Wendy - I agree with you about the inadequate information provided on 'patient information inserts'.
Suggest your friend ask his doctor for the 'physician's full prescribing information'. If the doctor doesn't have this leaflet available, ask your doctor or pharmacist if you could photocopy this information from their CPS [Compendium of Pharmaceutical Substances]. The CPS is the drug bible in the U.S. and Canada, and is updated regularly. All pharmacists and many doctors keep a CPS in their offices, either in hard copy, CD ROM or via the Internet. Another alternative is to check the manufacturer's Web site - some drug manufacturers have this information for 'Professionals' [M.D.s].
In the U.K., the CPS equivalent is the Vademecum.
I'm not an M.D., but like your friend prefer to have complete information. None of the doctors or pharmacists I've ever dealt with have ever refused to let me photocopy CPS information.