Botanical Overview
Nasturtium officinale, commonly known as Watercress, is a fast-growing aquatic perennial plant of the Brassicaceae family. It is native to Europe, Asia, and North America. The parts used medicinally are primarily the leaves, stems, and the whole plant.
Energetics
Watercress is traditionally considered cooling and moistening in nature, with a tonifying effect on the qi. Its taste is predominantly pungent and bitter. Directionality attributes are not well documented.
Primary Actions
- Antioxidant
- Antimicrobial
- Diuretic
- Anti-inflammatory
- Expectorant
- Detoxifying
Indications
Western
- Cough
- Bronchitis
- Sore throat
- Urinary tract infections
- Kidney stones
- Digestive sluggishness
- Poor appetite
- Skin conditions
Syndromes
- Respiratory congestion
- Mild infections
- Detoxification support
- Fluid retention
TCM
No authoritative indications documented.
Ayurveda
No authoritative indications documented.
Unani
No authoritative indications documented.
Constituents & Mechanisms
Watercress contains glucosinolates (precursors to isothiocyanates), flavonoids, vitamin C, carotenoids, chlorophyll, and some alkaloids contributing to its antioxidant, anti-inflammatory, and antimicrobial effects.
Dosage & Preparations
- Infusion of 2-4 g dried herb taken 1-2 times daily
- Fresh leaves consumed as food or salad
- Tincture 1:5 in 40% alcohol, 2-5 mL 1-3 times daily
Safety & Contraindications
Generally regarded as safe when used as food or moderate medicinal doses. Caution is advised for individuals with hyperthyroidism due to the goitrogenic potential. Use cautiously in pregnancy and lactation due to insufficient safety data. Potential interactions include enhanced effect with anticoagulants and additive effects with diuretics.
Astrological Correspondences
No well-supported planetary or elemental correspondences identified for Nasturtium officinale.
Selected References
- Plants For A Future: Nasturtium officinale (Watercress)
- WHO Monographs on Selected Medicinal Plants Volume 2 (2002)
- EMA HMPC Assessment Report on Nasturtium officinale (2015)
- NIH MedlinePlus: Watercress