Hyssop has a long history of medicinal use and was so highly esteemed in the past that it was considered to be a virtual cure-all. Currently an undervalued herb, it is often used as a household remedy, particularly as an expectorant and stomach tonic. It has a positive effect when used to treat bronchitis and respiratory infections, especially where there is excessive mucous production. Hyssop can irritate the mucous membranes, so it is best given after an infection has peaked, when the herb's tonic action encourages a general recovery. The plant should not be used by pregnant women, however, since in large quantities it can induce a miscarriage. The leaves and flowering tops are antiseptic, antitussive, astringent, carminative, diaphoretic, emmenagogue, expectorant, pectoral, sedative, stimulant, stomachic, tonic and vasodilator. The plant can be harvested when in full flower and dried for later use. A tea made from the leaves is used in the treatment of flatulence, stomach-aches, upper respiratory tract infections, coughs in children etc. A poultice made from the fresh herb is used to heal wounds. The essential oil is used in aromatherapy. Its keyword is 'Stability'. This oil should not be used on people who are highly strung as it can cause epileptic symptoms. The essential oil should not be used internally except under professional supervision. Source: https://pfaf.org/
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