My son eight years old takes clonadine .1 mg in the am and at noon and two and one half tabs at bed. He has ARND tremors from drug and alcohol fetally induced parkinsonism and he is ADD ADHD RAD. The side effect is drowsiness and low blood pressure. So they are giving it for the side effect sounds like...... Other than drowsiness and a calming effect, I imagine she shouldn't have any problem if you are really concerned you should check with her Doctor... Good Luck Debbie oh Tenex is also a side kick it supposed to be like the big brother to clonadine it just lasts longer..........