A client is taking phenelzine (Nardil) 15 mg PO three times a day. The nurse is about to administer the 1 PM dose when the client tells the nurse about having a throbbing headache. Which of the...

A client is taking phenelzine (Nardil) 15 mg PO three times a day. The nurse is about to administer the 1 PM dose when the client tells the nurse about having a throbbing headache. Which of the following should the nurse do first?

1. Give the client an analgesic prescribed PRN.

2. Call the primary health care provider to report the symptom.

3. Administer the client's next dose of phenelzine.

4. Obtain the client's vital signs.