In people with mental illnesses like bipolar disorder and major depressive disorder lithium carbonate has been known to be an effective mood stabilizer for almost a century. While its exact mechanism of action is unknown a number of studies done since the 1940's have shown that lithium is one of the few psychoactive medications that do not produce any clinically observable psychotropic effects (such as improved mood or euphoria) in normal individuals at therapeutic doses; and when given at higher than therapeutic doses over long periods it causes lithium toxicity which has a number of unpleasant effects such as nausea, vomiting, tremors, weight loss, depression and suicidal thoughts. It cannot be used to dose people and make them stay happy and compliant over a long period of time as shown here.
In the yearbook shown during Robbie's interrogation, the caption on the photo credits his name as "Robbie Parton," instead of the correct surname of Paulson.
One of the reviews refers to the actor playing Robbie as Carlo Issac. The actor's name is Oscar Isaac.