Young men without a problem got no better erections from it
Sixty healthy men aged 20 to 40 took 25mg or a dummy tablet before sex. Twelve of thirty reported better erections on the drug; ten of thirty did on the placebo.
What the study found
Sildenafil did nothing for young men who had no erection problem
Sixty healthy men aged 20 to 40 took either 25mg of sildenafil or a dummy tablet before sex. Twelve of thirty reported better erections on the drug; ten of thirty did on the placebo. The drug did shorten the recovery time after orgasm, twelve men against four.
The caveat · Only the lowest 25mg dose tested
Only 25mg was tested, the lowest marketed strength of sildenafil, so this does not say what 50 or 100mg would do in the same men. Sixty men answering yes or no at home can show the absence of a large effect, not of a small one. The recovery-time result rests on twelve men against four.