Is Nasal irrigation safe?

Nasal irrigation (nasal rinsing) is the passing of water or saline solution through the nasal passages. Nasal irrigation has occurred for many years as it can form part of a religious or traditional cleansing practice. It may also be used to provide relief for colds, congested sinuses, and allergies.Nasal irrigation is generally safe but it is essential to keep the rinsing device clean and use a safe, treated source of water.