A nurse is reinforcing teaching with a client who is newly diagnosed with myasthenia gravis and is to start taking neostigmine.Which of the following instructions should the nurse include in the teaching?.

Treat nasal rhinitis with an over-the-counter antihistamine.

If a medication dose is missed, wait until the next scheduled dose to take the medication.

Expect diaphoresis as a side effect of the neostigmine.

Take the medication 45 minutes before eating.