Ritalin is contraindicated for those experiencing glaucoma, motor tics, and Tourette syndrome. Additionally, it should not be taken if the person requiring treatment has used an MAOI drug within the past two weeks.
If you are undergoing prolonged therapy with this medication, discuss periodic blood tests with your physician. Many sources recommend periodic complete blood counts (CBC), blood differential tests, and platelet counts to ensure there is not too much buildup of this medication in your system.
Ritalin should be used with extreme caution by those experiencing high blood pressure.