Why does Tetracycline work better against preventing bacterial growth than penicillin & vancomycin?

Question

Why does Tetracycline work better against preventing bacterial growth than penicillin & vancomycin?

Answer 1

As the above authors have stated, there's a whole bunch of different classes of antibiotics and they all have their own means of killing bacteria or interfering with bacterial function or marginally disrupting their replication.

Tetracycline works in an entirely different way than Penicillin and Vanco, so when an antibiotic is selected to treat an infection, it's based on its mechanism of action, ability to kill sufficiently (sensitivity profile), and other very sophisticated factors.

Bugs are very clever, naughty little critters, so really bright scientists constantly have to figure out ways to keep them from getting their way.

Answer 2

There is no one antibiotic that can be said to "work better against preventing bacterial growth" than others in all situations.  Before ordering an antibiotic, a physician will usually take a culture & sensitivity test to see which antibiotic will be most effective against the particular germs that are making you sick.

Answer 3

I think it depends which bacteria you are referring to.  They each have certain bacteria they are better at fighting or killing.  It is not better--it is better so some.