rykindo extended-release microspheres - Medication Listings

RYKINDO contains risperidone, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. The chemical designation is 3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)piperidin-1-yl] ethyl]-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 2 and its molecular weight is 410.5 g/mol. The structural formula is: Risperidone is practically insoluble in water, freely soluble in methylene chloride, and soluble in methanol and 0.1 N HCl. RYKINDO is provided as a single-dose kit consisting of: a vial containing a white to almost white powder, a pre-filled syringe containing 2 mL of a colorless, clear diluent, a vial adapter, and a needle (a 20 gauge 2-inch needle with needle protection device). The vial contains a white to almost white sterile powder containing risperidone. The powder consists of risperidone, mannitol (5.38 mg/100 mg risperidone), polylactide-co-glycolide (PLGA) 5050 (24.2 mg/100 mg risperidone) and polylactide-co-glycolide (PLGA) 7525 (96.7 mg/100 mg risperidone). The diluent is a sterile, clear, colorless, 2 mL solution. The diluent contains: 1.10 mg/mL citric acid monohydrate, 1.02 mg/mL dibasic sodium phosphate anhydrous, 1 mg/mL polysorbate 80, 9 mg/mL sodium carboxymethyl cellulose, 7.5 mg/mL sodium chloride, 0.54 mg/mL sodium hydroxide, and water. RYKINDO (risperidone) for extended-release injectable suspension, for intramuscular use is, when fully mixed, a white suspension, available in strengths of 25 mg, 37.5 mg, or 50 mg. Chemical Structure