Paliperidonedrug info

INVEGA SUSTENNA ® contains paliperidone palmitate. The active ingredient, paliperidone, is an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. INVEGA SUSTENNA contains a racemic mixture of (+)- and (-)- paliperidone palmitate. The chemical name is (9 RS )-3-[2-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)piperidin-1-yl]ethyl]-2-methyl-4-oxo-6,7,8,9-tetrahydro-4 H -pyrido[1,2- a ]pyrimadin-9-yl hexadecanoate. Its molecular formula is C 39 H 57 FN 4 O 4 and its molecular weight is 664.89.

The structural formula is: Paliperidone palmitate is very slightly soluble in ethanol and methanol, practically insoluble in polyethylene glycol 400 and propylene glycol, and slightly soluble in ethyl acetate. INVEGA SUSTENNA is available as a white to off-white sterile aqueous extended-release suspension for intramuscular injection in the following dose strengths of paliperidone palmitate (and deliverable volumes) of the single-dose prefilled syringes: 39 mg (0.25 mL), 78 mg (0.5 mL), 117 mg (0.75 mL), 156 mg (1.0 mL), and 234 mg (1.5 mL). The drug product hydrolyzes to the active moiety, paliperidone, resulting in dose strengths of 25 mg, 50 mg, 75 mg, 100 mg, and 150 mg of paliperidone, respectively. The inactive ingredients are polysorbate 20 (12 mg/mL), polyethylene glycol 4000 (30 mg/mL), citric acid monohydrate (5 mg/mL), disodium hydrogen phosphate anhydrous (5 mg/mL), sodium dihydrogen phosphate monohydrate (2.5 mg/mL), sodium hydroxide (2.84 mg/mL used as an alkalizing agent to set pH at 7), and water for injection. INVEGA SUSTENNA is provided in a single-dose prefilled syringe (cyclic-olefin-copolymer) with a plunger stopper and tip cap (bromobutyl rubber). The kit also contains 2 safety needles (a 1 ½-inch 22 gauge safety needle and a 1-inch 23 gauge safety needle). Chemical Structure