viagra is not covered by insurance. you may prescribe 25mg tablets and sig. pt to take it at 25mg first. if it doesn't work, then pt can take 2 tabs for 50mg for it to work. Tho, you can give them 50mg. It's usually okay to start with 50mg.

You want to remind pt to use viagra at least 30min before sexual activity for it to work. Remember PO meds take 30min to become bioavailable.