Contact the company that makes your medication and ask if it has a patient assistance program to help people who cannot afford the drug that you need. Not all pharmaceutical companies have such programs, but many do. If it does, ask a company rep to send you an application.
Complete the application for the patient assistance program. You'll probably need to ask your doctor to complete and sign a portion of the application verifying that you need the medication in question.
Provide any documentation requested with your completed application. The company might request proof of income or information about any health insurance policies you might have, including Medicare. You'll probably also need to have a written prescription from your doctor.