s.o.s., si op. sit means si opus sit - if there is a need in Prescription
Similar to s.o.s., si op. sit
IJ, inj - injectio - injection IM - intramuscular with respect to injections IN - intranasal IP - intraperitoneal IVPB - intravenous piggyback L.A.S. - label as such LCD - coal tar solution