The best replacement for sulbactam is acido clavulanico.

The best alternatives to sulbactam are rated as following:
★★★★★  acido clavulanico
★  piperacillin tazobactam
★  amoxicillin clavulanate

Your alternative for sulbactam is not listed? Suggest!
Speaking about sulbactam, one probably shouldn't forget about cefoperazone.

Other search terms related to sulbactam and their ratings are:

★★★★★ cefoperazone
★★★ meropenem
You have in mind a companion for sulbactam and it is not yet here? Propose!

Google Trends

Scale is based on the average worldwide traffic of sulbactam in all years. Click on graph for more.
acido clavulanico
piperacillin tazobactam