Hyssopus officinalis (L)
Synonyms and Common names: German = ysop, French = Hyssope officinale, Spanish = Hisopo
Description: Hyssopus is a perennial herb of bushy habit. It grows up to 50cm tall, with square, richly branched and densely leafy stems covered in downy hair. The opposite, almost sessile leaves are narrowly tapering, blunt-tipped, leathery, glossy, almost glabrous, with sessile small glands, and are entire with inrolled edges. The symmetrical flowers are blue-violet in colour, appearing from July to October in groups of three to seven in the upper axils, forming single terminal spikes. They have a tubular calyx divided into five tapering teeth which terminate in a small spine. The two-lipped corolla has a tube about as long as the calyx. The fruit are brown nutlets. Hyssopus favours light dry soil in its natural habitat of southern Europe but it is widely cultivated elsewhere.
Parts used: Aerial parts, essential oil
Collection: The aerial parts are collected during July.
Constituents: up to 2% volatile oil (comprising pinocamphone, isopinocamphone, pinenes, camphine, terpinene, thujone and linalool, as well as over 50 other compounds), a glycoside (hyssopin), up to 8% tannins, flavonoids, insolic acid, oleonolic acid, a bitter substance (marrubiin), resin, gum
Actions: Relaxing expectorant, diaphoretic, sedative, carminative, pectoral, antispasmodic, nervine, peripheral vasodilator, anticatarrhal, topical anti-inflammatory, antiviral, emmenagogue
Indications: Bronchitis, chronic nasal catarrh. Has been used in hysteria, anxiety states and petit mal. Specifically indicated in bronchitis and the common cold.
Therapeutics and Pharmacology: Hyssopus is extensively used in the treatment of coughs, bronchitis and chronic catarrh, particularly in children and those of a nervous disposition. The volatile oil component has an antispasmodic action, while the marrubiin, also present in Marrubium, has expectorant qualities. As a diaphoretic, Hyssopus is beneficial in the treatment of the common cold in the management of influenza. Extracts of the herb have demonstrated antiviral activities, particularly against the Herpes simplex virus that causes cold sores. Externally, hyssopus can be used to treat burns and bruises.
The essential oil increases alertness and is used as an uplifting and gently relaxing nerve tonic, suitable for nervous exhaustion linked with overwork and anxiety, or for depression. It is of particular benefit in helping to ease feelings of grief and guilt.
Combinations: Hyssopus may be combined with Marrubium for bronchial catarrh or with Calendula flowers in childhood fevers. In the treatment of the common cold it may be mixed with Eupatorium perfoliatum, Sambucus flos. and Mentha piperata.
Caution: Excessive doses of Hyssopus affect the brain centres and can cause nervous disorders and trembling. The essential oil contains the ketone pino-camphene, which in high doses can cause convulsions, and so should only be used externally.
Preparation and Dosage: (thrice daily)
Regulatory Status: GSL Schedule 1
Dried herb: 2-4g or by infusion
Liquid Extract: 1:1 in 25% alcohol, 2-4ml
Tincture: 1:5 in 45% alcohol, 2-4ml
Additional Comments: Hyssop is derived from the Hebrew name Esob, although the hyssop often referred to in the Bible is more likely to have been a local variety of marjoram. Its name may also derive from the Greek word azob, or holy herb. Hippocrates recommended the herb for pleurisy and Dioscorides combined it with rue for the treatment of asthma and catarrh. Traditionally, it was strewn on floors and shelves to repel insects, or added to pot pourri and laundry rinses. It has also been used to kill head lice and intestinal worms. It was once popularly combined with figs to treat constipation. Hyssop is one of the 130 herbs used to flavour the liqueur Chartreuse.
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Last updated 27th November 2014 ŠPurple Sage Botanicals