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 ...

Cost: Branded Viagra is available starting at $139 per dose. Generic Viagra is ... Both Viagra and sildenafil are available in 25-, 50-, and 100-mg doses. Rex MD has a rating of 4.5 out of 5 ...