I can currently only answer the question about baitracin zinc. It is related to penicillin in the sense that it has the same function. I am allergic to penicillin, so I usually am prescribed bacitracin zinc as a substitute.
Bacitracin does have a sulfur molecule in its structure. If you are asking if bacitracin is a sulfa drug, then no, it is not a sulfa drug and can be used in patients with sulfa allergies for burns when silver… Full Answer