Pfizer patented Viagra in 1996. Though the patent has already expired in some parts of the world, the United States patent will not expire until 2019. Viagra is the most copied drug in the world. There are countless unscrupulous online pharmacies selling counterfeit Viagra to unsuspecting customers. Often times, these counterfeit drugs don’t even contain the active ingredient that makes Viagra work. In fact, some counterfeit Viagra can be downright damaging to your health.
Until an FDA-approved generic is available in the United States, purchasing name brand Viagra is your best option. Though it might cost more than the generic formulations, it’s guaranteed to work. When it comes to your health, there are other factors to consider besides cost. Only purchase Viagra from a trusted online pharmacy that sells authentic FDA approved Viagra manufactured for the United States by Pfizer.