Sildenafil gel Tablet is a medication that is used to treat erectile dysfunction and impotence. These pills assist men in achieving firmer and longer erections during their sex lives. Sildenafil is the active ingredient in these tablets. Doctors recommend these medications. The dosage for these tablets varies. These tablets should only be used when absolutely required. Sildenafil gel tablets have an impact that lasts 5 to 6 hours.