Q. A patient who takes an antihistamine medication diphenhydramine, what would be the expected side effect of the drug?

A
Nervousness
B
Palpitation
C
Dry mouth
D
Tremors
Solution:

Diphenhydramine is an antihistamine mainly used to treat allergies. It is also used for insomnia, symptoms of the common cold, tremor in parkinsonism, and nausea. It is used by mouth, injection into a vein, and injection into a muscle.

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