But you should discuss it with your doctor first. That does not mean you need to get a script from him, or tell him anything more than that you are considering it, but I would check with him/her.

I had good luck buying generic from the link below - good prices and product, though I do buy Levitra generic, and not Viagra.

Zig

The Veterans Administration distributes them for whatever your monthly copay is. I pay $9 for what they consider a month's supply, 4 pills. You must be registered with a VA hospital.

You have a few  types of online pharmacies.  There are those that will require a legit prescription. THEY will actually have the best prices for the products and you can be pretty sure you are getting name brand product.  Other sites will allow you to do an online examination if you will where upon completion(and the associated charge for the doctor's services) you will be given a prescription for various products.  So, the per pill price will be higher. Finally, you have a zillion other companies that have companies, that have companies, that have companies that will ship you most of the generic versions of the major ED meds. In general, the prices may be high but its hard to trace where this stuff maybe coming from and it will take weeks for it to get to you. Manufacture is typically India, sometimes South America and Eastern Europe.  Let the buyer beware.