The client diagnosed with insomnia is scheduled for sleep studies. Which medication should the nurse instruct the client not to take? 1. The ACE inhibitor captopril. 2. The antihistamine...

The client diagnosed with insomnia is scheduled for sleep studies. Which medication should the nurse instruct the client not to take?

1. The ACE inhibitor captopril.

2. The antihistamine diphenhydramine.

3. The loop diuretic furosemide.

4. The thyroid medication levothyroxine.