I am a bit taken aback by the moderators permitting a question like this on the forum. It is a medical question, to be answered by an appropriate professional for the specific case posed in the question. The opinions of the mass lay audience who lack the proper training are irrelevant to the subject matter.
The entire subject of ADHD has been brought to the lay public as an issue of debate, and this is another version of the abuse committed by mass media. There is hysteria in either direction, whether the non-medical educators insisting that a child be medicated to be allowed in school/yeshiva, to the physicians (usually pediatricians with some, but not enough, training) who rush to prescribe. Others yell about the overmedicating of our children. Some media (including frum publications) have allowed the anti-Ritalin movement the freedom to rant on their pages, while others have allowed medical professionals a voice. All of this is completely irresponsible.
There is a legitimate disorder of ADHD (actually a spectrum of disorders). Anyone presenting such symptoms should be professionally evaluated by someone who has experience and training. Such specialists are in position to make responsible recommendations, prescribe when needed, and to know the difference.
I would refrain from using the CR for guidance on such a matter unless I knew the commenter was a properly trained professional. With the anonymity here, one can never know.