Hyssop

BotanicalBest with a meal

What is it

Hyssop (Hyssopus officinalis) is an aromatic Mediterranean herb in the mint family, used traditionally as a culinary herb and for respiratory and digestive complaints.

Evidence for 1 use

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Mild cough and upper-airway irritation

Limited Evidence

Traditional use is well documented; modern clinical trials are limited.

How it works

Hyssop essential oil contains pinocamphone and isopinocamphone, plus mostly flavonoids and rosmarinic acid in water extracts. Traditional uses include relief of cough and upper-airway irritation. Pinocamphone-rich essential oil has neurotoxic potential at high doses; aerial-parts teas and water extracts are considered milder.

Dosage

Tea: 1-2 g of dried herb per cup, two to three times daily. Avoid undiluted essential oil internally.

When and how to take it

No strict timing. Tea commonly taken with meals or for symptom relief.

2 commercial forms

Compare the main delivery options and what they’re best suited for.

Dried aerial parts / tea

Traditional safer form.

Water-soluble actives extract well.

Essential oil

Use cautiously and not internally without guidance.

Concentrated; neurotoxicity risk at high doses.

Safety

Aerial parts as a tea or culinary herb are generally well tolerated. Concentrated essential oil can be neurotoxic and has caused seizures in high doses, especially in children.

Who should be cautious

Avoid essential oil internally in pregnancy, in children, and in people with epilepsy. Tea and culinary use are generally safer.

Interactions

No major documented drug interactions at culinary doses. Essential oil carries seizure risk and should be used cautiously with seizure-threshold-lowering drugs.

Food sources

Hyssop leaves as culinary herb

Amount
small amount
%DV
—

Frequently asked questions

Is hyssop the same as the biblical 'hyssop'?⌄

The biblical 'ezov' is widely thought to refer to a different plant, possibly Syrian oregano (Origanum syriacum), not Hyssopus officinalis.

Can I take hyssop essential oil internally?⌄

Not without guidance. Hyssop essential oil contains pinocamphone, which can cause seizures at high doses, especially in children.

References

Hyssop on Wikidata — Wikidata link

Hyssop on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Hyssop (PubMed search) — PubMed link

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.