Rhophylac Injection 300mcg

About Rhophylac Injection 300mcg

Rhophylac Injection 300mcg Uses

• Prevention of Rh (D) sensitization in Rh negative pregnant women carrying an Rh positive baby
• Routine antenatal prophylaxis given around the 28th week of pregnancy
• Postpartum prevention within 72 hours if the newborn is confirmed Rh positive
• Prevention after potentially sensitizing events during pregnancy such as miscarriage, threatened abortion, amniocentesis, or abdominal trauma
• Prevention of Rh sensitization after an accidental transfusion of Rh positive blood to an Rh negative person
• Treatment of certain patients with immune thrombocytopenic purpura (ITP) to raise low platelet counts

Rhophylac Injection 300mcg Benefits

• Greatly lowers the risk of hemolytic disease of the newborn in future pregnancies
• Prefilled syringe design allows both intramuscular and intravenous administration
• Faster onset when given intravenously, useful in urgent obstetric situations
• Reduces the need for intensive fetal and neonatal monitoring in later pregnancies
• Can raise platelet counts quickly in ITP patients, lowering bleeding risk

What Experts Say

Rh negative blood type is less common in Pakistan, so many families do not know the risks it carries in pregnancy. Doctors stress that any Rh negative mother carrying an Rh positive baby needs Rhophylac to stop her immune system from forming antibodies against the baby's blood cells, since untreated cases can lead to hemolytic disease of the newborn in a future pregnancy.

A single 300 mcg dose is calculated to neutralize about 15 ml of Rh positive fetal red cells, enough for most normal deliveries. Physicians usually give the first dose around the 28th week of pregnancy and a second dose within 72 hours after delivery if the baby is confirmed Rh positive. A Kleihauer Betke test guides extra dosing when a larger bleed is suspected.

As a plasma derived biologic, Rhophylac should only be given by trained staff in a clinical setting, with cold chain storage confirmed before use. Patients with IgA deficiency or clotting problems need closer monitoring. Since falsified batches have been reported in Pakistan, doctors advise buying it only from licensed pharmacies with a valid prescription.

Drug Class

• Anti-D (Rho(D)) Immunoglobulin, a Human Plasma Derived Biologic

Rhophylac Injection 300mcg formula

• Human Rho(D) Immunoglobulin

Available forms

• Injection

How to use Rhophylac Injection 300mcg?

• Administered only by a doctor or trained healthcare professional in a hospital or clinic setting
• Given by intramuscular or intravenous injection depending on the clinical situation
• Standard antenatal dose is a single 300mcg injection given around the 28th week of pregnancy
• A further 300mcg dose is given within 72 hours after delivery if the newborn is confirmed Rh positive
• Additional doses given after any potentially sensitizing event during pregnancy such as miscarriage, amniocentesis, or abdominal injury
• Dose and timing may be adjusted based on a Kleihauer Betke test result that estimates fetomaternal hemorrhage volume
• For ITP, dose and frequency are set by the treating specialist based on platelet count response

Drug Interactions

• Live Vaccines: Rhophylac can reduce the effectiveness of live virus vaccines such as measles, mumps, rubella, and varicella, so these should be delayed for about 3 months after the injection.
• Other Immunoglobulin Products: Using Rhophylac close to other immunoglobulin or blood products can make it harder to judge its effectiveness or the need for repeat dosing.
• Blood Thinners: Caution is advised in patients on anticoagulants because of the injection route and the product's own rare thrombosis risk.

Risks and warnings

• Not For Rh Positive Individuals: Rhophylac must only be given to Rh negative individuals since it has no role or benefit in Rh positive patients.
• IgA Deficiency: Patients with selective IgA deficiency may have a higher risk of severe allergic or anaphylactic reactions.
• Thrombosis Risk: Use cautiously in patients with clotting risk factors, since immunoglobulin products carry a rare risk of thrombotic events.
• Kidney Function: Immunoglobulin products can rarely affect kidney function, particularly in patients with existing renal disease.
• Blood Derived Product: As a plasma derived biologic, strict screening and manufacturing controls are used, but a small theoretical risk of infection transmission cannot be fully excluded.
• Counterfeit Risk: Buy Rhophylac only from licensed pharmacies, since falsified batches of this product have been identified and recalled by Pakistan's drug regulator.

Rhophylac Injection 300mcg Side Effects

• Headache
• Mild fever or chills
• Nausea or vomiting
• Injection site pain, redness, or swelling
• Joint pain or muscle aches
• Fatigue or general weakness
• Dizziness
• Rare allergic reactions including rash or itching
• Rare severe allergic reaction (anaphylaxis)

Storage Conditions

• Store in a refrigerator between 2°C and 8°C at all times
• Do not freeze the injection, since freezing damages the immunoglobulin protein
• Keep the prefilled syringe in its original carton to protect it from light
• Confirm the cold chain was maintained during transport before accepting delivery from a pharmacy
• Discard the injection if it looks discolored, cloudy, or contains visible particles
• Keep out of reach of children and allow only a healthcare professional to handle administration