... anger) 10 yr old son taking metadate cd and tenex(has adhd and anxiety too) i have heard that some of these meds are NOT good for bipolar disorder or bad w/each other.my son has been out of control,rude,defiant,hurtful w/words,sometimes almost violent-especially in the a.m. before meds kick in-these behaviors are increasing the last few months and i have now notice some twitching(turns head far to his right and makes a grimace)several times as he speaks to you. i am afraid is is meds interaction-help!