We considered cost, medications available, and whether generic versions were offered to help reduce costs. Most online pharmacies do not prescribe or refill controlled substances, like Adderall, Xanax, or oxycodone. Data shared with Viatris will be aggregated and de-identified; it will be combined with data related to other Savings Offer redemptions and will not identify you Viatris reserves the right to rescind, revoke, or amend this Savings Offer without notice No membership fees. You can see an in-person provider or speak with a doctor virtually. These PDE5 inhibitors may cause headache, flushing, drop in blood pressure, or other adverse effects. Most online providers require a picture of a valid ID, a selfie showing your face, and a recent blood pressure reading taken with a home blood pressure monitor or by a medical provider.Depending on your symptoms and needs, you may be prescribed Viagra, sildenafil, Cialis, tadalafil, Stendra, paroxetine, or a combination of tadalafil and sildenafil, available as . Generic Viagra: Side Effects and Where to Buy It Online in Medically reviewed by Philip Ngo, PharmD — By James Roland and Steph Coelho, CPT and The Healthline . Used for Erectile Dysfunction. Sildenafil (Viagra) is taken by mouth to treat erectile dysfunction (ED). You take it only as needed, typically about an hour before sexual .