🌢️Latin American CuranderismoπŸŒ„Mapuche Medicine

Poleo (Pennyroyal)

Mentha pulegium

About Poleo (Pennyroyal)

Poleo (Pennyroyal) (Mentha pulegium) is a herb used in the Latin American Curanderismo and Mapuche Medicine traditions to help with Menstrual Issues, Digestive Issues, Cold, and Headache, among 2 other conditions it addresses. The aerial parts and leaves are the parts traditionally used, taken internally.

Botanical background

Mentha pulegium, commonly (European) pennyroyal, or pennyrile, also called squaw mint, mosquito plant and pudding grass, is a species of flowering plant in the mint family, Lamiaceae, native to Europe, North Africa, and the Middle East. Crushed pennyroyal leaves emit a very strong fragrance similar to spearmint. Pennyroyal is a traditional folk remedy, emmenagogue, abortifacient, and culinary herb, but is toxic to the liver and has caused some deaths. European pennyroyal is related to an American

Source: Wikipedia, via iNaturalist

Parts used

Aerial Parts Β· internalLeaves Β· internal
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Tea / Infusion

1–3 cups daily
  • Steep 1–2 tsp of dried Poleo (Pennyroyal) in freshly boiled water for 5–10 minutes.
  • Cover while steeping.
  • Strain and drink.
πŸ’§

Tincture

20–40 drops in water, 2–3Γ— daily
  • Pack dried Poleo (Pennyroyal) into a jar and cover with 40–60% alcohol.
  • Seal and steep for 4–6 weeks, shaking daily.
  • Strain and store in a dark dropper bottle.
πŸ’Š

Powder / Capsule

500 mg – 1 g, 1–3Γ— daily
  • Grind dried Poleo (Pennyroyal) into a fine powder.
  • Fill size 00 capsules or stir into smoothies or honey.
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Steam Inhalation

1–2Γ— daily during acute symptoms
  • Add 2–3 tbsp of Poleo (Pennyroyal) to a bowl of just-boiled water.
  • Drape a towel over your head and inhale steam for 5–10 minutes.

Pregnancy, Breastfeeding & Children

Pregnancy

Avoid

Pennyroyal is contraindicated in pregnancy β€” it has a well-documented history as an abortifacient, and its essential oil is seriously toxic (liver failure, death have been reported), even at doses close to those used for other purposes.

Breastfeeding

Avoid

Contraindicated during breastfeeding due to serious systemic toxicity risk.

Children

Avoid

Contraindicated in children β€” pennyroyal essential oil has caused fatal poisonings even in small amounts.

Contraindications

    Warnings

    ⚠️ Allergic Reactions

    Discontinue immediately if you experience rash, itching, swelling, or difficulty breathing.

    ⚠️ Not Medical Advice

    This information is for educational purposes only. Always consult a qualified healthcare provider before using herbal remedies.

    Drug & herb interactions

    Any use, especially in pregnancy

    Essential oil is hepatotoxic and a known abortifacient β€” internal or concentrated use is not considered safe.

    Where to find in nature

    Native region

    Mexico, Central America, Caribbean

    Climate

    Tropical to semi-arid

    Habitat

    Tropical forests, highland plateaus, and healing plant markets of Latin America

    🌿 To see Poleo (Pennyroyal) growing, visit botanical gardens, university plant collections, or specialist herb nurseries near you. If foraging in the wild, always work with an expert identifier β€” never consume a plant you are not 100% certain of.

    Where to buy

    In store

    • Latin American botanicas (herbal apothecaries)
    • Mexican and Central American grocery stores and markets
    • Health food stores (Whole Foods, Natural Grocers, Holland & Barrett, GNC)
    • Naturopathic clinics and integrative medicine practices
    • Specialist herbal apothecaries and herbalist practices

    Online

    iHerb

    Wide selection of standardised extracts, capsules, and powders with lab testing

    Mountain Rose Herbs

    Premium bulk dried herbs β€” certified organic, ethically sourced

    Starwest Botanicals

    Large selection of certified organic bulk herbs and powders

    Herb Pharm

    High-quality liquid extracts and tinctures, rigorous quality standards

    Amazon

    Convenient β€” verify brand certifications and check third-party testing

    Etsy

    Small-batch artisan herbalists, hand-harvested and wildcrafted herbs

    Quality tips

    When buying Poleo (Pennyroyal), look for: certified organic labelling, clearly stated country of origin, third-party lab testing for heavy metals and pesticides, and a batch expiry date. Standardised extracts offer consistent dosing; bulk dried herbs are more economical for regular use. Avoid very cheap, unlabelled products β€” quality varies enormously.