Which statement made by a patient indicates the need for further teaching about the use of diphenhydramine (Benadryl) for the treatment of allergic rhinitis?

Question

a. "This drug will help reduce nasal itching but not nasal congestion."
b. "I should start taking the antihistamine as soon as my symptoms appear."
c. "I'll need to be careful, because this medication may make me sleepy."
d. "I may develop a dry mouth from this medication."

Answer 1

ANS: B
For treatment of allergic rhinitis, antihistamines, such as diphenhydramine, are most effective when taken prophylactically and are less helpful when the symptoms appear. This statement indicates that further teaching is required.
Diphenhydramine is effective against sneezing, rhinorrhea, and nasal itching. It does not reduce nasal congestion. No further teaching is required.
The most common complaint with antihistamines is sedation, which often occurs with first-generation antihistamines, such as diphenhydramine. No further teaching is required.
Anticholinergic side effects, such as constipation, urinary retention, and dry mouth, commonly occur with first-generation antihistamines. No further teaching is required.