Palo de arco/Yellow Lapacho

1. Boosts the immune system
Lapacho tea is believed to strengthen the immune system and help the body fight off infections and diseases.
Animal studies suggest that lapacho may increase the activity of natural killer (NK) cells, which are important immune cells. 
2. Reduces inflammation
Lapacho has been shown to possess anti-inflammatory properties in laboratory and animal studies.
It may help reduce inflammation associated with conditions like arthritis and Crohn's disease. 
3. Fights infections
Lapacho may exhibit antimicrobial activity against various bacteria, fungi, and viruses, which may help prevent and combat infections.
Specifically, it has been shown to be effective against Helicobacter pylori bacteria, which causes stomach ulcers.
Laboratory studies showed antibacterial and antifungal activities of Pau d'arco against various microbes, including Staphylococcus aureus and E. coli, according to The University of Texas at El Paso. 
4. May have anticancer properties
Research suggests that lapacho may have anti-proliferative effects against various cancers, including pancreatic, pulmonary, breast, and prostate cancers.
However, high doses of isolated lapachol, one of the active ingredients, may have severe side effects in humans, limiting its potential as a standalone cancer treatment. 
5. Other potential benefits
Some research suggests that lapacho may support cardiovascular health by promoting healthy blood circulation and cholesterol levels.
It may also help support the body's natural detoxification processes and eliminate toxins and waste products.
Lapacho may also have anti-aging effects by increasing the activity of antioxidant enzymes like superoxide dismutase (SOD).