Follow the manufacturer’s directions to use and clean the oral syringe. However, choosing reputable and licensed platforms is important to ensure quality and safety. Rarely reported side effects include: an erection that will not go away priapism. Medicines that block an enzyme called CYP3A4. Egypt Egypt approved Viagra for sale in , but soon afterwards allowed local companies to produce generic versions of the drug, citing the interests of poor people who would not be able to afford Pfizer’s price. Sildenafil Viagra Sildenafil, commonly known by its brand name Viagra, is perhaps the most well-known and widely used best ED meds online. One option is to consider generic versions of brand-name medications.Is branded Viagra available? Is generic Viagra (sildenafil) available? How much does Viagra. In most males,* Viagra works within 1 hour after it’s taken. It’s possible that Viagra can begin working within 30 minutes of being taken. But other times, it may take up to 4 hours to start. Viagra Coupons, Prices, and Savings Card. Generic Names: Sildenafil Citrate. Brand Names: Revatio. Sildenafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED). Learn more about Viagra oral. 1. This is a generic drug. Even if this drug is covered by Medicare or your insurance, we recommend you compare prices.