My dog is tired and won't eat after SMZ for bloody diarrhea. Why?

I'm so sorry to hear that Kennedy is not feeling well. There are a number of potential side effects to SMZ TMP and they can often occur after being on the antibiotics for a period of weeks. I am attaching more information about that below. https://www.veterinarypartner.com/Content.plx?P=A&S=0&C=0&A=617 So, I would recommend contacting your veterinarian and see what they would recommend for Kennedy at this point. They may want to do a recheck exam on Kennedy or maybe even change her antibiotics. Good luck! I hope that was helpful and that Kennedy feels better soon. Thanks for using PetCoach.

Thank you for using Petco Pet Education Center, formerly Petcoach, Sabina! I can see that Oliver has severely bloody stool. This can be caused by imbalance of the bacteria in the gut due to the antibiotics, if they have been given for another condition. This can also be caused by severe parasitic infections, bacterial infections, and conditions such as inflammatory bowel disease. I recommend having Oliver seen by the vet who prescribed the antibiotics, as they may recommend a probiotic to add to his treatment, or discontinue/switch the antibiotics.

I'm sorry to hear that Nicco hasn't been feeling well, but I'm glad to hear that you've already sought veterinary care. It is most commonly recommended to give antibiotics with food since this will lessen the chance of developing an upset stomach with vomiting and diarrhea as a side effect of the antibiotics. In this case, however, Nicco is already having diarrhea and experiencing a loss of appetite. It should be just fine to give him the antibiotics (metronidazole or Flagyl, I assume, given the bloody diarrhea) without food until he is eating normally again. You can also ask your vet about offering Nicco a bland diet of boiled white meat chicken and white rice since he is refusing to eat the Royal Canin gastrointestinal low fat diet. If your veterinarian approves this plan, a typical rule of thumb is to feed 1 cup of a 50:50 chicken/rice mixture for every 10 pounds of body weight per day, divided into 3-4 smaller meals. If Nicco is still refusing to eat, experiencing bloody diarrhea, or begins to vomit by tomorrow, I recommend calling your vet since he may need to be reevaluated with additional diagnostic testing or supportive treatments. I hope this helps and that Nicco feels better soon!

Hi there and thank you for using Petco Pet Education Center, formerly Petcoach to address your concern. If Miko's blood was not tested yesterday, I would certainly recommend having this done to see if there are any changes that are concerning on the blood work. If this is infectious, keep in mind that it may take 3-5 days for the antibiotic to start working and showing improvement. If Miko is worsening, I would suggest taking him back in to your veterinarian for a recheck exam so that the most appropriate diagnostic and treatment recommendations can be made. I hope this helps! Please let me know if you have any other questions or concerns.

I would call your vet to see if it could be a side effect of the medications prescribed. Remember, if no food goes in, there won’t be stool to come out, so I think the biggest problem is not wanting to eat/nausea. Some medications can cause this to happen. Or there could be a second issue causing the poor appetite. You can try bland human foods like boiled chicken breast and cooked white rice to entice Lucky to eat.

Anesthesia can cause these symptoms along with the stress of the stay but that antibiotic can be a factor also. If he is eating and drinking fine with only a small amount of blood at the end of the BM then you can monitor for anything further. If it is diarrhea with blood through out then I would get him seen. You can always try boiled chicken and rice as this is bland and easy to digest. You may need to add canine probiotics while in antibiotics. You may want to talk to your vet about a different one that is easier on the stomach

I hate to hear that Jersey is not feeling well. I do think the continuing diarrhea and regurgitation do indicate that she did not respond like she should have to the antibiotic. No knowing her full history, its hard to say what could be causing it but in puppies, parasites including Giardia are very common. You can also see infections in the GI tract, chronic foreign in bodies, organ dysfunction and food allergy as other causes. If Jersey is acting normal, has a good energy level and normal pink gums, I would recommend to make an appointment with her normal veterinarian to discuss next steps. The doctor may recommend a special diet, bloodwork and/or radiographs to start trying to figure out what is going on. She or he may also recommend special parasite testing depending on where you live. Feed Jersey small amounts of boiled white breast chicken meat and white rice. Make sure she is drinking water and keep her in a cool, comfortable area. If Jersey seems to be uncomfortable, has pale gums, seems weak or in distress, then you should go to the emergency clinic. Use your best judgement. I hope she starts feeling better asap!