Following is false about aripiprazole except ?

Ans. is `d' i.e., It is the drug of choice in treatment of acute mania Atypical antipsychotics --> Olanzapine, risperidone, aripiprazole or quetiapine with or without benzodiazepine is the treatment of choice for acute mania. Aripiprazole Only antipsychotic with D2 agonistic activity. (all others are D2 antagonists). Longest acting It also has 5HT,A agonistic and 5HT2 antagonistic activity - Also known as dopamine-serotinine stabilizer. It is least sedating antipsychotic - can cause insomnia.