Some platforms have a digital pharmacy that ships the medication to your home, while others send an electronic prescription to your local pharmacy. Refills: See if you can set up automatic refills or order as needed. If you experience chest pain, dizziness, or nausea during sex, seek immediate medical help. However, others work on a cash-pay basis and don’t partner with insurance companies. If it is not treated right away, priapism can permanently damage your penis sudden vision loss in one or both eyes.Make sure you get the right prescription and dose. When you order medicines and when you receive them in the mail, make sure they’re the exact dose and type prescribed by . Viagra is a brand-name prescription drug that’s approved to treat erectile dysfunction (ED). With ED, you’re unable to have or maintain an erection. Viagra is approved for this use . Consumer Reports Best Buy Drugs shares how you might be able to get generic Viagra, known as sildenafil, at a much lower price.