Botanical Information
- Family: Brassicaceae (Cruciferae)
- Common Names: Watercress
- Parts Used: Leaves, stems, flowers
Description
Nasturtium officinale, commonly known as watercress, is a fast-growing aquatic plant rich in vitamins, minerals, and phytonutrients. Traditionally used as a nutrient-dense tonic, it has been valued for its blood-cleansing, digestive, and respiratory-supporting properties.
Historical and Traditional Uses
- Used in European folk medicine as a blood purifier and spring tonic.
- Consumed in ancient Rome and Greece to enhance stamina and mental clarity.
- Traditionally employed as a digestive aid and appetite stimulant.
- Used for respiratory conditions such as bronchitis and chronic coughs.
Constituents
- Glucosinolates
- Flavonoids
- Vitamins A, C, K
- Iron
- Iodine
- Calcium
- Sulfur compounds
Actions
- Nutritive
- Expectorant
- Digestive stimulant
- Diuretic
- Antioxidant
- Blood tonic
Medicinal Uses
1. Nutritional Tonic:
Rich in vitamins and minerals, watercress is used as a general health tonic to support vitality.
2. Blood Cleansing and Detoxification:
Traditionally used to purify the blood and support liver detoxification.
3. Digestive Health:
Stimulates digestion, aids in nutrient absorption, and helps with sluggish digestion.
4. Respiratory Support:
Used for its expectorant properties to ease mucus buildup and chronic coughs.
5. Skin and Hair Health:
Applied topically or consumed to promote clear skin and strong hair.
Preparation and Dosage
Fresh Use (Salads & Juices):
- Leaves can be eaten raw in salads or blended into juices.
Infusion (Tea):
- 1-2 tsp of fresh or dried leaves per cup of hot water. Steep for 10 minutes and drink up to twice daily.
Poultice (Topical Use):
- Crushed fresh leaves applied to minor wounds or skin conditions.
Tincture:
- 2-5 ml taken up to 3 times daily.
Precautions and Contraindications
- Pregnancy and Lactation: Avoid excessive amounts due to its potential uterine-stimulating effects.
- Thyroid Conditions: High iodine content may affect thyroid function; use with caution.
- Kidney Disorders: Diuretic properties may strain kidney function in some individuals.
Energetics (Traditional Medicine Perspectives)
- Traditional Western Herbalism: Cooling and drying; supports digestion and blood purification.
- Ayurveda: Balances Kapha and Pitta, but excessive use may aggravate Vata.
- Traditional Chinese Medicine (TCM): Clears heat and phlegm, supports lung and liver function.
Combinations
- For Blood Purification: Combine with burdock and dandelion.
- For Digestive Support: Combine with ginger and fennel.
- For Respiratory Health: Combine with mullein and thyme.
Harvesting and Storage
- Harvesting: Leaves are collected fresh throughout the growing season.
- Drying: Can be dried but best used fresh for maximum potency.
- Storage: Store dried leaves in airtight containers away from moisture and light.
Modern Research
Studies confirm Nasturtium officinale’s antioxidant, blood-purifying, and digestive-stimulating properties, reinforcing its traditional uses.
Watercress remains a valuable herb in both traditional and modern herbal medicine, particularly for detoxification, digestion, and respiratory support.