Supplement analysis backed by scientific evidence · PT

← All supplements
Limited evidenceGeneral health

Goldenrod

A European herb used to flush the urinary tract, approved for that traditional use by German regulators. The supporting data are pharmacological and in vitro; controlled trials of goldenrod alone are lacking.

Evidence last reviewed: August 2026

What the science says

  • Urinary flushing Limited evidence

    A review of Solidago virgaurea's ethnomedicinal uses, phytochemistry and pharmacology documents diuretic, anti-inflammatory and spasmolytic activity in animal and laboratory models, which underpins its traditional monograph status for irrigation therapy. The clinical trials that exist test multi-herb products, not goldenrod on its own.

  • Activity against urinary bacteria in vitro Limited evidence

    Laboratory work shows that goldenrod extract contributes antibacterial and anti-adhesive activity against uropathogenic E. coli within a combination formulation. This is cell-culture evidence and does not establish that it prevents or treats urinary tract infections in people.

Dosage & safety

Studied doseTraditional use is 6–12 g/day of dried herb as an infusion, or the equivalent extract, taken with a high fluid intake. Commercial capsules usually supply 300–500 mg one to three times daily.
SafetyGenerally well tolerated. As an Asteraceae plant it can cause allergic reactions in people sensitive to ragweed, chrysanthemum or daisies. Irrigation therapy is contraindicated if you have oedema from heart or kidney failure, or impaired kidney function. A urinary tract infection with fever, flank pain or blood needs antibiotics, not a flushing herb.

Scientific references

Where to buy

View on iHerb

Referral link — this site may earn a commission on purchases.

Related in General health