It's a bit higher than that. 150 mg for anti-smoking (as Xyban), 300 mg for severe depression or Bipolar 1 (as Wellbutrin) is not uncommon, but with all the others (esp. the Adderall and the mood stabilizer) and coffee to chase, yeah, that would wake up a mummified corpse.
That shrink should have his license pulled.
(That said, Buproprion is a miracle drug. As far as antidepressants go, it's in class all by itself.)