Can herbal supplements and over-the-counter medications harm the kidneys?
Yes, certain herbal supplements and over-the-counter (OTC) medications can be harmful to the kidneys. For instance, some Chinese herbal medicines contain aristolochic acid, which is nephrotoxic. OTC medications like high-dose vitamin C can also lead to nephrolithiasis (kidney stones) in susceptible individuals. It is important to consult healthcare providers before using any supplements or OTC medications, especially for those with existing renal conditions.