What is Spiny Rest Harrow Root Extract?

Spiny Rest Harrow Root Extract is a herbal extract made from the roots of Ononis spinosa. It is traditionally used in Europe to support urinary tract health.

What are the main benefits of Spiny Rest Harrow Root Extract?

It is commonly used for urinary tract support due to its mild diuretic action. It may also provide anti-inflammatory and antioxidant effects.

How does Spiny Rest Harrow Root Extract support urinary tract health?

It may help promote urine flow, which can support bladder comfort and urinary tract function. This diuretic effect is also why it is sometimes used as part of kidney stone prevention support.

What is a typical dosage for Spiny Rest Harrow Root Extract?

A common supplemental range is 300–600 mg per day. Follow the product label and consult a clinician if you have kidney disease or take diuretics.

Who should avoid Spiny Rest Harrow Root Extract?

People who are pregnant or breastfeeding, have significant kidney or heart conditions, or use prescription diuretics should seek medical advice before use. Stop use and get help if you develop allergic reactions or worsening urinary symptoms.

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Spiny Rest Harrow
Root Extract

Limited research available·3/10

A higher score indicates better study conditions, but not necessarily effectiveness.

Traditional herbal extract known for urinary tract support, mild diuretic, anti-inflammatory, and antioxidant effects.

Anti-inflammatory Antioxidant Kidney Health

dose range

300–600 mg

Divided into 2 doses daily

Consumption

Can be taken as a standardized extract (capsule or tablet), or as a tea prepared from dried root (1–2 g/day). Tea should be steeped in hot water for best extraction.

Not fat-soluble.

Best time

Take with water. Take during the day to avoid nocturnal urination.

Description

Spiny Rest Harrow Root Extract is a herbal supplement derived from the roots of Ononis spinosa, traditionally used in Europe to support urinary tract health. It contains bioactive compounds like isoflavonoids and triterpenes, contributing to its main effects as a diuretic and anti-inflammatory agent.

benefits

Main effects with level of evidence

Limited

Note on evidence

Most clinical evidence derives from animal models, in vitro studies, and traditional use, with very limited robust human trials.

Supports Urinary Tract Health

Limited

May promote urine flow and help alleviate mild urinary tract issues, such as supporting bladder comfort and kidney stone prevention, through mild diuretic action.

Particularly relevant for: Adults seeking urinary tract support

2 · PubMed 5 · EMA Herbal Monograph (Ononis spinosa L., radix)4 · WebMD

Anti-Inflammatory Effects

Limited

May reduce inflammation and discomfort related to conditions like mild rheumatism or gout due to inhibition of pro-inflammatory cytokines.

Particularly relevant for: Adults with mild inflammatory discomfort

3 · PubMed 6 · Examine.com

Antioxidant Activity

Limited

Provides antioxidant effects by scavenging free radicals, with potential protection against oxidative stress.

Particularly relevant for: Adults seeking antioxidant support

1 · PubMed 6 · Examine.com

Safety & Information

Important safety information & known risks

For educational purposes only • not medical advice

Generally well-tolerated in moderate doses, but caution advised in specific populations.

warning notices

May cause mild gastrointestinal upset in some people.
Increased urination is common, which may lead to dehydration if fluid intake is insufficient.
Not recommended for use during pregnancy, lactation, or in those with kidney impairment.
Avoid use during pregnancy or breastfeeding due to lack of safety data.
Do not use if you have kidney disease or impaired kidney function due to risk of adverse effects from increased diuresis.
Avoid concurrent use with pharmaceutical diuretics or lithium unless supervised by a healthcare provider.
Use caution and monitor for excessive urination or electrolyte imbalance if combining with other diuretic herbs or medications.

Known interactions with medications

Diuretics
Lithium

Contraindications / special precautions

Pregnancy
Breastfeeding
Kidney disease

interactions

Important interactions between active ingredient ↔ supplement / medication / food

May potentiate effects of diuretics and lithium, with possible risk of excessive urination or altered lithium excretion.

May amplify diuretic effects when combined with other diuretics.

drug · diuretics

CautionLimited

Why

Increased urine output from both agents may result in dehydration or altered electrolyte balance.

recommendation

Use only under medical supervision if on diuretics; monitor fluid and electrolyte status.

4 · WebMD 5 · EMA Herbal Monograph (Ononis spinosa L., radix)

May alter lithium excretion and blood levels.

nutrient · Lithiumorotate

CautionLimitedLithiumorotate

Why

Diuretic effects can impact renal elimination of lithium and risk toxicity.

recommendation

Do not combine with lithium unless advised and monitored by a specialist.

4 · WebMD 6 · Examine.com

mechanisms of action

Brief explanations of how it works

Diuretic action

Promotes increased urine production by modulating renal function and urinary pH, contributing to traditional uses in urinary tract health.

2 · PubMed 5 · EMA Herbal Monograph (Ononis spinosa L., radix)

Anti-inflammatory effects

Inhibits pro-inflammatory cytokines and possibly other mediators of inflammation in vitro.

3 · PubMed 6 · Examine.com

Antioxidant activity

Scavenges free radicals and protects against oxidative cellular damage, attributed to its phenolic compounds.

1 · PubMed

Sources & References

Primary literature and reviews on which these statements are based

6 sources

PubMed

Describes antioxidant effects and phytochemistry of Ononis spinosa root extract.

PubMed

Evaluates diuretic, urinary health, and anti-calculi activities in animal models.

PubMed

Highlights anti-inflammatory activity through cytokine inhibition in vitro.

WebMD

Provides overview of traditional usage, safety, and possible interactions.

EMA Herbal Monograph (Ononis spinosa L., radix)

Regulatory herbal assessment and clinical overview.

Examine.com

Systematic review of evidence on effects and safety.

Laatst bijgewerkt: 31 januari 2026

This information is for educational purposes only and does not replace medical advice.