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Hyssopus officinalis

Hyssopus officinalis

Other names: Yzop

Blue flowers; strong garden aroma.

Narrow leaves, dense inflorescence.

Family
Lamiaceae
Plant type
Perennial herb
Safety level (indicative)
Generally recognised as safe
What the safety levels mean (expand legend)
  • Generally recognised as safe. Often a common herb with reasonable harvest and use; still read the specific warnings on the card.
  • Information. Primarily informational — details in the text and warnings below matter most.
  • Caution. Needs extra care (dose, duration, sensitive groups, interactions).
  • Risky. Significant risks — verify sources, contraindications and professional guidance.
  • Not for home experimentation. Not suitable to experiment with at home without knowledge and certainty.
  • High risk for internal use. Particular risk with internal use (e.g. alkaloids); avoid prolonged or irresponsible dosing.
  • Not specified. Level not filled in yet — rely on individual warnings and links below.
Yzop lékařský — habitus rostliny (Wikimedia Commons).

Fotografie na Wikimedia Commons (CC BY 4.0).

Plant habit

Quick overview

A practical summary; details are in the sections below.

Safety grade
Generally recognised as safe·details
Scientific sources on the card
Yes — sources are listed with claims·Science section
When and what to harvest
  • Leaf — May–September
Full harvest section
Processing methods

Herbal infusion (tea), Syrup, Honey macerate

All methods and recipes on the card
Topics and symptoms

Anxiety & inner restlessness, Breathing comfort, Cough and mucus…

Topics section · Symptoms overview

Identification and mix-ups

Upright habit.

Possible mix-ups and risks

Savory and lavender.

Similar herbs

No related herbs are linked yet.

Topics and symptoms

More topics are in the symptoms and topics overview.

Geographic occurrence

  • Czechia

    Common (expected wild occurrence in the region)

  • Austria

    Occasional (garden, cultivation, or fringe of the range)

  • Germany

    Occasional (garden, cultivation, or fringe of the range)

  • Hungary

    Occasional (garden, cultivation, or fringe of the range)

  • Poland

    Occasional (garden, cultivation, or fringe of the range)

  • Slovakia

    Occasional (garden, cultivation, or fringe of the range)

Harvest

  • LeafMay–September

    léto

    Region: Czechia

    Notes: Harvest note (full translation pending): Nat nebo list v suchu; cista stanoviste.

Storage

  • Drying(Leaf)

    Sušený rostlinný materiál uchovávej v uzavřené nádobě.

    Light:
    Mimo přímé UV.
    Moisture:
    Nízká relativní vlhkost.

Processing methods on this herb card

  • Herbal infusion (tea)(Leaf)Suitability: High suitability

    Infusion or brief extraction in hot water; usually without long boiling.

    Full method description (from the catalogue)

    In the narrow sense, “tea” often means an infusion: you pour water just off the boil over the dried plant matter and let it steep for a few minutes. Temperature, steep time, and the herb-to-water ratio change both flavour and what dissolves into the liquid.

    Compared with a decoction, heat exposure is shorter and gentler; tender leaves and flowers are often better as an infusion than with prolonged simmering. For each herb, always follow the plant card for suitable plant part, preparation, and safety notes — general rules never replace species-level judgement.

    Traditional context for this method: yes·Scientific context for this method: no

    Procedure (recipe)

    Hyssop infusion

    About 8 min · Difficulty: Beginner

    1. Use 1 teaspoon of dried herb per cup — hyssop is strongly aromatic.
    2. Pour boiling water, cover, and steep 5–8 minutes.
    3. Strain; if too intense next time, use less herb or shorten the time.

    Why this way (extraction / behaviour of constituents)

    Home preparation following this recipe is mainly educational and cultural in intent; it does not automatically match the extraction or safety profile of registered medicines or standardized extracts. Check specific effects, drug interactions, and contraindications on the herb card and with a clinician if you use medication.

    What is typically released
    orientační domácí extrakce — profil závisí na teplotě, času řezu a poměrech
    Solvent / water
    mediální složení (voda, alkohol, olej, med…) viz jednotlivé kroky
    After preparation
    po přípravě uchovávej hygienicky a podle typu výrobku (chlad, světlo, alkohol)

    Extra literature for the recipe

  • Syrup(Leaf)Suitability: Medium suitability

    Decoction or infusion with sweetener and reduction; shelf life depends on sugar and storage.

    Full method description (from the catalogue)

    Syrups combine a herbal base with sugar or honey and often a short boil to concentrate and improve hygiene. Preservation depends strongly on water content, sugar level, and bottling practice.

    Home syrups may fall under food rules; store in the fridge after opening per recipe.

    Traditional context for this method: yes·Scientific context for this method: no

    Procedure (recipe)

    Hyssop syrup

    About 40 min · Difficulty: Beginner

    1. Steep 2 tsp dried tops in 350 ml boiling water under a lid for 15 minutes, then strain.
    2. Add honey or sugar and warm briefly without boiling.
    3. Store chilled; hyssop is potent — start small and well diluted.

    Sweet syrup — caution with diabetes.

