General Info:

Clozaril is given to help people with severe schizophrenia who have failed to respond to standard treatments. Clozaril is not a cure, but it can help some people return to more normal lives.
Even though it does not produce some of the disturbing side effects of other antipsychotic medications, Clozaril may cause agranulocytosis, a potentially lethal disorder of the white blood cells. Due to the risk of agranulocytosis, anyone who takes Clozaril is required to have a blood test once a week for the first 6 months.