methoxy polyethylene glycol epoetin beta - Medications

Methoxy polyethylene glycol-epoetin beta, is an ESA which differs from erythropoietin through formation of a chemical bond between either the N-terminal amino group or the ε-amino group of any lysine present in erythropoietin, predominantly Lys 52 and Lys 45 , and methoxy polyethylene glycol (PEG) butanoic acid (approximately 30,000 daltons). This results in a total molecular weight of approximately 60,000 daltons. Methoxy polyethylene glycol-epoetin beta is produced in Chinese hamster ovary (CHO) cells using recombinant DNA technology. Mircera is formulated as a sterile, preservative-free protein solution for intravenous or subcutaneous administration. Mircera (methoxy polyethylene glycol-epoetin beta) injection is supplied in prefilled syringes (30 mcg, 50 mcg, 75 mcg, 100 mcg, 120 mcg, 150 mcg, 200 mcg, or 250 mcg in 0.3 mL) and formulated in an aqueous solution containing mannitol (9 mg), methionine (0.447 mg), poloxamer 188 (0.03 mg), sodium phosphate monobasic monohydrate (0.414 mg), and sodium sulfate (1.704 mg). Mircera 360 mcg in 0.6 mL is formulated in an aqueous solution containing mannitol (18 mg), methionine (0.894 mg), poloxamer 188 (0.06 mg), sodium phosphate monobasic monohydrate (0.828 mg), and sodium sulfate (3.408 mg). The solution is clear, colorless to slightly yellowish and the pH is 6.2 ± 0.2.