Mentha × piperita
Peppermint
Generally recognised as safeOther names: Peppermint
Cool menthol aroma.
A perennial mint with rhizomes and opposite leaves, a hybrid of Mentha aquatica × Mentha spicata. Its leaves flavour food and infusions. Distilled essential oil is a different preparation: its clinical findings and doses cannot be transferred to tea, honey or syrup.
- Family
- Lamiaceae
- Plant type
- Perennial herb
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.
H. Zell, Wikimedia Commons, CC BY-SA 3.0. General view of the stand; fine diagnostic features are not shown.
Plant habit
Safety — read before use
For this herb it is important to check warnings, mix-ups and cautions. Start with the Safety section.
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
- Processing methods
Herbal infusion (tea), Honey macerate, Syrup, Essential oil and more
All methods and recipes on the card- Topics and symptoms
Anxiety & inner restlessness, Bloating & gas, Breathing comfort…
Topics section, Symptoms overview
Identification and mix-ups
Leaves are opposite, shortly stalked, toothed and pointed. Small pink to lilac flowers form terminal spike-like clusters. Stems may be green or reddish; colour or scent alone does not identify the hybrid.
Possible mix-ups and risks
Mentha spicata usually has almost stalkless leaves; Mentha aquatica often has rounded flower clusters. Mints hybridise: assess leaf stalks, inflorescences and hairs together with a botanical key. Do not collect uncertain plants for food; scent alone is insufficient.
Similar herbs
- Lemon balm
Similar use in herbal teas; watch for precise species identification when foraging.
- Wild thyme
For peppermint, check opposite, shortly stalked, toothed leaves together with terminal spike-like flower clusters. Use a botanical key to distinguish it from wild thyme; scent alone does not identify the plant.
- Common sage
Culinary and tea Lamiaceae herbs; mint is refreshing while sage tends to be denser and more bitter.
Topics and symptoms
More topics are in the symptoms and topics overview.
- Anxiety & inner restlessnessTraditional· Traditional / cultural framing
- Bloating & gasTraditional· Traditional / cultural framing
- Breathing comfortTraditional· Traditional / cultural framing
- Cough and mucusTraditional· Traditional / cultural framing
- Diarrhea and indigestionTraditional· Traditional / cultural framing
- DigestionCulinary· Traditional / cultural framingScientific· Preliminary or weaker scientific findingsTraditional· Traditional / cultural framing
- Focus and attentionTraditional· Traditional / cultural framing
- Head tension & headachesTraditional· Traditional / cultural framing
- Heavy digestionTraditional· Traditional / cultural framing
- IrritabilityTraditional· Traditional / cultural framing
- Mouth and gumsTraditional· Traditional / cultural framing
- Nausea & queasy stomachTraditional· Traditional / cultural framing
- Sleep & dreamsTraditional· Traditional / cultural framing
- Space clearing (ritual)Spiritual· Symbolic / cultural framing
- Stuffy nose & coldsTraditional· Traditional / cultural framing
- TopicScientific· Preliminary or weaker scientific findingsTraditional· Traditional / cultural framing
Drug interactions and photosensitivity
Information on the card — not a substitute for professional medical care or individual assessment.
Drug interactions
For gastro-resistant peppermint-oil capsules only: antacids, H2 blockers and proton pump inhibitors may cause premature release. EMA recommends avoiding this combination; this is not an established interaction of leaf tea.
Sources
Geographic occurrence
Czechia
Common (expected wild occurrence in the region)
Widespread occurrence in the Czech Republic in suitable habitats.
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)
France
Common (expected wild occurrence in the region)
Japan
Common (expected wild occurrence in the region)
Morocco
Common (expected wild occurrence in the region)
Canada
Occasional (garden, cultivation, or fringe of the range)
Australia
Occasional (garden, cultivation, or fringe of the range)
Harvest
- LeafMay–September
summer
Region: CzechiaNotes: Harvest leaves during active growth; choose young shoot tips for cooking. May–September is an indicative local season, not a fixed window for every garden. Source: RHS — https://www.rhs.org.uk/herbs/mint/grow-your-own
Storage
- Drying(Leaf)
Keep fully dried leaves in a labelled airtight container in a cool, dry, dark place.
