I don't know much about medication dosages and for me to tell you what is excessive for another person would be wrong and potentially harmful. So the only thing I can suggest is conculting with that persons prescribing physician or have that person get a second opinion. Everyone is entitled to a second professional oppinion if they question the first professionals treatment plans. In fact alot if not all USA doctors that prescribe ANY form of treatment must give out complaint and second opinion procedures to their clients and in minors cases to the parents or guardians.