The drug is an inhaled version of antipsychotic drug loxapine aimed at treating the agitation resulting from schizophrenia and bipolarmania within 10 minutes.
As long as markets display such bipolar disorder and switch from periods of mania to periods of depression, then mean reversion should continue to merit worth as an investment strategy.
Moreover, rates of substance abuse are sky high in folks with bipolar disorder, so you shouldn't look at the question of mania versus drug abuse as being contradictory possibilities.
Bipolar disorder is a mental disorder that presents with recurrent episodes of mood instability of feeling 'high' (mania or hypomania) and 'low' (depression).