    Why this way (extraction / behaviour of constituents)

    Home preparation following this recipe is mainly educational and cultural; it should not be assumed to match the extractive or safety profile of registered medicines or standardized extracts. Check specific effects, drug interactions, and contraindications on the herb card and with your clinician if you use prescription drugs.

    What is typically released
    orientační domácí extrakce — profil závisí na teplotě, času řezu a poměrech
    Solvent / water
    mediální složení (voda, alkohol, olej, med…) viz jednotlivé kroky
    After preparation
    po přípravě uchovávej hygienicky a podle typu výrobku (chlad, světlo, alkohol)

    Extra literature for the recipe

  • Honey macerate(Leaf)Suitability: Medium suitability

    Macerating plant material in honey (a honey conserve).

    Full method description (from the catalogue)

    Honey as a maceration medium creates a viscous mixture with its own biochemistry: water activity, acidity, and enzymes influence shelf life and flavour. Traditionally it is used with delicate flowers or herbs when you want aroma bound into honey.

    Infant botulism guidance for honey and honey safety in general sit outside a single herb page; maceration time, ratios, and storage must follow a vetted recipe and source, not this general overview alone.

    Traditional context for this method: yes·Scientific context for this method: no

    Procedure (recipe)

    Hyssop honey

    About 30 min · Difficulty: Beginner

    1. Fill about one quarter of the jar with dried tops and cover with honey.
    2. Macerate about two weeks, then strain — intensely aromatic.

    Maceration takes weeks.

    Why this way (extraction / behaviour of constituents)

    Hyssop has very strong volatiles; honey maceration concentrates aroma quickly. A shorter duration and a thinner layer of plant reduce the risk of harsh bitterness and unwanted changes on long storage.

    What is typically released
    Silice a polární frakce v medu.
    Solvent / water
    Med; macerace cca 2 týdny.
    After preparation
    Po scedění chladně.

    Extra literature for the recipe

Traditional / spiritual use

Kept separate from science — entries are cultural or symbolic, not medical advice.

Related guides in the library

  • Traditional folk context

    General

    The herb appears in older folk customs referenced on Czech cards. This note is cultural memory and seasonal storytelling — not a dosing guide, clinical indication, or substitute for the safety section.

    Form:
    různé
    Claim strength:
    Tradition
    Source note:
    Cultural framing only.

Scientific notes

Each claim lists a study type and a source (URL or DOI) where available. Dose notes from the literature are informational only.

How to read evidence strength and study type labels

Labels summarise how the catalogue entry is tagged — they are not a medical verdict on efficacy. For every row, read the summary, limitations and source link.

Evidence strength

Evidence level not specified
The author did not grade the record; judge from the summary, limitations and source link.
Narrative / orientational literature
Descriptive or expert literature without controlled group comparison — context rather than proof of effect.
Weak evidence
Study or conclusion with major methodological limits; treat only as a pointer for further reading.
Preliminary findings
First or smaller studies — interesting direction, not the final word on efficacy or safety.
Moderate strength of evidence
Moderate strength by study design; sample and context limits still apply.
Stronger evidence
Stronger design or consistency of results within the study’s stated limits.
Review article
A review summarises multiple sources; quality depends on review method and field.

Study type

Narrative / expert text
Expert text or overview without a classical study design.
In vitro study
Cell culture or test-tube experiment — does not show an effect in the body.
Animal study
Animal model — transfer to humans is not automatic.
Observational study
Observing groups without random treatment assignment; confounding is possible.
Clinical trial
Human clinical trial; sample size and control group matter.
Randomised controlled trial
Randomised controlled trials are among the stronger designs when well conducted.
Review study
A review aggregates multiple papers — quality depends on selection rules.
Systematic review
Systematic review with explicit search and selection methodology.
Meta-analysis
Statistical pooling of studies; outcome depends on input data and heterogeneity.
Regulatory assessment / monograph (EMA, WHO…)
Regulatory body summary for a herbal product — different context from a single RCT; often about products, not home tea.
Expert monograph (herbal preparations)
Structured literature summary for a plant or drug — quality depends on author and edition year.

  • Evidence summary (full translation pending): O ucincich a bezpecnosti existuje odborna literatura; zaznam je orientacni a nenahrazuje peci odbornika.

    Evidence level not specifiedNarrative / expert text

    Limitations: Limitations (translation pending): Seed katalogu — dopln konkretni studie podle obsahu.

    Vyhledávání studií (PubMed apod.)

Images

The main photo is in the card header. More images will appear here when available.

Safety

What the warning types mean

The type on each warning helps group themes — it does not replace the separate severity badge.

Internal use
Risks from swallowing, extracts, duration of use or concentration for internal use.
Interactions / medicines
Possible effect on medicines or concurrent treatment — check sources and a professional.
Raw plant parts
Raw, unripe or poorly prepared plant parts can be dangerous.
Toxins and regulation
Toxic constituents or regulated compounds (e.g. in distillates).
Contact with the plant
Skin or mucosa irritation from contact with fresh plant or sap.
Allergy
Allergic reactions, often linked to family sensitisation.
Harvesting and contamination
Contamination, species mix-ups or harvesting from unsuitable places.

No structured safety records yet.