
Tropaeolum majus
Also known as garden nasturtium, Indian cress, monks cress, large-flowered nasturtium.
Nasturtium is the trailing, round-leaved garden annual with orange, red and yellow flowers, native to the Andes and grown worldwide since the seventeenth century. The fresh leaves and flowers are the medicine. In modern European phytotherapy it is a licensed remedy, usually combined with horseradish, for infections of the urinary and respiratory tracts, and one of the few herbal antimicrobials with reasonable clinical data behind it.

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Ask HerbertRecurrent cystitis in a patient who wants to avoid repeated antibiotic courses, taken fresh or as the standardized nasturtium and horseradish combination
Sinusitis or bronchitis with thick yellow discharge that lingers after a cold, in someone who tolerates pungent, mustard-like remedies
A run-down patient in late winter who needs a fresh green, vitamin-rich food herb as much as a medicine
The record lists 7 contraindications; open the plate in the library to read them in full.
Nasturtium is a food herb with a genuine antimicrobial action, easy to use and easy to underestimate. The glucosinolate glucotropaeolin is split on crushing or chewing into benzyl isothiocyanate, which is absorbed, excreted in the urine and exhaled through the lungs, so the herb reaches exactly the two tissues where it is used.
| Preparation | As written | Metric |
|---|---|---|
| Fresh herb (leaf and flower) | 20-30 g fresh herb daily | 20000-30000 mg |
| Fresh plant juice | 10-15 mL three times daily | 10-15 mL |
| Fresh plant tincture (1:2, 45%) | 2-4 mL three times daily | 2-4 mL |
| Nasturtium 200 mg and horseradish 80 mg tablets | 4 tablets three times daily with meals |
Doses are reproduced from the sources for practitioners and are not a recommendation for any person.
Overview. Nasturtium is the trailing, round-leaved garden annual with orange, red and yellow flowers, native to the Andes and grown worldwide since the seventeenth century. The fresh leaves and flowers are the medicine. In modern European phytotherapy it is a licensed remedy, usually combined with horseradish, for infections of the urinary and respiratory tracts, and one of the few herbal antimicrobials with reasonable clinical data behind it.
Clinical Notes. Nasturtium is a food herb with a genuine antimicrobial action, easy to use and easy to underestimate. The glucosinolate glucotropaeolin is split on crushing or chewing into benzyl isothiocyanate, which is absorbed, excreted in the urine and exhaled through the lungs, so the herb reaches exactly the two tissues where it is used.

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