What is the typical dosage of Shan Zhu Yu?

Traditional dosages range from 6-12 grams daily of the dried fruit, often taken as decoction or powder. Modern extracts typically recommend 200-400mg daily, standardized to contain 2-5% cornuside content.

How long does Shan Zhu Yu take to show effects?

Initial benefits for urinary frequency may appear within 1-2 weeks, while kidney function improvements typically require 4-8 weeks of consistent use. Reproductive health benefits may take 2-3 months to manifest fully.

Can Shan Zhu Yu be taken with blood pressure medications?

Caution is advised as Shan Zhu Yu may enhance the effects of ACE inhibitors and diuretics through its action on the renin-angiotensin system. Monitor blood pressure closely and consult healthcare providers before combining.

What are the active compounds in Shan Zhu Yu?

The primary bioactive compounds include cornuside (0.5-2%), loganin (0.3-1.5%), and morroniside (0.2-0.8%). These iridoid glycosides are responsible for the herb's kidney-protective and antioxidant properties.

Is Shan Zhu Yu safe for diabetics?

Shan Zhu Yu may help regulate blood sugar levels, but diabetics should monitor glucose carefully as it can enhance insulin sensitivity. The herb may require adjustment of antidiabetic medication dosages under medical supervision.

Who benefits most from taking Shan Zhu Yu supplements?

Shan Zhu Yu is particularly beneficial for individuals seeking to support kidney and reproductive health, those with compromised immune function, and people managing cardiovascular concerns naturally. It is especially valued in traditional Chinese medicine for older adults experiencing age-related decline in kidney essence (jing) and for women seeking hormonal balance and fertility support.

What is the difference between Shan Zhu Yu extract and dried fruit forms?

Shan Zhu Yu extract offers higher concentration of active compounds and faster absorption, making it more potent per dose, while dried fruit provides a more economical option with gentler, sustained effects over time. Extracts are typically standardized for bioactive components like iridoids, whereas whole dried fruit retains the complete phytochemical profile including fiber and polyphenols.

What does research show about Shan Zhu Yu's effectiveness for kidney health?

Clinical studies demonstrate that Shan Zhu Yu enhances renal function by improving glomerular filtration and promoting efficient toxin elimination through the kidneys. Research supports its traditional use for supporting kidney vitality, with evidence suggesting it may help maintain healthy kidney function markers in both preventive and therapeutic applications.

Shan Zhu Yu (Cornus officinalis)

Shan Zhu Yu (Cornus officinalis) is an astringent herb containing cornuside and loganin that supports kidney yang energy and reproductive function. The herb works by modulating the hypothalamic-pituitary-adrenal axis and enhancing antioxidant enzyme activity in renal tissues.

Category: Other Evidence: 4/10 Tier: Preliminary

Shan Zhu Yu (Cornus officinalis) — Hermetica Encyclopedia

Origin & History

Shan Zhu Yu, also known as Cornus officinalis, is a fruit-bearing tree native to China. Its fruits are harvested and dried for use in traditional medicine.

Historical & Cultural Context

Shan Zhu Yu has been used in traditional Chinese medicine for centuries to stabilize and bind, helping to address issues like excessive sweating and frequent urination.

Health Benefits

- Supports kidney health by enhancing renal function, promoting toxin elimination. - Aids in reproductive health by balancing hormones, improving fertility. - Boosts immune function by increasing lymphocyte activity, crucial for disease prevention. - Promotes cardiovascular health by reducing blood pressure, with studies showing a 12% decrease. - Enhances liver health by supporting detoxification processes, reducing toxin load. - Improves skin health by reducing oxidative stress, promoting a youthful appearance. - Supports mental clarity by enhancing neurotransmitter function, improving focus.

How It Works

Shan Zhu Yu's primary compounds cornuside and loganin enhance superoxide dismutase and catalase activity, protecting kidney cells from oxidative damage. The herb modulates the renin-angiotensin system and increases expression of antioxidant genes through Nrf2 pathway activation. Additionally, it influences steroid hormone synthesis by supporting 17β-hydroxysteroid dehydrogenase enzyme activity.

Scientific Research

Research on Shan Zhu Yu includes studies on its antioxidant and anti-inflammatory properties. Some clinical trials support its traditional uses, but more research is needed.

Clinical Summary

Human clinical studies on Shan Zhu Yu are limited, with most evidence derived from animal models and in vitro research. Rat studies (n=40-60) demonstrate 25-40% improvement in kidney function markers and reduced proteinuria after 4-8 weeks of treatment. Cell culture studies show significant increases in antioxidant enzyme activity at concentrations of 10-100 μg/mL. More human clinical trials are needed to establish therapeutic efficacy and optimal dosing protocols.

Nutritional Profile

Shan Zhu Yu (Cornus officinalis) fruit is primarily valued for its bioactive compounds rather than macronutrient content. Key bioactive compounds include: **Iridoid glycosides** — notably loganin (approximately 1.5–3.5% dry weight) and morroniside (1.0–2.5% dry weight), which are considered primary active constituents responsible for hepatoprotective and renoprotective effects. **Organic acids** — ursolic acid (0.3–0.8%) and gallic acid (0.1–0.4%), contributing antioxidant and anti-inflammatory activity. **Tannins** — including cornusin A and tellimagrandin, comprising approximately 5–15% of dry weight, with notable astringent and antioxidant properties. **Flavonoids** — such as quercetin and kaempferol glycosides (approximately 0.2–0.6%), supporting cardiovascular and anti-inflammatory benefits. **Polysaccharides** — (approximately 5–10% dry weight), contributing to immunomodulatory effects by enhancing lymphocyte proliferation. **Triterpenoids** — including oleanolic acid and ursolic acid, with hepatoprotective and anti-hyperglycemic activity. **Minerals** — contains calcium (~200–350 mg/100g dry weight), potassium (~400–600 mg/100g), magnesium (~80–150 mg/100g), zinc (~2–5 mg/100g), and iron (~3–8 mg/100g). **Vitamins** — modest amounts of vitamin C (~15–30 mg/100g fresh fruit) and small quantities of B-vitamins. **Fiber** — approximately 8–12% of dry weight. **Protein** — low, approximately 3–5% of dry weight. **Anthocyanins** — present in the red fruit flesh, including cyanidin-3-O-glucoside (approximately 0.05–0.2%), contributing antioxidant capacity. **Bioavailability notes** — Iridoid glycosides (loganin, morroniside) demonstrate moderate oral bioavailability (~20–35%) and are metabolized by gut microbiota. Tannins may reduce bioavailability of co-consumed iron and proteins. Traditional decoction preparation enhances extraction of water-soluble glycosides and polysaccharides. Organic acids such as ursolic acid have relatively low oral bioavailability (~8–15%) but can be enhanced through lipid-based formulations.

Preparation & Dosage

The typical dosage of Shan Zhu Yu is 6-12 grams per day. Consult a healthcare provider before use.

Synergy & Pairings

Wu Wei Zi, Fu Ling, Bai Zhu, Dang Shen

Safety & Interactions

Shan Zhu Yu is generally well-tolerated but may cause mild gastrointestinal upset in sensitive individuals. The herb may interact with antidiabetic medications due to its blood sugar-lowering effects, requiring monitoring. It should be avoided during acute infections or inflammatory conditions as its astringent properties may trap pathogens. Pregnant and nursing women should avoid use due to insufficient safety data and potential hormonal effects.