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Areas › Focus, starting, and ADHD › Medication and how it works
That threshold is where the pushing and the holding back meet, and it is roughly the level at which these medicines work. None of them decides anything on your behalf. They shift how easily the sum reaches the line, which is a small change made in a great many places at once.
This explains how treatments work. Never start, stop or change a medication because of something you read here.
'so that you may not exceed in the balance' (Quran 55:8). What the cell is doing is weighing, and what a medicine changes is where the weighing lands.
الرحمن
أَلَّا تَطۡغَوۡاْ فِي ٱلۡمِيزَانِ
so that you may not exceed in the balance
Qur’an 55:8read it in the library
Translation: M.A.S. Abdel Haleem, The Qur'an, Oxford University Press, 2004.
The same machinery does not behave identically at every age. A randomised clinical trial comparing young and adult patients found methylphenidate's effects on the dopaminergic system differed between children and adults, raising questions about age dependent and possibly lasting effects. That is one trial looking at one drug. It is enough to show that identical anatomy does not mean an identical response.
Schrantee A, Tamminga HG, Bouziane C, Bottelier MA, Bron EE, Mutsaerts HJ, Zwinderman AH, Groote IR, Rombouts SA, Lindauer RJ, Klein S, Niessen WJ, Opmeer BC, Boer F, Lucassen PJ, Andersen SL, Geurts HM, Reneman L. (2016). Age-Dependent Effects of Methylphenidate on the Human Dopaminergic System in Young vs Adult Patients With Attention-Deficit/Hyperactivity Disorder: A Randomized Clinical Trial.. JAMA psychiatry doi
Strength of evidence: one line of research. A single study, or a theoretical account.
These drugs nudge whether a cell reaches its threshold rather than issuing it instructions.
Saying that medication helps is not the same as saying everyone should be on it. If you have walked in braced for a push, it is fine to say so at the start.
Guanfacine and clonidine arrived here sideways. Both were blood pressure medicines that doctors noticed helped with impulsivity, and the formal approval came long afterwards.
Watch someone on a laboratory stop task and two things move together on medication: the fidgeting drops and the stopping gets more accurate.