Matergam P 300mcg Injection is administered for the purpose of Rh prophylaxis during pregnancyrelated complications It is also authorized for use in individuals with Rh negative blood type who have received transfusions of blood components containing Rh positive red blood cells RBCs Additionally it is approved for the treatment of immune thrombocytopenic purpura a condition characterized by a decrease in the number of circulating platelets resulting in easy bruising For this injection it is crucial that your doctor or nurse administers it to you It is important not to attempt selfadministration The injection is typically administered into the muscle with the upper arm being the common site As part of routine care you will be offered an antiD injection at 28 weeks of pregnancy and within 72 hours of giving birth if your baby has Rh D positive blood type Although rare this medication may cause certain side effects such as fever headache discomfort and tenderness or pain at the injection site If you experience any of these reactions or feel unwell in any way it is important to inform your doctor There may be measures available to prevent or alleviate these effects Prior to using this medication it is important to inform your doctor if you have any issues with blood clotting or if you have recently received or plan to receive a vaccination