Educational reference only · Not medical advice
Botanical illustration of Hyssop

Hyssopus officinalis

Hyssop

Lamiaceae

Evidence: InsufficientCaffeine Free MediterraneanSafety information on file
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At a Glance

Common name
Hyssop
Scientific name
Hyssopus officinalis
Family
Lamiaceae
Region
Mediterranean
Plant part
Aerial parts
Caffeine
Caffeine Free
Evidence
Insufficient
Safety review
Safety information on file

Safety & Cautions

Safety information on file
Contraindications
Generally safe in tea amounts; avoid in pregnancy, epilepsy, and with the pure essential oil; discontinue before surgery; caution with antidiabetic drugs.
Drug interactions
May lower blood sugar and blood pressure; may interact with antiepileptic drugs (pulegone in oil); consult a clinician.
Pregnancy
Avoid medicinal doses.
Children
Mild infusions acceptable in small amounts for short-term use.
Allergies
Possible in those sensitive to Lamiaceae; rare.
Known adverse effects
Generally well tolerated; may cause mild GI upset or, rarely, allergic reactions; the pure essential oil is toxic internally — use only the herb tea.

Botanical Description

A compact bushy perennial with small opposite lance-shaped dark green leaves and dense spikes of small tubular two-lipped purple-blue flowers; the aerial parts are the part used.

Also known as: Holy Herb, Hyssopus, Isop

Historical Background

Hyssop has been a sacred cleansing and respiratory herb of Biblical, Greek, and European traditions for millennia, mentioned in scripture as a purifying plant. Its aromatic spikes brew a gentle, slightly camphor-like tea long sipped for respiratory and digestive comfort.

Earliest recorded uses: Biblical, Greek, and European traditions for millennia; a sacred cleansing and respiratory herb.

Traditional preparations:

  • Aerial-part infusion
  • Respiratory tea with thyme
  • Digestive bitter blend

Traditional Uses

These uses document historical traditions and do not imply proven effectiveness.

Mediterranean Traditions

Sacred cleansing and respiratory herb of scripture.

Modern Herbalism

Respiratory and digestive tea.

Flavor & Aroma

HerbalSlightly BitterCamphor-likeMinty

Aroma: Herbal, slightly bitter, camphor-like, minty

Tea Preparation

Preparation methods
Infusion
Steeping temperature
200°F (93°C)
Steeping time
5-10 minutes (covered)
Recommended vessel
Covered teapot
Blends well with
Mint, Thyme, Licorice Root, Honey, Lemon
200°F (93°C) 5-10 minutes (covered)

Modern Evidence

Evidence level: Insufficient

Hyssop has a long tradition for respiratory and digestive comfort; preclinical work shows antiviral and antioxidant activity. Clinical evidence is insufficient and the pure essential oil is unsafe internally. It is not a treatment for cough, asthma, infection, or any disease.

Evidence levels describe the state of research for the traditional use discussed here, not a recommendation. Historical use does not imply effectiveness.

References & Sources

  1. EMA HMPC · Hyssopi herba monograph (2014)
  2. PubMed · Hyssopus officinalis review (2019)

Entry last updated August 4, 2026

Soothing Brews

An educational encyclopedia preserving the history, traditions, and modern evidence behind herbs used in teas and infusions. Inspired by antique botanical manuscripts.

Steeped in tradition, grounded in honesty.

Please Note

This is an educational reference, not a medical resource. Historical use does not imply effectiveness. Natural does not always mean safe. Consult a qualified healthcare professional before using herbs, especially if pregnant, nursing, or taking medications.

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Preferred sources: NIH ODS · NCCIH · MSK Herbs · PubMed · WHO · EMA · German Commission E · Cochrane