I have had headaches since taking Concerta recently. I should mention that I occasionally get migraines. Could this be a sign that the medication is not working for me?

If you are experiencing headaches after starting Concerta, it is possible that the medication may not be agreeing with you. Headaches can be a common side effect when first starting this medication, but they may subside as your body adjusts. If the headaches persist or are accompanied by other symptoms like changes in vision or numbness, it is important to speak to your pharmacist or doctor to explore other treatment options.