Quick Summary

Murraya koenigii, commonly known as Curry Leaf, is a medicinal herb traditionally used in various cultures. Scientific research on its clinical efficacy remains limited, with few high-quality human studies available. Preclinical and ethnobotanical data suggest potential roles in antimicrobial effects and management of iron-deficiency anemia; however, clinical evidence is insufficient and inconsistent.

What is it?

Curry Leaf (Murraya koenigii) is a plant native to the Indian subcontinent, widely used as a culinary spice and traditional herb. The leaves are the part most commonly utilized in traditional medicine and cooking. It belongs to the Rutaceae family.

Traditional Uses

Traditionally, curry leaf has been used in various cultures to support general health, aid digestion, and in some cases, for maternal healthcare purposes. It has been employed in ethnomedicine to address conditions such as anemia and infections, although scientific validation for these uses is limited.

Active Compounds

The herb contains multiple bioactive constituents, including alkaloids, flavonoids, and essential oils, which are thought to contribute to its biological activities. Specific compounds responsible for its effects have yet to be fully characterized in clinical contexts.

Potential Benefits with Evidence Levels

  • Iron-Deficiency Anemia (Moderate evidence): One randomized, double-blind clinical trial reported that plant-based iron supplementation derived from Murraya koenigii combined with vitamin C significantly improved hemoglobin levels in adults with iron-deficiency anemia compared to placebo. The intervention was well tolerated, and participants reported improved quality of life. (Patel et al., 2025)
  • Antimicrobial Activity (Preclinical, In Vitro): In vitro studies demonstrated that extracts of Murraya koenigii possess antibacterial activity against multidrug-resistant uropathogenic bacteria, indicating potential antibacterial properties. Clinical translation of these findings remains to be established. (Rath & Padhy, 2014)

Side Effects

No significant adverse effects were reported in the available human clinical trial studying iron-deficiency anemia. Beyond this, robust clinical safety data on side effects are lacking.

Drug Interactions

Currently, there is no direct clinical evidence regarding drug interactions with Curry Leaf. Given that many herbs can modulate cytochrome P450 enzymes and drug transporters, caution is advised when combining it with other medications until further research clarifies specific interactions.

Who Should Avoid It

No specific contraindications have been determined based on clinical evidence. However, due to limited data, pregnant or breastfeeding individuals should avoid using Curry Leaf or use it only under medical supervision. Persons on medication or with health conditions should consult a healthcare professional before use.

Evidence Limitations

Clinical evidence for Murraya koenigii is limited primarily to one moderate-sized randomized trial and various preclinical or ethnobotanical studies. There is a need for larger, high-quality randomized controlled trials to confirm efficacy, establish dosing guidelines, and evaluate long-term safety. Systematic safety and drug interaction data are currently insufficient, and variability in preparations complicates clinical recommendations.

References

  • Patel MN, Patel N, Maheshvari J. Efficacy of Plant-Based Iron and Vitamin C in Adults With Iron Deficiency Anemia: A Randomized, Double-Blind Clinical Study. 2025. https://pubmed.ncbi.nlm.nih.gov/41287676/
  • Rath S, Padhy RN. Monitoring in vitro antibacterial efficacy of 26 Indian spices against multidrug resistant urinary tract infecting bacteria. 2014. https://pubmed.ncbi.nlm.nih.gov/28664089/
  • Omary M, Nguyamu M, Nkoma J, et al. Ethnopharmacological considerations of plants traditionally used by local communities to manage maternal conditions in Tanzania: a scoping review. 2025. https://pubmed.ncbi.nlm.nih.gov/41783344/

Last Reviewed

June 2024

Disclaimer: This information is provided for educational purposes only and is not intended as medical advice. Always consult a qualified healthcare professional before starting any new supplement or herb, especially if you are pregnant, breastfeeding, have a medical condition, or are taking medications.