Does mouth taping work in kids to prevent mouth breathing and snoring?

What the evidence says

Mouth taping means putting tape over a person's lips at night so they can only breathe through their nose. It has become popular on social media as a fix for snoring and mouth breathing. But when researchers actually looked for proof that it works, they found almost nothing done in children.

A 2025 review of mouth taping studies found only ten usable studies in total, and these mainly involved adults with sleep apnea, not kids. One small adult study did find that taping reduced snoring and mild sleep apnea symptoms, but that does not tell us it is safe or useful for a child's airway, which is smaller and still developing.

Here is why this matters for kids: mouth breathing and snoring in children are usually signs of something else going on, like allergies, a stuffy nose, or enlarged tonsils and adenoids blocking the airway. Research on children who mouth-breathe shows these are very common findings alongside snoring and disturbed sleep. Taping a child's mouth shut does not fix these underlying problems, and if the nose is blocked, forcing nose-only breathing could make it harder to breathe, not easier.

Canadian paediatric sources do not have a specific position on mouth taping in kids, which is itself worth noting. This likely reflects that it is a newer social media trend rather than an established treatment.

The better first step for a child who snores or breathes through their mouth is a checkup with a doctor to look for nasal blockage, allergies, or large tonsils and adenoids, rather than trying tape at home.