A nurse is teaching a client who has benign prostatic hypertrophy (BPH) with a new prescription for finasteride. Which instruction should the nurse include in the teaching?

"When taking this medication, only female clients may have increased growth of breast tissue."

"Prostate specific antigen (PSA) levels will increase while taking this medication."

"Avoid drinking coffee when taking this medication."

"Expect to see a response from the medication within 6 months to 1 year."