Symptoms of a drug that take place in .21% of patients and only when those patients have taken extra doses of the medication are not evidence that a normal prescribed dose would cause any Psychosis. Doctors can easily regulate the amount of the drug that is taken and ensure that the does is not sufficient to cause enough dopamine release to actually cause Psychosis. If I abuse a drug and experience Psychosis it is my own fault and not the fault of the medication. Opioid abuse causes death, and Stimulant abuse causes Psychosis you tell me which is worse...