Oregano oil contains compounds such as carvacrol and thymol, which have shown antimicrobial effects in laboratory studies. Uva ursi contains arbutin, which can produce compounds that may suppress certain bacteria in the urinary tract.
But laboratory findings do not mean these herbs are proven cures for infections in people. Their effects depend on the specific cause of the symptoms, the dose, and how the substance is used. They should never be treated as universal treatments for parasites or urinary infections.
Concentrated herbal products can also carry risks. Oregano essential oil is particularly potent and may irritate the digestive system or interact with medications. Excessive or prolonged use of some herbal products may also place unnecessary stress on the liver or other organs.
