01Fixed-dose programs
Four fixed-dose programs of 12 to 24 weeks enrolled 1797 men. Erectile dysfunction was attributed to organic causes in 58%, psychogenic in 17%, and mixed in 24%. Sixty-three percent of patients on 25 mg, 74% on 50 mg, and 82% on 100 mg of VIAGRA reported an improvement in their erections. The placebo rate was 24%.
02Before the first tablet
A 4-week stretch with no study drug sat in front of the VIAGRA programs. In that stretch, one-third to one-half of the men had at least one successful intercourse.
Degrees of erectile dysfunction varied.
The 1,797 men who later sat in the four fixed-dose programs answered the principal IIEF questions at a median categorical score of 2. That answer is a few times.
25 mg x 4
Ask the counter to price four 25 mg tablets
25 mg x 4
Not the 50 mg or 100 mg listing
25 mg x 4
Harris Teeter pharmacy page only
25 mg x 4
Giant Eagle pharmacy landing
Generic sildenafil 25 mg, four tablets - the first-dose strength this page covers, checked October 2026. GoodRx lists 25 mg x 10 at $67.14 average retail and $13.53 with a coupon. Ask the counter to price four. The labelled increase to 100 mg is covered in the text above, not in this table. Kaelis Med does not dispense.
03Diabetes program
One program enrolled only men whose erectile dysfunction was attributed to complications of diabetes mellitus (n=268). Patients started on 50 mg and could move the dose to 100 mg or down to 25 mg. Every patient was on 50 mg or 100 mg at the end of the trial. On a global improvement question, 57% of VIAGRA patients reported improved erections versus 10% on placebo. Diary data showed 48% of intercourse attempts successful on VIAGRA versus 12% on placebo.