The Clozapine is available in the form of 25 Yellow Tablets of 100mg. Clozapine is very famous in now-a-days due to its use of optimisation in transdermal metric basically for experimental process and design.it is used for the improvement of bioavailability. The medications are demonstrated for mitigating the risk of recurrent suicidal behaviour in schizophrenia patients or schizoaffective disorder who really are evaluated to be at persistent risk of convolutional suicidal behaviour in a historical and controlled experimental state. The paper provides a brief analysis of Clozapine drugs Usage, Formulation and Evaluation. The drugs were used upon animals at first to test the effects. There are several side effects of Clozapine that includes High fever and also symptoms like flu, Weakness and dizziness, allergy in skin and red spots, Sometimes itching problems in vaginal, in serious problems it can also create breathing problems and worsening cough. This is known as the Second Generation Antipsychotic that helps in balancing the dopamine and serotonin that improves the cognitive functions like mood, thinking and behaviour of an individual. Clozapine is restricted to use however it is used under one particular condition i.e. when the person suffering from Schizophrenia does not respond to other medications, have suicidal incidents or have positive symptoms. Furthermore, considerable clinical study has proven that clozapine seems to be more efficacious than just about any other antipsychotic drug throughout therapeutic interventions and therefore it clearly outperforms some other antipsychotics with in treatment of recurrent schizoaffective disorder.