Final answer:
A nurse should include all information such as common side effects, dosage, and drug interactions when teaching patients about antihistamine use. These drugs treat allergies by blocking histamine effects and have side effects and possible drug interactions that patients need to be aware of.
Step-by-step explanation:
When providing patient teaching about antihistamine use, a nurse should include D) All of the above information, which encompasses A) common side effects, B) dosage information, and C) drug interactions. Antihistamines are used to treat allergic reactions by blocking histamines from stimulating the itching and swelling of body tissues. It's important that patients are aware of the proper usage, potential side effects like dizziness and dry mouth, and any interactions with other medications they may be taking. Antihistamines can also be used to lessen the symptoms of type III hypersensitivity reactions and are an important treatment for mild allergy symptoms, though for severe reactions like anaphylactic shock, epinephrine is typically the drug of choice.