A nurse is caring for a client who started taking amitriptyline 6 days ago. The client reports that the medication is not helping. Which of the following responses should the nurse make?

"I will inform your provider so she can prescribe a different medication."

"I will ask your provider to increase the dose of the medication."

"You will need to take this medication on an empty stomach for it to be more effective.

"You will need to wait a couple of weeks to feel the therapeutic effect of the medication."