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Home -> Shop By Store -> St. John's Wort
St. John's Wort
Botanical Name
Hypericum perforatum (LINN.)
Parts Used
Herb tops, flowers.
Habitat
Britain and throughout Europe and Asia.
Introduction
St. John's wort (Hypericum perforatum in Latin) is a long-living plant with yellow flowers. It contains many chemical compounds. Some are believed to be the active ingredients that produce the herb's effects, including the compounds hypericin and hyperforin.
How these compounds actually work in the body is not yet known, but several theories have been suggested.St. John's wort might work by preventing nerve cells in the brain from reabsorbing the chemical messenger serotonin, or by reducing levels of a protein involved in the body's immune system functioning.
Clinical Importance and Uses
St. John's Wort is Aromatic, astringent, resolvent, expectorant and nervine.St. John's Wort is Aromatic used in all pulmonary complaints, bladder troubles, in suppression of urine, dysentery, worms, diarrhoea, hysteria and nervous depression, haemoptysis and other haemorrhages and jaundice. For children troubled with incontinence of urine at night an infusion or tea given before retiring will be found effectual; it is also useful in pulmonary consumption, chronic catarrh of the lungs, bowels or urinary passages. Externally for fomentations to dispel hard tumours, caked breasts, ecchymosis, etc.
St. John's Wortused for treating depression.
Preparations and Dosages
1 OZ. of the herb should be infused in a pint of water and 1 to 2 tablespoonsful taken as a dose. Fluid extract, 1/2 to 1 drachm. The oil of St. John's Wort is made from the flowers infused in olive oil.
Precautions
St. John's Wort because of some cases of photosensitivity that have been reported.
St. John's Wort. St. John's Wort should not be taken while also taking prescription antidepressants.
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