The side effects are appalling. They include the onset of neurological disorders. They include diabetes due to weight gain and innumerable minor and not so minor discomforts. Well, there s your answer. Psychiatric drugs are making them feel ill and cause them to see the world with only half a brain.
Drugs are the current historical sequel to long term institutionalization and chains - and lobotomy.
Basically psychiatry is a violent and intrusive way of controlling people who do not conform to other people's expectations - or those who are vulnerable. Remember that treatment is not voluntary once force is used. Mental patients do not have meaningful civil rights. In the UK, often they are not even allowed to vote. Medication is usually administered for a lifetime.