If the patient has to take his diabetes medication for 30 days, how many tablets would the patient need each day?

The doctor has prescribed furosemide. Which drug(s) from the patient’s medication list might this drug interact with, as they are indicated for the same use?

The doctor calls the pharmacy and asks you to add simvastatin 10 mg PO QD, to the medication order. Would this addition interact with any of the other drugs the patient is taking? If so, which drug(s).