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. When you and a clinician are choosing a dose, you should go for the lowest dose that you think will work. Often, these are prescribed for chest pain called angina. However, all medications come with risks. Some services offer a subscription option where they’ll send your medications every month at a discount. Rarely reported side effects include: an erection that will not go away priapism. Shipping: Discreet, fast shipping is a must.Avanafil (Stendra). Sildenafil (Viagra). Tadalafil (Cialis). Vardenafil. These medicines are called PDE5 inhibitors. They enhance the effects of a chemical the body makes that . Learn More IF YOU CHOOSE BRAND-NAME VIAGRA, MAKE SURE YOU GET THE BRAND NAME Your prescription may have been filled with a generic version instead of . You can purchase medications like birth control, men’s hair loss products, Latisse eyelash growth serum, and ED medications, including Viagra, which are delivered right to your .