Apatient tells the nurse that he has started to take an over-the-counter (otc antihistamine, diphenhydramine (benadryl. in teaching about side effects, what is the most important for the nurse to tell the patient?

I dont know what to say for this question my friend sorry 

I’m going to guess these are the choices: a) recreational skiing developed in the mid-19th century b) it was originally invented as a way of getting from place to place in snowy regions c) downhill skiing is currently the only common form of the sport d) it mostly evolved from snowshoeing- if that’s the cases then the answer would be c) downhill skiing is currently the only common form of the sport

They need to know because sometimes they have a symptom