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Rumex acetosa

Rumex acetosa

Other names: Šťovík

Sour leaves for salads and soups.

Arrow-shaped leaves; reddish-brown ochreas.

Family
Polygonaceae
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.
Šťovík kyselý — habitus rostliny (Wikimedia Commons).

Fotografie na Wikimedia Commons (CC0).

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 — April–June
Full harvest section
Processing methods

Herbal infusion (tea), Fresh (raw) preparation, Herbal vinegar

All methods and recipes on the card
Topics and symptoms

Digestion

Topics section · Symptoms overview

Identification and mix-ups

Racemose inflorescence.

Possible mix-ups and risks

Other docks by leaf and ochrea.

Similar herbs

No related herbs are linked yet.

Topics and symptoms

More topics are in the symptoms and topics overview.

  • Digestion
    Traditional· Traditional / cultural framing

Geographic occurrence

  • Czechia

    Common (expected wild occurrence in the region)

  • Austria

    Common (expected wild occurrence in the region)

  • Germany

    Common (expected wild occurrence in the region)

  • Hungary

    Common (expected wild occurrence in the region)

  • Poland

    Common (expected wild occurrence in the region)

  • Slovakia

    Common (expected wild occurrence in the region)

Harvest

  • LeafApril–June

    jaro

    Region: Czechia

    Notes: Harvest note (full translation pending): Mlade listy; kyselost znasobuje puda.

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)

    Garden sorrel leaf tea

    About 8 min · Difficulty: Beginner

    1. Use 1 teaspoon of dried leaf per cup — sourness is pronounced.
    2. Pour boiling water, cover, and steep 5–8 minutes.
    3. Strain; drink occasionally, not as your main fluid intake if your stomach is sensitive.

    High acid content — use caution with reflux or peptic ulcers.

    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

  • Fresh (raw) preparation(Leaf)Suitability: High suitability

    Raw use (salads, fresh leaves, etc.).

    Full method description (from the catalogue)

    Raw preparation keeps cell structure and yields a different flavour and chemistry profile than cooking. For wild plants, confident identification, clean harvesting, and knowledge of inedible or toxic parts or growth stages are essential.

    Washing, brief blanching, or other steps can improve safety for specific taxa — that belongs on the herb card, not in a single general rule.

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

    Procedure (recipe)

    Spring salad with common sorrel

    About 15 min · Difficulty: Beginner

    1. Pick young leaves from a clean site, rinse well in cold water, and pat dry.
    2. Chop or tear bite-sized pieces and mix with other mild leaves (e.g. dandelion, cress).
    3. Dress with oil, a pinch of salt, and optionally honey — balance sorrel acidity with a slightly sweeter dressing.

    High acid content — eat modestly if you have reflux or a sensitive stomach.

    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

  • Herbal vinegar(Leaf)Suitability: High suitability

    Maceration or extraction in vinegar; acidity changes flavour and extraction.

    Full method description (from the catalogue)

    Herbal vinegar uses acetic acid as part of the solvent. You get different flavours and sometimes different stability than with alcohol or water. Vinegars are used culinarily and as bases for traditional oxymels per recipe.

    Vinegar quality (food grade, known origin) matters; metal vessels can react — prefer glass or stainless steel.

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

    Procedure (recipe)

    Sorrel vinegar

    About 25 min · Difficulty: Beginner

    1. Chop young leaves, fill the jar about one third, and cover with apple vinegar.
    2. Macerate about two weeks, strain — a sharp salad dressing base.

    High acid load — use caution if you have reflux or peptic ulcers.

    Why this way (extraction / behaviour of constituents)

    Leafy acid macerates can be rich in plant organic acids on top of the vinegar itself; low pH changes extraction equilibria. This is a sharp culinary condiment — use caution if you have reflux or peptic ulcer disease.

    What is typically released
    Kyseliny a polární metabolity v octě.
    Solvent / water
    Jablečný ocet; macerace cca 2 týdny.
    After preparation
    Po scedění skladuj 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.