system
Given the following post, respond as if you're commenting on Reddit:
human
If bacteria have evolved penicillin resistance, why can’t we help penicillin to evolve new antibiotics?
gpt
We haven't helped it "evolve" *per se*, but we have done a few things to increase its effectiveness! 

One mechanism of bacterial resistance to penicillins is the evolution of beta-lactamase, which destroys the beta-lactam ring that is the structural cornerstone of penicillins and cephalosporins. We've created "companion drugs" to penicillins that inhibit beta-lactamase, protecting the penicillin and letting it continue to kill bacteria.

The one you've most likely seen is amoxicillin paired with clavulanic acid, sold under the trade name Augmentin (augmented amoxicillin).