Find patient medical information for Hydrogen peroxide (Peroxyl and others) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings ...

Some simple mouthwash mistakes could lead to unhealthy issues inside your mouth, including an imbalance of beneficial bacteria that can lead to uncomfortable cases of oral thrush.

Hydrogen peroxide that is diluted with water is safe to gargle and use as a mouthwash, as long as you don’t swallow it. Here are ways to use it safely.

Hydrogen peroxide that is diluted with water is safe to gargle and use as a mouthwash, as long as you don’t swallow it. Here are ways to use it safely.

Hydrogen peroxide that is diluted with water is safe to gargle and use as a mouthwash, as long as you don’t swallow it. Here are ways to use it safely.

Hydrogen peroxide that is diluted with water is safe to gargle and use as a mouthwash, as long as you don’t swallow it. Here are ways to use it safely.

Hydrogen peroxide that is diluted with water is safe to gargle and use as a mouthwash, as long as you don’t swallow it. Here are ways to use it safely.

Hydrogen peroxide that is diluted with water is safe to gargle and use as a mouthwash, as long as you don’t swallow it. Here are ways to use it safely.

Hydrogen peroxide that is diluted with water is safe to gargle and use as a mouthwash, as long as you don’t swallow it. Here are ways to use it safely.

Hydrogen peroxide that is diluted with water is safe to gargle and use as a mouthwash, as long as you don’t swallow it. Here are ways to use it safely.