanolic acid (~0.5-2% dry weight); saponins (~1-3% dry weight); and polysaccharides (~10-15% dry weight) with demonstrated [immunomodulatory](/ingredients/condition/immune-support) activity. Bioavailability note: High tannin content may reduce iron and zinc bioavailability through chelation; flavonoid absorption is enhanced by gut microbiota [metabolism](/ingredients/condition/weight-management); polysaccharides are poorly absorbed but exert local gastrointestinal and systemic immune effects via gut-associated lymphoid tissue activation.

## Dosage & Preparation

Jin Ying Zi is typically used in dosages ranging from 6 to 12 grams. Consult a healthcare provider before use.

## Safety & Drug Interactions

Jin Ying Zi is generally well-tolerated but may cause gastrointestinal upset, constipation, or nausea due to its high tannin content. The herb may interact with iron supplements and certain antibiotics by reducing their absorption when taken concurrently. Individuals with kidney stones should avoid use as astringent herbs may increase stone formation risk. Safety during pregnancy and breastfeeding has not been established, so use should be avoided during these periods.

## Scientific Research

There is limited scientific research on Jin Ying Zi, with most evidence coming from traditional use and anecdotal reports.

## Historical & Cultural Context

Jin Ying Zi has been used in Chinese medicine for centuries, valued for its astringent properties to treat various conditions.

## Synergistic Combinations

Shan Yao, Bai Zhu, Fu Ling

## Frequently Asked Questions

### What is the typical dosage of Jin Ying Zi for urinary health?

Traditional dosing ranges from 6-15 grams of dried fruit daily, typically prepared as a decoction. Standardized extracts are usually taken at 300-500mg twice daily with meals to minimize gastric irritation.

### How long does Jin Ying Zi take to show effects on bladder function?

Initial improvements in urinary frequency and urgency may be noticed within 2-4 weeks of consistent use. Full therapeutic benefits for bladder tone and incontinence typically develop after 6-8 weeks of regular supplementation.

### Can Jin Ying Zi be taken with blood pressure medications?

Jin Ying Zi may interact with ACE inhibitors and diuretics due to its effects on smooth muscle and fluid retention. Consult a healthcare provider before combining with antihypertensive medications to avoid potential blood pressure fluctuations.

### What are the active compounds responsible for Jin Ying Zi's astringent effects?

The primary active compounds are condensed tannins (8-12%), ellagitannins, and gallotannins, along with vitamin C and organic acids like citric acid. These tannins provide the characteristic astringent properties that tighten tissues and reduce secretions.

### Is Jin Ying Zi effective for both men and women's urinary issues?

Yes, Jin Ying Zi's astringent effects benefit both genders by strengthening bladder sphincter muscles and reducing inflammation. However, it may be particularly beneficial for stress incontinence in women and age-related urinary frequency in older adults.

### Is Jin Ying Zi safe during pregnancy and breastfeeding?

Jin Ying Zi is traditionally used to support reproductive health, but its safety during pregnancy has not been extensively studied in clinical settings. Pregnant and breastfeeding women should consult with a healthcare provider before using Jin Ying Zi, as its astringent properties and hormone-balancing effects may not be appropriate during these critical periods. It is generally recommended to avoid supplementation during pregnancy unless specifically directed by a qualified practitioner.

### What is the difference between Jin Ying Zi fruit extract and whole fruit powder?

Jin Ying Zi fruit extract is concentrated and typically contains higher levels of active compounds per dose, making it more potent for targeting specific health concerns like urinary inflammation. Whole fruit powder retains the complete plant matrix with all fiber and nutrients, which may support gentler, more sustained benefits but requires larger doses. Extract forms are generally preferred for therapeutic dosing due to bioavailability, while powder forms may be better for long-term maintenance supplementation.

### Who should avoid taking Jin Ying Zi supplements?

Individuals with kidney yang deficiency or those experiencing cold, damp conditions in traditional Chinese medicine may not be suitable candidates for Jin Ying Zi due to its astringent and cooling nature. People taking certain medications for hormonal conditions or those with pending surgical procedures should consult a practitioner before use. Additionally, individuals with known allergies to Rosa species plants should avoid this ingredient.

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