Penicillin G: Antibiotic for Urinary, Skin & Respiratory Infections

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I am sorry to hear about your guinea pig! You are correct in that we don't normally prescribe Penicillin products in guinea pigs as they can kill the normal healthy bacteria in the GI tract leading to severe GI problems. I would recommend contacting your vet to see if they have other antibiotics available. In the US we most often use a drug called Baytril (enrofloxacin) or Tribrissen (trimethoprim sulfadiazine). Perhaps your vet does have other drug options available.

Hello. Penicillin is a good antibiotic, but it is not always appropriate in every instance. If you trust your cousin, then OK, but the fastest way to get a proper diagnosis & the correct treatment is to see your veterinarian. Hope Gandalf is feeling better soon. Thanks for using Petco Pet Education Center, formerly Petcoach.

Unfortunately, by law it is illegal for the experts at Petco Pet Education Center, formerly Petcoach to give the dose information for any drug without seeing the animal in person first. That's because doing so requires a veterinary client patient relationship which cannot be achieved via an internet forum. In addition, the experts cannot say for certain if a specific drug is safe for Bear. I do not recommend giving him any antibiotics for this infection unless specifically prescribed by a vet. You will need to take him into the vet to discuss using antibiotics. The vet cannot put him down without your permission, so that should not be a worry. Best of luck.

I would not recommend treating your dog without an examination by the veterinarian, to ensure that mastitis is the issue and to ensure an appropriate antibiotic is chosen. We do not normally use penicillin to treat this infection, a first line antibiotic commonly used is Clavamox.

Hi there! I can absolutely understand your concern about your mama dog. I actually would probably not give Pen G to DJ for a few reasons. 1) the hemorrhagic diarrhea may be from abrupt “diet change” (thanks neighbor) and not from any organism. 2) even if it is from an organism, pen g only works on one of the 4 or 5 organisms I can think of that causes bloody diarrhea. 3) If she is close to labor, it is possible that residual antibiotic in the puppies systems or in the milk could cause diarrhea or yeast infections in the puppy. Instead, I would start a bland diet (1/3 plain cooked chicken, 2/3 plain cooked white rice) and start a probiotic such as Purina Forti-flora. If DJ does break with diarrhea, I recommend a prompt visit to your vet who can help you determine if the benefits of an antibiotic like pen-g outweigh the risks in her particular case.

Hello, and thank you for using Petco Pet Education Center, formerly Petcoach. Yes, this is a common antibiotic used in dogs for a variety of infections. I prescribe it routinely in my patients! I recommend giving it according to your vet's recommendations. The specific mg dose will be determined according to your dog's weight, and without that information I can't verify the specific dose - but I do not worry about this medication harming the kidneys. Hope this helps!

Hello. Penicillin can be administered either way. If you do give it in the muscle, be sure to pull back on the plunger before injecting. If you see blood, move to another spot. Never inject penicillin into a vein. Thanks for using Petco Pet Education Center, formerly Petcoach.