Quick Summary

Krameria lappacea, commonly known as Rhatany, is a traditional herbal medicine primarily studied for its potential pharmacological properties. Current clinical evidence is limited, with available data derived mainly from animal models exploring inflammatory and parasitic conditions. Robust human clinical trials to confirm its safety and efficacy are presently lacking.

What is it?

Rhatany refers to the root of Krameria lappacea, a plant traditionally used in herbal medicine. It is known for its astringent properties and has been employed historically in various cultural remedies, though scientific validation remains limited.

Traditional Uses

Traditionally, Rhatany has been used to address a variety of ailments such as oral mucositis, inflammation, and gastrointestinal issues. However, these uses are based on historical practice rather than modern clinical research.

Active Compounds

The active compounds in Krameria lappacea roots include tannins and other polyphenolic constituents known for their antioxidant and astringent properties. These compounds are thought to contribute to the herb’s effects observed in experimental studies.

Potential Benefits with Evidence Levels

  • Coccidiosis-related jejunal inflammation: An animal study (murine model, 2025) demonstrated that an aqueous methanolic extract of K. lappacea roots significantly reduced jejunal inflammation and decreased oocyst shedding in mice infected with Eimeria papillata. This suggests potential anti-inflammatory effects in protozoan infections, though these findings have not been confirmed in humans.

Side Effects

No specific adverse effects have been reported for Krameria lappacea in the currently available animal studies. However, comprehensive human safety data are not available.

Drug Interactions

There is no available evidence regarding drug interactions involving Krameria lappacea. Caution is advised when using alongside other medications due to the lack of interaction studies.

Who Should Avoid It

Due to the absence of safety data, use of Krameria lappacea is not recommended during pregnancy or breastfeeding. Individuals with known allergies to related botanicals or those taking other medications should consult healthcare professionals before use.

Evidence Limitations

The current evidence for Krameria lappacea is limited to a single relevant animal model study, with no human clinical trials identified. Data on pharmacokinetics, human efficacy, safety profiles, adverse effects, drug interactions, and contraindications are lacking. While traditional uses are documented, they lack rigorous clinical validation.

References

  • Abdel-Gaber R, Alamari G, Dkhil MA, El-Ashram S, Al-Hoshani N, Al-Shaebi EM, Al-Quraishy S. Krameria lappacea roots extract to rescue coccidiosis-mediated inflammation in the jejunum of C57BL/6 mice. 2025. https://pubmed.ncbi.nlm.nih.gov/40313946/
  • Espinoza-Hernández FA, Martínez-Medina S, Mata-Torres G, Cabello-Hernández CA, Andrade-Cetto A. Alternative methods for pharmacological research on the action mechanisms of natural products used in the treatment of type 2 diabetes: a systematic review. 2026. https://pubmed.ncbi.nlm.nih.gov/41743124/
  • Büntzel J, Micke O, Büntzel J. How to transfer traditional knowledge about medicinal herbs? or TCM plants: a black box for modern oncologists. 2021. https://pubmed.ncbi.nlm.nih.gov/33037900/
  • Buentzel J, Bauer C, Buentzel J. How to bridge the gap? European medical plants used for treating oral mucositis: on the search for evidence. 2020. https://pubmed.ncbi.nlm.nih.gov/31955287/

Last Reviewed

April 2024

Disclaimer: This information is intended for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or before starting any new treatment.