I have actually heard of Lisinopril but I have no idea what it does for you. And I truly think the doctors that prescribe them sometimes don't either - or they are learning what it is along with you...not to comforting.
You should check out epocrates - They are one of the fastest growing private companies in the country for healthcare professionals. This therefore makes them very important to doctor practices.
This site provides a great and comprehensive web reference and excellent alternative medicine monographs, patient education handouts, pill identifer (more than 3,300 drugs, dosings, pricings and potential drug interactions), pill pictures and 100’s of medical tables and calculations.. Along with it’s major drug guide it also offers more than 130 health pans and medicare part D formularies being a great resource for over 500,000 health care professionals and clinicians.