Botanical Overview
Epilobium parviflorum, commonly known as Small-flowered Willowherb or Hairy Willowherb, belongs to the Onagraceae family. Native to Europe, Western Asia, and Northwest Africa, this species primarily uses its aerial parts, leaves, and flowers in herbal applications.
Energetics
This herb is considered energetically neutral in temperature with a drying moisture quality. Its taste profile is predominantly astringent and bitter, and it acts in a relaxing manner on the body.
Primary Actions
- Anti-inflammatory
- Astringent
- Diuretic
- Antioxidant
- Antibacterial
Indications
Western
- Benign prostatic hyperplasia symptoms
- Urinary tract inflammation
- Mild skin irritation
- Bladder inflammation
- Urinary discomfort
Syndromes
- Benign prostatic hyperplasia
- Chronic prostatitis
- Cystitis
TCM
Not established.
Ayurveda
Not established.
Unani
Not established.
Constituents & Mechanisms
The key phytochemical classes include flavonoids, tannins, triterpenoids, phenolic acids, ellagitannins, and the notable compound oenothein B, which contribute to its anti-inflammatory, antioxidant, and astringent effects.
Dosage & Preparations
- Aerial parts infusion: 2–4 grams of dried herb infused in 150–200 mL water, 1–2 times daily
- Tincture 1:5 (40% ethanol): 2–5 mL, 1–3 times daily
Safety & Contraindications
Usually well tolerated; avoid use during pregnancy and lactation due to insufficient safety data. Potential interaction with diuretics suggests monitoring kidney function when combined.
Astrological Correspondences
No reliable data available for planetary or elemental rulers.
Selected References
- European Medicines Agency – Herbal Monograph: Epilobii herba – Epilobium parviflorum and Epilobium angustifolium (2011)
- Pfaf Plant Database: Epilobium parviflorum
- Chapple et al. (2018) Phytochemistry and Pharmacology of Epilobium Species, PubMed Central