Therefore, pharmacists are discouraged from taking this approach when searching for the PI. Note that generic meds can be counterfeited containing the wrong dosage, no or little or overuse of active ingredient or even addition of dangerous substances , and extra precaution of which e-pharmacy to order this med from is paramount. The role of FDA-approved labeling in medical malpractice litigation. In addition to the PIs for prescription drug products, labels are also provided for OTC products and veterinary drugs. It contains the active ingredient sildenafil citrate, which is an approved substance used in making Viagra [1].CHOOSE BRAND-NAME VIAGRA. The original little blue pill prescribed by doctors for over 20 years. Clinically proven to treat men with erectile dysfunction (ED) Ongoing . US Pharm. ;40(5) A vast amount of practice-related information is available to today’s healthcare practitioner. Specifically, pharmacists have access to drug . Before taking sildenafil, tell your doctor and pharmacist if you are allergic to sildenafil, any other medications, or any of the ingredients in sildenafil tablet or suspension. Ask your .