This is the BS the drug company wants you to believe. For a drug to have to ability to choose when it wants to block or not makes no chemisitry sense. Abilify is a partial agonist, which means it acts like dopamine or serotonin in some parts of the brain, but not in others. I am not a big fan of it or partial agonists in general. The other one is BuSpar....need I say more?