The nurse on a medical unit is administering 0900 medications. Which medication should the nurse question administering? 1. Acetylcysteine (Mucomyst), a mucolytic, to a client who is coughing...

The nurse on a medical unit is administering 0900 medications. Which medication should the nurse question administering?

1. Acetylcysteine (Mucomyst), a mucolytic, to a client who is coughing forcefully. 2. Cefazolin (Ancef), an antibiotic, IVPB to a client diagnosed with the flu. 3. Diphenhydramine (Benadryl), an antihistamine, to a client who is congested. 4. Dextromethorphan (Robitussin), an antitussive, to a client who has pneumonia.