Frustrated by the high cost of your erectile dysfunction medication? Contact Main Street Pharmacy & Wellness Center today regarding our low-cost E.D. Generic Drug Program. With our program, we offer sildenafil (the active ingredient in Viagra®) and tadalafil (the active ingredient in Cialis®) for as low as $6 per dose (compared with $60+ per dose for brand name E.D. medications). In other words, $80 versus $600 for 10 doses — that is a 90% savings of $540 over brand name E.D. medications.