🌄Mapuche Medicine

Llantén de Agua (Alisma)

Alisma plantago-aquatica

About Llantén de Agua (Alisma)

Llantén de Agua (Alisma) (Alisma plantago-aquatica) is a herb used in the Mapuche Medicine tradition to help with Kidney Support, UTI, Digestive Issues, and Diuretic, among 1 other condition it addresses. The aerial parts and leaves are the parts traditionally used, taken internally.

Botanical background

Alisma plantago-aquatica, also known as European water-plantain, common water-plantain or mad-dog weed, is a perennial flowering plant widespread across most of Europe and Asia from Portugal and Morocco to Japan, Kamchatka and Vietnam. It is also regarded as native in northern and central Africa as far south as Tanzania. It is reportedly naturalized in southern Africa, Australia, New Zealand, Alaska, British Columbia, Washington State and Connecticut. Some sources maintain that the species is widespread across North...

Source: Wikipedia, via iNaturalist

Parts used

Aerial Parts · internalLeaves · internal
🍵

Tea / Infusion

1–3 cups daily
  • Steep 1–2 tsp of dried Llantén de Agua (Alisma) in freshly boiled water for 5–10 minutes.
  • Cover while steeping.
  • Strain and drink.
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Tincture

20–40 drops in water, 2–3× daily
  • Pack dried Llantén de Agua (Alisma) 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.
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Powder / Capsule

500 mg – 1 g, 1–3× daily
  • Grind dried Llantén de Agua (Alisma) into a fine powder.
  • Fill size 00 capsules or stir into smoothies or honey.

Pregnancy, Breastfeeding & Children

No herb-specific pregnancy/child safety research is documented for Llantén de Agua (Alisma) in our references — the guidance below is based on its general effect category, not research on Llantén de Agua (Alisma) itself. Always confirm with a midwife, doctor, or pediatrician.

Pregnancy

Use Caution

This herb has a diuretic (fluid-eliminating) effect. Pregnancy already involves significant fluid/electrolyte shifts, so diuretic herbs are generally used cautiously and in moderation rather than as a routine remedy — this is a general, mechanism-based caution, not herb-specific research.

Breastfeeding

Use Caution

Diuretic herbs are traditionally thought to potentially reduce milk supply through fluid loss — generally used cautiously while establishing or maintaining supply.

Children

Use Caution

Children are more sensitive to fluid and electrolyte shifts — diuretic herbs are generally used cautiously and under guidance.

Contraindications

  • Significant kidney impairment — diuretic herbs may worsen renal function

Warnings

⚠️ Kidney Disease

Some diuretic herbs are contraindicated in those with kidney disease. Consult your doctor if you have impaired kidney function.

⚠️ 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

May have a diuretic effect

Watch for: Diuretic medications and lithium

Additive fluid loss can affect electrolyte balance and change how the body clears lithium.

Where to find in nature

Native region

Various global regions

Climate

Varied

Habitat

Cultivated in traditional medicinal gardens, botanical gardens, and herb farms worldwide

🌿 To see Llantén de Agua (Alisma) 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 Llantén de Agua (Alisma), 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.