A Clinical Study to Evaluate the Bioavailability Between Two Products Containing Paliperidone 100 mg in the Form of a Prolonged Release Suspension for Injection in Patients With Schizophrenia Who Are Already Stabilized in This Treatment

This clinical study will compare the equivalence of two products containing Paliperidone 100 mg in the form of a prolonged release suspension for injection in patients affected by schizophrenia who are already receiving this treatment. Each patient will receive both products (Test and Reference). In total, each patient will receive 10 doses (five doses of the Test product and five doses of the Reference product; one dose every 28 days). Furthermore, the two products (Test and Reference) will be compared with regard to their safety and tolerability.