We know that, Paliperidone (trade name Invega), also known as 9-hydroxyrisperidone, is a dopamine antagonist and 5-HT2A antagonist of the atypical antipsychotic class of medications. It is developed by Janssen Pharmaceutica. Invega is an extended release formulation of paliperidone that uses the OROS extended release system to allow for once-daily dosing.
Paliperidone palmitate (trade name Invega Sustenna, named Xeplion in Europe and other countries) is a long-acting injectable formulation of paliperidone palmitoyl ester indicated for once-monthly injection after an initial titration period. Paliperidone is used to treat mania and at lower doses as maintenance for bipolar disorder. It is also used for schizophrenia and schizoaffective disorder.
Janssen Pharmaceuticals, Inc. today announced that the U.S. Food and Drug Administration (FDA) approved the supplemental New Drug (sNDAs) for the once-monthly atypical long-acting antipsychotic Invega Sustenna (paliperidone palmitate) to treat schizoaffective disorder as either monotherapy or adjunctive therapy. The symptoms of schizoaffective disorder are complex and, without treatment, disabling. The FDA approved these sNDAs under priority review, which is a designation for drugs that, if approved, would offer significant improvement in the treatment of serious conditions.