🌾Vietnamese Traditional Medicine

Peppermint (Bac Ha)

Mentha piperita

About Peppermint (Bac Ha)

Peppermint (Bac Ha) (Mentha piperita) is a herb used in the Vietnamese Traditional Medicine tradition to help with Headache, Cold, Digestive Issues, and Fever. The leaves and essential oil are the parts traditionally used, used both internally and topically.

Botanical background

Peppermint (Mentha × piperita, also known as Mentha balsamea Willd.) is a hybrid mint, a cross between watermint and spearmint. Indigenous to Europe and the Middle East, the plant is now widespread in cultivation in many regions of the world. It is occasionally found in the wild with its parent species.

Source: Wikipedia, via iNaturalist

Parts used

Leaves · bothEssential Oil · topical
🍵

Tea / Infusion

1–3 cups daily
  • Steep 1–2 tsp of dried Peppermint (Bac Ha) in freshly boiled water for 5–10 minutes.
  • Cover while steeping.
  • Strain and drink.
💧

Tincture

20–40 drops in water, 2–3× daily
  • Pack dried Peppermint (Bac Ha) 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.
💊

Powder / Capsule

500 mg – 1 g, 1–3× daily
  • Grind dried Peppermint (Bac Ha) into a fine powder.
  • Fill size 00 capsules or stir into smoothies or honey.
♨️

Steam Inhalation

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

Pregnancy, Breastfeeding & Children

Pregnancy

Use Caution

Peppermint tea is commonly used for pregnancy-related nausea, but peppermint oil (internal, concentrated) can relax the lower esophageal sphincter and worsen reflux, and some traditions caution against it in early pregnancy due to a mild emmenagogue reputation — tea in normal amounts is generally considered fine.

Breastfeeding

Use Caution

Large amounts or concentrated peppermint oil are traditionally said to reduce milk supply; occasional tea is unlikely to be an issue but is best kept moderate while establishing supply.

Children

Use Caution

Diluted tea is commonly used for children's upset stomach, but peppermint oil/menthol should never be applied to or near the face of infants and toddlers — it can trigger dangerous breathing spasms (laryngospasm).

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

    GERD/reflux medications

    Relaxes the lower oesophageal sphincter and can worsen acid reflux.

    Cyclosporine and other CYP3A4-metabolized drugs

    May alter blood levels of some medications.

    Where to find in nature

    Native region

    Europe, North America (cultivated worldwide)

    Climate

    Temperate

    Habitat

    Moist soil near streams and in wet meadows. A natural hybrid (watermint × spearmint) that spreads vigorously; cultivated extensively in Washington State (USA) and England.

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

    Where to buy

    In store

    • Health food stores (Whole Foods, Natural Grocers, Holland & Barrett, GNC)
    • Naturopathic clinics and integrative medicine practices
    • Specialist herbal apothecaries and herbalist practices
    • Farmers markets with herb vendors

    Online

    iHerb

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

    Mountain Rose Herbs

    Premium bulk dried herbs — 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 — verify brand certifications and check third-party testing

    Etsy

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

    Quality tips

    When buying Peppermint (Bac Ha), 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 — quality varies enormously.