Penicillin should never be given orally
because it destroys the cecal bacteria and will kill
most rabbits. However, injectable penicillin (flocillin)
can be used safely.
Any penicillin-based rug can be dangerous for your
rabbit, so try to find a veterinarian who is knowledgeable
about rabbit-safe antibiotics, and who is familiar with
the safer drugs such as Chloramphenicol, Tetracycline,
sulfa-based drugs like Septra or TMS, or enrofloxins
such as Baytril or Cipro.
Never let a veterinarian give your rabbit amoxicillin.
It is a pink liquid antibiotic that smells like bubble
gum. Amoxicillin is very dangerous for rabbits,
and has killed many more than it has helped.
Amoxicilin and ampicillin, lincomycin, erythromycin
are all penicillin derivatives that have an almost 100%
kill rate in rabbits.
Baytril should not be used on a bunny whose bones are
still developing (under 6 months of age). Baytril is
in a class of drugs which can cause problems with cartilage
formation in juvenile animals. Chloramphenicol or TMS
(sulfas) are alternatives.