Retarpen is a long-acting antibiotic that plays a prominent role in eliminating the damage and effects resulting from sore throat. It helps in an effective and intensive effect in eliminating rheumatic fever. Retarpen is used to treat some heart diseases resulting from rheumatic infections. It also contributes greatly to achieving satisfactory results in treating syphilis, recovering from Beagle's disease, and
Retarpen is also used as an injection to treat Pinta disease.