RETARPEN 1.2 1200000ui powder for injection suspension medication leaflet

J01CE08 • benzathine benzylpenicillin • Antiinfectives for systemic use | Beta-lactam antibacterials, penicillins | Beta-lactamase sensitive penicillins

Benzathine benzylpenicillin is an antibiotic from the penicillin class used to treat bacterial infections caused by susceptible microorganisms. It is a long-acting form of benzylpenicillin, allowing for administration at extended intervals. It is indicated for the treatment of infections such as syphilis, streptococcal pharyngitis, rheumatic fever, and other infections caused by group A beta-hemolytic streptococci.

The medication is administered exclusively intramuscularly, usually in the gluteal muscle, and should not be injected intravenously due to the risk of severe reactions. The dosage and frequency of administration depend on the type and severity of the infection, as well as the patient’s weight.

Adverse effects may include allergic reactions such as skin rashes, itching, hives, or, in rare cases, severe anaphylactic reactions. Other possible side effects include pain or inflammation at the injection site, fever, or gastrointestinal disturbances.

Benzathine benzylpenicillin is contraindicated in patients with hypersensitivity to penicillins or other beta-lactam antibiotics. Its use during pregnancy is generally considered safe but should be administered under medical supervision. It is important for patients to inform their doctor of any history of allergies before administration.