If you do, you may save money with online pharmacies that accept yours. They require a prescription for any controlled substance and have a licensed pharmacist to answer questions rather than support staff. Now, the Drug Enforcement Agency DEA has proposed new rules that will require an in-person visit for anything more than a day supply of controlled substances to be filled by an online pharmacy. Most companies have an FAQ or shipping policy page you can reference to learn whether discreet packaging is available. In some patients, the use of VIAGRA with alpha-blockers can lead to a drop in blood pressure or to fainting medicines called HIV protease inhibitors, such as ritonavir Norvir , indinavir sulfate Crixivan , saquinavir Fortovase or Invirase , or atazanavir sulfate Reyataz some types of oral antifungal medicines, such as ketoconazole Nizoral and itraconazole Sporanox some types of antibiotics, such as clarithromycin Biaxin , telithromycin Ketek , or erythromycin other medicines that treat high blood pressure other medicines or treatments for ED VIAGRA contains sildenafil, which is the same medicine found in another drug called REVATIO. Independent online pharmacies operate solely on the Internet, either domestically or internationally. People with heart conditions should never take ED medications without consulting a doctor.Sildenafil (Viagra). Tadalafil (Cialis). Vardenafil. These medicines are called PDE5 inhibitors. They enhance the effects of a chemical the body makes that relaxes . Best Low Cost: GoodRx. Fastest Delivery: Blink Health.: Sesame. Sign Up Now. Key Specs. Cost: Consultation prices vary based on the prescriber; $5 generic . According to price-comparison site , generic Revatio will cost you as little as $ per pill, depending on where you fill your prescription. That’s .