Why is it recommended to rinse the mouth after using inhaled corticosteroids?

• A. To reduce risk of oral thrush
• B. To increase absorption
• C. To prevent systemic side effects
• D. To enhance taste

Answer: (A)

Rinsing the mouth after using an inhaled corticosteroid helps prevent oral thrush because some of the medication settles in the mouth and throat. That residual steroid can locally suppress defenses and disrupt the normal oral flora, creating an environment where Candida can grow. By swishing and spitting out water, you remove much of the drug from the oropharynx, reducing the risk of developing a fungal infection.

Rinsing doesn’t increase absorption into the bloodstream, so it isn’t about systemic effects, and it isn’t primarily about taste. It mainly targets this local, preventable adverse effect.