The client who has had a cold for the last week is complaining of congestion and a stuffy nose. The client has been using medicated nasal spray several times a day. Which information should the nurse teach the client about frequent use of nasal spray?

C Nasal sprays have no adverse reactions, unlike over-the-counter oral decongestants. B Nasal sprays such as Afrin cause rebound congestion when used frequently. A Nasal sprays are safe because they are available over the counter. D Nasal sprays must be alternated to help prevent developing a tolerance to the spray.