Chaulmoogra

Chaulmoogra, also known as Hydnocarpus wightiana, is a tropical tree from the family Achariaceae, which is native primarily to India, Sri Lanka, and Southeast Asia. The medicinal significance of this plant lies mainly in its oil-rich seeds, from which the well-known chaulmoogra oil is obtained. For centuries, this oil was a central remedy in Ayurvedic and traditional Chinese medicine – however, it became particularly famous in the 19th and early 20th centuries through its use in the treatment of leprosy.

What benefits does Chaulmoogra offer?

Chaulmoogra is used in naturopathy primarily for its oil, which is said to offer a wide range of therapeutic applications. Various studies have examined the effects of the plant and were able to partially substantiate the effects attributed to its active compounds. As always, however, the results of these studies should be viewed critically, since not all findings are readily transferable. Below you will find the results of the studies as well as the traditional applications:

  • Antibacterial effect: Chaulmoogra oil contains special fatty acids (hydnocarpic acid, chaulmoogric acid) that are effective against mycobacteria – particularly against Mycobacterium leprae, the pathogen that causes leprosy (1, 2).
  • Antioxidant effect: Studies have shown that the plant's active compounds exhibit antioxidant potential (2,3)
  • Antidiabetic effect: Various investigations suggest that the plant can have a positive effect on problems with blood sugar regulation (3)
  • Skin conditions and wound healing: In naturopathy, the oil is used externally for chronic skin conditions such as eczema, psoriasis, and skin infections. Studies also suggest that active compounds of the plant can have a positive effect on wound healing (3,4)
  • Anti-inflammatory: Chaulmoogra is traditionally used for joint pain, abscesses, and ulcers. Scientific investigations support the statement that the plant can potentially have an anti-inflammatory effect (3,4).

How does Chaulmoogra work?

The effects attributed to Chaulmoogra, as well as the effects observed in studies, can be traced back to several bioactive substances.Hydnocarpic and chaulmoogric acid, flavonoids, alkaloids, and phytosterols. This combination of different active compounds is presumably the reason why Chaulmoogra counts as a versatile substance in traditional skin healing (3).

Side effects and risks

Although chaulmoogra oil has long been used therapeutically, the following aspects should be taken into account, especially because more studies are needed in order to be able to make conclusive statements about its effects:

  • Skin reactions: With sensitive skin, irritation or allergic reactions may occur. A tolerance test is recommended.
  • Internal use: Oral intake should only take place under expert supervision, since high doses can have toxic effects.
  • Pregnancy and breastfeeding: Due to possible side effects, chaulmoogra oil should be avoided during these periods.

Conclusion

Chaulmoogra is a medicinal plant rich in tradition, which is used for skin conditions and bacterial infections. Its special fatty acid composition makes it unique – above all in the history of leprosy treatment. When used properly, Chaulmoogra could be a valuable addition to natural skin healing. However, it should only be used under the supervision of a medically trained professional.

Sources:

  1. Port, B. C. B., Argenta, D. F., Porto, D. S., Rauber, G. S., Zuchi, I. D. P., Silva, I. T., & Caon, T. (2023). Chaulmoogra oil-based nanoemulsions for leprosy treatment: A case study with the dapsone. Journal of Drug Delivery Science and Technology, 88, 104955. https://doi.org/10.1016/j.jddst.2023.104955
  2. Kathiresan, N., Harini, K., Veera Ravi, A., Veerabharathi, P., Pandi, S., Ramesh, M., Awere, C. O., & Langeswaran, K. (2024). Deciphering the potential therapeutic effects of Hydnocarpus wightianus seed extracts using in vitro and in silico approaches. Microbial Pathogenesis, 194, 106798. https://doi.org/10.1016/j.micpath.2024.106798
  3. Kishan K G, Shekshavali. T, Kuppast I.J, Kishan Kumar MA, Jeevanagouda Patil. A Review on Hydnocarpus wightiana. Res. J. Pharmacology & Pharmacodynamics.2016; 8(4): 168-170. doi: 10.5958/2321-5836.2016.00030.6
  4. Shantha Kumar, Thomas Oommen, Mallikarjun Rao, Chintalapati Venkata Narashima Raju. Effect of oil of Hydnocarpus on wound healing. Int J Lepr Other Mycobact Dis., 1999; 67(2): 154-158.