Contact your doctor. They will be able to determine if it could help you, and be able to inform you of the drawbacks including any potential side effects, and then write you a prescription if it is...
You can get the generic version from dealgeneric.com without a script. It's much cheaper. Or you can get Viagra generic from edpills.net also is very cheap!
At any drug store. But you need a prescription, so you need to see a doctor first. People are so funny! Everyone wants something for nothing. The world just doesn't work that way. There is only 1...