A nurse is reinforcing teaching with a client who has benign prostatic hypertrophy and has a new prescription for finasteride. Which of the following information should the nurse include in the teaching?

Decreased libido is an adverse effect of the medication.

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

Expect to experience a response from the medication in 1 week.

Avoid taking the medication with grapefruit juice.