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
comp. - compound cr., crm - cream CST - Continue same treatment D.A.W. - dispense as written i.e., no generic substitution d.t.d. - dentur tales doses - give of such doses D.W. - distilled water D5NS - dextrose 5% in normal saline 0.9%