- Light:
- Out of direct UV.
- Moisture:
- Low relative humidity.
- Safety:
- Source: University of Maryland Extension — https://extension.umd.edu/resource/harvesting-and-preserving-herbs
Processing methods on this herb card
Infusion or brief extraction in hot water; usually without long boiling.
Full method description (from the catalogue)
Here, herbal tea is prepared as an infusion: pour freshly boiling water over dried herbs or a herbal blend and steep for at least 5 minutes. BfR gives this as a hygiene rule, not a medicinal dose. Follow the specific product instructions, including a longer steeping time when stated. This rule for herbal infusions is not a general preparation guide for true tea (Camellia sinensis). 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
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
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
A concentrated aromatic plant product; use depends on the specific product.
Full method description (from the catalogue)
Essential oil is a concentrated plant product obtained, for example, by steam distillation or pressing. A general drop count or dilution ratio does not establish safe use.
Choose a finished product intended for your purpose and follow its directions. Do not apply it to skin or swallow it unless the manufacturer explicitly allows that use. This overview is not a recipe for home dilution.
Traditional context for this method: yes·Scientific context for this method: yes
Home steam inhalation over a container of hot water is discouraged because of the risk of scalds.
Full method description (from the catalogue)
This page describes the risks of home steam inhalation over a container of hot water; it is not a guide to performing it. Newcastle Hospitals NHS advises against this home remedy. Spilled hot water can cause serious scalds, especially in children. Evidence of effectiveness for nasal congestion is limited.
Traditional context for this method: yes·Scientific context for this method: no
Traditional / spiritual use
Kept separate from science — entries are cultural or symbolic, not medical advice.
Related guides in the library
Kitchen table peppermint: clean taste, cool impression
General
Traditional useFolk useHerbal loreKew documents culinary use of the leaves in infusions and as a seasoning. The association with clean flavour and refreshment here is editorial imagery, not a documented historical belief or therapeutic effect.
- Form:
- tea, fresh aerial parts, seasoning
- Claim strength:
- Tradition
- Source note:
- Kew POWO, Mentha × piperita, Uses: https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:450969-1/general-information
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.
EMA (2020) distinguishes the traditional use of peppermint leaf for dyspepsia and flatulence from clinical evidence on specific essential-oil preparations.
Review articleRegulatory assessment / monograph (EMA, WHO…)Year: 2020Preparation form in the study: Leaf: medicinal infusions and specified tinctures; essential oil: separately assessed preparations
Limitations: Findings from gastro-resistant peppermint-oil capsules cannot be transferred to leaf tea, honey, syrup or home steam inhalation. This regulatory assessment is not a clinical trial of this recipe.
EMA Committee on Herbal Medicinal Products (HMPC) — European Medicines Agency
EMA: Assessment report on Mentha × piperita L., folium and aetheroleum (revision 1)
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.
- Peppermint leaf: reflux, allergy and restrictionsHigh severityInternal use
Do not use medicinal leaf preparations with peppermint or menthol allergy; avoid them with reflux, as heartburn may worsen. Use caution with gallstones and other biliary disorders. EMA does not recommend medicinal use under 4 years or during pregnancy and breastfeeding because data are insufficient.
- Peppermint essential oil is not leaf teaHigh severityInternal use
Age restrictions for the oil depend on the preparation. Inhalation and traditional topical preparations are contraindicated below 2 years (risk of reflex apnoea and laryngospasm) and in children with a history of seizures. Do not use with peppermint-oil or menthol allergy. Follow the product leaflet for route and dose, not a universal homemade dilution.