Grains de Grenouille, Herbe aux Canards, Lemna minor, Lenteja de Agua, Lenticule Mineure, Lentille d'Eau, Merde de Grenouille, Petite Lentille d'Eau, Ranouillie.


Overview Information

Duckweed is a water plant. The whole fresh plant is used to make medicine.

People use duckweed for swelling (inflammation) of the main airways in the lung (bronchitis), liver disease, rheumatoid arthritis (RA), and gout, but there is no good scientific evidence to support these uses. Duckweed is also eaten as a food protein source.

How does it work?

There isn't enough reliable information available to know how duckweed might work.


Uses & Effectiveness?

Insufficient Evidence for

  • Swelling (inflammation) of the main airways in the lung (bronchitis).
  • Gout.
  • Liver disease.
  • Rheumatoid arthritis (RA).
  • Other conditions.
More evidence is needed to rate the effectiveness of duckweed for these uses.

Side Effects

Side Effects & Safety

When taken by mouth: There isn't enough reliable information available to know if duckweed is safe or what the side effects might be.

Special Precautions & Warnings:

Pregnancy and breast-feeding: There isn't enough reliable information to know if duckweed is safe to use when pregnant or breast-feeding. Stay on the safe side and avoid use.



We currently have no information for DUCKWEED Interactions.



The appropriate dose of duckweed depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for duckweed. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.

View References


  • Sree KS, Dahse HM, Chandran JN, Schneider B, Jahreis G, Appenroth KJ. Duckweed for human nutrition: no cytotoxic and no anti-proliferative effects on human cell lines. Plant Foods Hum Nutr 2019;74(2):223-4. doi: 10.1007/s11130-019-00725-x. View abstract.
  • Zeinstra GG, Somhorst D, Oosterink E, et al. Postprandial amino acid, glucose and insulin responses among healthy adults after a single intake of Lemna minor in comparison with green peas: a randomised trial. J Nutr Sci 2019;8:e28. doi: 10.1017/jns.2019.26. eCollection 2019. View abstract.

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CONDITIONS OF USE AND IMPORTANT INFORMATION: This information is meant to supplement, not replace advice from your doctor or healthcare provider and is not meant to cover all possible uses, precautions, interactions or adverse effects. This information may not fit your specific health circumstances. Never delay or disregard seeking professional medical advice from your doctor or other qualified health care provider because of something you have read on WebMD. You should always speak with your doctor or health care professional before you start, stop, or change any prescribed part of your health care plan or treatment and to determine what course of therapy is right for you.

This copyrighted material is provided by Natural Medicines Comprehensive Database Consumer Version. Information from this source is evidence-based and objective, and without commercial influence. For professional medical information on natural medicines, see Natural Medicines Comprehensive Database Professional Version.
© Therapeutic Research Faculty .