A patient who is taking a monoamine oxidase inhibitor (MAOI) asks the nurse about the addition of St. John's wort to help with his depression. What would be the best response of the nurse?

"You will need to drink lots of water."

"Did you know that St. John's wort can raise your blood pressure dramatically?"

"That is a great idea. Alternative therapies can be very helpful."

"You will feel better sooner if you include phenylalanine."