Vigamed (phentolamine mesylate) can help to alleviate sexual dysfunction symptoms such as impotence, and ejaculatory failures. Phentolamine as an alternative to Viagra, Cialis, Levitra and Uprima has met with success with many men suffering from ED. Phentolamine works by directly or indirectly addressing the blood flow to the genitalia via several different biologic pathways. Two physiological systems, the sympathetic and the parasympathetic, play a role in sexual response. Phentolamine controls the erection process through the body's sympathetic system allowing blood to flow into the penis to form an erection. 

Vigamed vs Viagra 

The ability to control erectile performance via the body's sympathetic system can speed up the erection process. Alpha adrenergic blockers, such as Vasomax (phentolamine mesylate), can produce an effect in as little as 15 to 20 minutes.  Viagra works to inhibit the enzyme phosphodiesterase, this process generally takes one hour or more.