Informational only — Not medical advice. Always consult a licensed healthcare provider.

Community data Updated 23 hours ago

Indications

Methoxy Polyethylene Glycol-Epoetin Beta is used to treat anemia that comes with chronic kidney disease (CKD). It can be given to patients who are on dialysis and also to those who are not on dialysis.

⚠️ Always consult a registered physician before taking any medicine.

Pharmacology

Methoxy polyethylene glycol-epoetin beta is a chemically synthesized continuous erythropoietin receptor activator. It differs from erythropoietin because an amide bond is built in between methoxy polyethylene glycol butanoic acid and either the N-terminal amino group or the ε amino group of lysine, mainly Lys52 and Lys45. The result is a molecule of approximately 60,000 daltons, and the PEG part of it is approximately 30,000 daltons.

Compared with erythropoietin, methoxy polyethylene glycol-epoetin beta behaves differently at the receptor. It attaches more slowly and comes off faster. Its specific activity is lower in vitro but higher in vivo, and its half-life is longer. These properties are what make a once monthly dosing regimen possible in patients.

Methoxy polyethylene glycol-epoetin beta stimulates erythropoiesis by acting on the erythropoietin receptor on progenitor cells in the bone marrow. The natural hormone erythropoietin is the primary growth factor for erythroid development. The kidney produces it and releases it into the bloodstream in response to hypoxia. When hypoxia occurs, the hormone interacts with erythroid progenitor cells to increase red cell production.

Pregnancy & Breastfeeding

Pregnancy: There isn't enough data on the use of Methoxy Polyethylene Glycol-Epoetin Beta in pregnant women. Animal studies don't point to any direct or indirect harmful effects on pregnancy, on the development of the embryo or fetus, on childbirth, or on development after birth. Even so, take care when prescribing this preparation to pregnant women.

Nursing Mothers: No one knows whether methoxy polyethylene glycol-epoetin beta passes into human breast milk. One animal study did show that it passes into the mother's milk. Whether to continue or stop breast-feeding, or to continue or stop therapy with this preparation, should be decided by weighing two things: the benefit of breast-feeding to the child and the benefit of the therapy to the woman.

⚠️ Talk to your doctor before taking any medicine during pregnancy or while breastfeeding.

Dosage Reference

⚠️ Reference ranges from official sources only. Consult your doctor for personalized dosing.

Adults: Methoxy Polyethylene Glycol-Epoetin Beta is given less often than other erythropoiesis stimulating agents (ESAs), because it stays in the body longer (its elimination half-life is longer). Treatment must be started under the supervision of a healthcare professional. Treatment of anemic patients with chronic kidney disease: the solution can be given subcutaneously (s.c.) or intravenously (i.v.), depending on clinical preference. For a subcutaneous injection you can use the abdomen, arm or thigh. All three sites are equally suitable. Hemoglobin should be checked every two weeks until it is stable, and then periodically. Patients not currently treated with an Erythropoiesis Stimulating Agent: for patients not on dialysis, the aim is to raise hemoglobin to greater than 11 g/dl (6.83 mmol/L). The recommended starting dose is 1.2 microgram/kg body weight once every month as a single subcutaneous injection. Another option is a starting dose of 0.6 microgram/kg body weight once every two weeks as a single IV or SC injection. For patients on dialysis, with the same aim of greater than 11 g/dl (6.83 mmol/L), the recommended starting dose is 0.6 microgram/kg body weight once every two weeks as a single IV or SC injection. The dose may be increased by approximately 25 to 50% of the previous dose if hemoglobin rises by less than 1.0 g/dl (0.621mmol/l) over a month. Further increases of approximately 25 to 50% can be made at monthly intervals until the individual target hemoglobin level is reached. If hemoglobin rises by more than 2 g/dl (1.24 mmol/l) in one month, the dose is to be reduced by approximately 25 to 50%. If hemoglobin goes above 13 g/dl (8.07 mmol/l), therapy is to be interrupted until the level falls below 13 g/dl, and then restarted at approximately 50% of the dose given before. In regions where the upper limit of hemoglobin has been set at 12 g/dl, dose adjustments of 25% should be considered. After a dose interruption, hemoglobin is expected to fall by approximately 0.35 g/dl per week. Patients treated once every two weeks whose hemoglobin is above 11 g/dl (6.83 mmol/l) may be given Methoxy Polyethylene Glycol-Epoetin Beta once monthly, using a dose equal to twice the previous once every two weeks dose. Doses should not be adjusted more often than once a month. Patients currently treated with an Erythropoiesis Stimulating Agent: patients on an ESA can be switched to this medicine once a month or, if wanted, once every two weeks, as a single i.v. or s.c. injection. The starting dose depends on the weekly dose of darbepoetin alfa or epoetin the patient was receiving at the time of the switch, as set out in Tables 1 and 2 below. The first injection should be given at the next scheduled dose of the darbepoetin alfa or epoetin the patient was using before.

Side Effects & Interactions

Side Effects

No side-effect data recorded yet.

Key Interactions

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