Most online pharmacies do not prescribe or refill controlled substances, like Adderall, Xanax, or oxycodone. Finally, we checked customer reviews to better understand user experiences with each platform. You should also call your insurance company to see if they cover erectile dysfunction medications. Those with pre-existing conditions should always consult a healthcare provider before taking new medications or supplements. And not all online pharmacies have the capability to safely ship medications that need to be temperature-controlled, such as insulin.Q&A Drug Images What is Viagra? If you have erectile dysfunction (ED), your doctor may recommend that you take Viagra. It’s a prescription drug that’s used in . Generic Viagra (sildenafil): $4 per 25 mg pill, $6 per 50 mg pill, $10 per mg pill; Branded Viagra: $90 per 25 mg, 50 mg, or mg pill; Generic Cialis (tadalafil): . If you’re holding out for a generic version of branded Viagra, you won’t have to wait much longer. Teva Pharmaceuticals plans to release its generic of the “little blue .