I Recently Switched From Ritalin A ADD Drug I Have

I recently switched from Ritalin a ADD drug I have taken off and since college. J am currently in a. Masters Degree program. The Ritalin stopped working. The doctor switched to Adderral and I have very swollen feet and ankles since the med changes. I have changed to Focalin when this happened a few years back without a problem. My is ARNP she said it is the med change and the swelling is na enough to discontinue the Adderall and request a change to Focalin. Thanks for the advice.