Is clonidine good medication to treat tics and adhd?

For Tics Primarily. Clonidine is , in fact , a proven agent to control tics. Side effect potential needs to be monitered.It is the the best mediaction to control symptoms of add/adhd however. And it should be a last resort.
No. Until recently, Clonidine was indicated only for adult high blood pressure. It was used "off label" for years for adhd. Now it is approved for that purpose. But it is still a blood pressure medication so it can lower the blood pressure and has many potential cardiac side effects. I think it is better to find the cause and fix a medical problem rather than to just prescribe drugs for symptoms.