Journal

Bay-leaf willowherb

July 2, 2026 · Omnia Sana
Epilobium parviflorum
Family: Onagraceae  ·  Parts used: Aerial parts (herb)  ·  Also known as: Small-flowered willowherb, Hoary willowherb

Key actions

Anti-inflammatoryAntimicrobialAntioxidant

Traditional & clinical uses, by strength of evidence

  • Prostate supportModerate
  • Urinary supportModerate
  • Urinary tract infection (UTI)Moderate
  • Arthritis / joint painTraditional
  • Infection (general)Traditional
  • Inflammation (general)Traditional
  • Skin irritationTraditional
  • WoundsTraditional

Selected studies & references

ReviewTherapeutic potential of polyphenols from Epilobium angustifolium (fireweed) (2016)
RctA phase II randomised double-blind placebo-controlled clinical trial investigating the efficacy and safety of ProstateEZE Max: a herbal medicine preparation (containing Epilobium parviflorum) for the management of symptoms of benign prostatic hypertrophy (2013)
PreclinicalInvestigation of Epilobium hirsutum L. Optimized Extract's Anti-Inflammatory and Antitumor Potential (2024)
PreclinicalAntioxidant and anti-inflammatory effects of Epilobium parviflorum, Melilotus officinalis and Cardiospermum halicacabum plant extracts in macrophage and microglial cells (2021)
PreclinicalOenothein B, a cyclic dimeric ellagitannin isolated from Epilobium angustifolium, enhances IFN-gamma production by lymphocytes (2012)
PreclinicalOenothein B's contribution to the anti-inflammatory and antioxidant activity of Epilobium sp. (2011)
PreclinicalImmunomodulatory activity of oenothein B isolated from Epilobium angustifolium (2009)
PreclinicalPolyphenol composition and antioxidant capacity of Epilobium species (2009)

All 14 studies in the Knowledge Finder →

Educational use only. This profile summarises traditional and scientific sources for reference. It is not medical advice and not a substitute for a qualified practitioner. Some plants carry safety cautions and drug interactions — always check before use.

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