A new study has revealed that Alternanthera littoralis, a plant native to Brazil’s coastal regions, could play a key role in the treatment of arthritis. Known as Joseph’s Coat, this plant has been used in folk medicine for centuries to treat inflammation, infections, and parasitic diseases. Recent scientific research, however, now supports its anti-inflammatory and pain-relieving properties, showing its potential as a natural treatment for arthritis.
For years, Alternanthera littoralis has been used in Brazil’s coastal communities for its medicinal properties, but scientific studies on its therapeutic value had been limited. Now, a team of Brazilian researchers from the Federal University of Grande Dourados (UFGD), State University of Campinas (UNICAMP), and São Paulo State University (UNESP) has conducted extensive tests to evaluate its effects.
Their findings, published in the Journal of Ethnopharmacology, show that the plant’s extract has significant anti-inflammatory, analgesic, and anti-arthritic effects. However, the researchers caution that more studies are needed before it can be used clinically.
A Detailed Analysis of the Plant’s Chemical Properties
The research began with an in-depth chemical analysis of the plant to identify the active compounds responsible for its medicinal properties. According to Marcos Salvador, a pharmacist at UNICAMP, the team found that the ethanolic extract of Alternanthera littoralis contains bioactive compounds such as flavonoids, which are known for their antioxidant and anti-inflammatory effects. The researchers focused on the aerial parts of the plant, traditionally used in local remedies, to prepare the extract for testing.
By identifying the plant‘s chemical profile, the team laid the foundation for understanding how these compounds may help reduce inflammation and alleviate pain in arthritis patients. This step was crucial, as it provides the scientific basis needed for further development into potential herbal treatments.

Promising Results in Arthritis Models
Once the plant’s chemical properties were identified, the researchers tested the extract on experimental models of arthritis. Under the guidance of Cândida Kassuya, a pharmacologist at UFGD, the team evaluated the anti-inflammatory effects in animals suffering from induced arthritis. According to the findings, the ethanolic extract of Alternanthera littoralis significantly reduced swelling and improved joint function in laboratory animals.
In the studies published in the Journal of Ethnopharmacology, the plant extract showed effects similar to conventional anti-inflammatory drugs, reducing edema and improving overall joint health. Arielle Cristina Arena, an associate professor at UNESP, explained that the plant’s extract modulated inflammatory mediators, indicating both antioxidant and tissue-protective actions. This promising result suggests that Alternanthera littoralis could be an effective herbal remedy for those suffering from joint inflammation and related conditions like arthritis.
Safety and Next Steps for Clinical Use
Although the results are promising, the researchers caution that further studies are needed before the plant can be used in human treatments. According to the study, the plant extract was well tolerated in animal models, with no fatalities or severe side effects even at high doses. However, mild liver enzyme elevations were observed at higher doses, suggesting that more research is needed to assess the plant’s long-term safety in humans.
The next steps involve additional toxicological studies, clinical trials, and standardization of the extract to ensure its safety and efficacy for therapeutic use. Arielle Cristina Arena emphasized that while the results are exciting, there are regulatory hurdles to overcome before Alternanthera littoralis can be approved for clinical use. Still, the research is part of a broader effort to promote Brazilian biodiversity and traditional knowledge in the field of medicine.
The researchers’ ongoing work highlights the importance of combining traditional healing practices with modern scientific methods, ensuring the safe and rational use of natural products. The plant’s potential as an anti-arthritis treatment could one day provide a natural alternative for patients seeking relief from joint pain and inflammation.
