Whopping cough cases in the United States reached levels in 2025 far higher than before and during the Covid-19 pandemic. But social media posts recommending hydrogen peroxide as a remedy are ...

Medically reviewed by Edmund Khoo, DDS Key Takeaways Gargling with diluted 3% hydrogen peroxide is generally safe.It may help reduce cavities, fight infection, and ease sore throat pain.Avoid high ...