Cefper contains sulbactam sodium/cefoperazone sodium combination in a 1:1 in terms of free sulbactam and cefoperazone. The 1:1 vial contains sulbactam sodium equivalent to sulbactam 500 mg and cefoperazone sodium equivalent to cefoperazone 500 mg.
Reconstituted solution: Clear, slight yellow to pale amber solution.