Is It Possible for Medication to Stop Working?

You want to work with a doctor who can help you eliminate that. It's a matter of o finding the right dose and timing the dose so that you take your second dose when the one is wearing off. Crashing should not be a problem. The first time i reached the right dosage of concerta, i cried. I saw thing so clearly. Then the concerta stop working after eight months. Should i do this does happen?