I took lithium for <redacted tendancy> it got to my kidneys never thought of more generally microdosing lithium. Interesting. Full dose yeah flat and sleepy. Not sure it was the reason for flat out brain rot. (Other factors were available maybe just getting older.) Full dose needs blood tests as overdose weirdly bad. From <relative> due to dehydration / holiday in the sun looked like almost drunk but not drinking slopy etc. Slightly clingy desparate for interaction with strangers. <Other factors could have been available>. Not informed of damage relative seemed to recover ok. <Nationalised medical system>.
There was a doing something about the slightly ill, or healthy at the edge of the overton window, taking away from the extreme cases getting treatment or attention angle. The sceptic might say there is no clear useful additional treatment or attention!
Extreme autism may different. Treated more by Labour rather than chemicals.