Viagra is a safe and effective treatment for ED. But as the saying goes, you can have too much of a good thing — and Viagra ...

After further trials, sildenafil citrate was approved by the Food and ... to be taken one time per day in doses between 25 and 100 mg for ED. Your healthcare provider will determine the best ...

But a generic version (and the active ingredient) of this popular medication, sildenafil, is widely available from several drug manufacturers at a fraction of the cost. Here’s more about this ...

Sildenafil citrate is a selective and potent inhibitor of phosphodiesterase type 5 (PDE5). PDE5 is a cyclic guanosine monophosphate (cGMP) specific degrading enzyme that is highly present in the ...