See this link. It is a card you can download. Some pharmacies don't take it, but alot do, and I've known people who have a $150 prescription that they paid $50 for. Depends on the medication and the pharmacy.
Just download it, put it in your purse/wallet. Next time you have to get a prescription show it to the pharmacist. they can look into the computer and often give you an instant discount of 10-50% or more.
You just need one card and you can use it over and over again.
Free Drug Card - Discount Drug Card - Prescription Drug Card - Prescription Assistance