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Question:

Oncology Radiation treatments and doggie diarrhea ?

Help, what should I do? I’m really heartbroken here. My sweet golden retriever, Max, was recently diagnosed with cancer and started his radiation treatments last week. I was prepared for some side effects, but he’s been having terrible diarrhea ever since we began. It’s honestly worrying me sick. His appetite is a bit off too, which just adds to my anxiety. I'm trying to keep him as comfortable as possible, but watching him go through this is tearing me apart. I want to call the vet again, but they assure me it’s normal to some extent. Has anyone else been through this? Is there anything you found helped? He's my baby, and seeing him like this is so tough. Any advice or comforting words would be appreciated.

Answer:

Thanks for your question. I'm sorry to hear about your pup experiencing diarrhea during oncology radiation treatments. This side effect can happen, as radiation often affects rapidly dividing cells, including those in the gastrointestinal tract. This can lead to irritation and difficulty in absorbing fluids, resulting in diarrhea.



At home, make sure your pup stays well hydrated, as diarrhea can lead to dehydration. Offer small amounts of water frequently. You might also consider feeding a bland diet, like boiled chicken and rice, in small, frequent meals to reduce gastrointestinal stress.



Watch for more serious signs, such as severe or bloody diarrhea, lethargy, loss of appetite, or vomiting. These could indicate a more serious problem or require intervention from your veterinarian.



It’s important to keep an open line of communication with your vet, as they may need to adjust the treatment plan or prescribe medications to help manage these side effects. I recommend booking a video consult with one of our veterinarians at Dial A Vet. They can offer more personalized advice and make sure your pup is as comfortable as possible during their treatment.

Answered by

Louise - Senior Veterinary Nurse, Dial A Vet

June 26, 2025

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The "Ask a Vet" forum on Dial A Vet offers general information and helpful tips on pet health, but it's not a substitute for professional veterinary care. The advice here doesn't create a veterinarian-client-patient relationship, and our vets can't diagnose or treat your pet remotely. For emergencies or specific medical concerns, always contact your local veterinarian immediately. Your pet's health is unique, and decisions should only be made after consulting with a qualified professional. By using this forum, you acknowledge these limitations and agree to seek in-person veterinary advice for all your pet's health needs. View our content guidelines.
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