My diabetic dog threw up after missing insulin. What's wrong?
Updated On September 23rd, 2025
Pet's info: Dog | Mixed Breed | Female
My dog is diabetic and keeps throwing up. They haven't gotten their insulin today. What could be wrong?
5 Answers
Most Helpful Answer
Published on July 24th, 2016
Vomiting can be a sign of elevated glucose levels. If your pet has skipped an insulin treatment then this can very well be the reason why she is now sick. It is best to feed her a meal and get her back on her insulin regimen as soon as possible to avoid prolonged high sugar levels that will continue to make her ill. If she is also refraining from eating and continues to act ill, then it is best to get her seen by a vet right away because she may be ketoacidotic (high level of ketones in the body due to excessively high sugar levels in the bloodstream) and in need of emergency treatment to help stabilize her.
32Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on January 6th, 2018
If he has been vomiting and not eating then I would probably error on the side of no insulin. I think it is safer to have a high glucose for a day or so rather then have a hypoglycemic crisis and end up seizuring. However, if he does not seem back to normal by tomorrow then I would highly encourage you to have him evaluated by a veterinarian as soon as possible. Best of luck and I hope he improves soon. Thank you for using Pet Coach.
2Pet Parents found this answer helpful
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Published on October 16th, 2017
It sounds like Carter has developed a bit of tummy trouble, likely gastroenteritis. It will be making him feel nauseous and not want to eat. If he seems weak or incoordinated or the vomiting continues. take him to the vet now. However if he is otherwise bright I would starve him for 12 hours then try feeding him plain chicken and rice tomorrow. Don't give insulin whilst you aren't feeding him. Tomorrow if he keeps food down give him half his dose, then back to normal. If he is no better tomorrow take him to the vet.
2Pet Parents found this answer helpful
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Published on August 16th, 2017
Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Poor Soda! Having a diabetic pet can be scary! My guess is that he was anxious because he felt nauseous and had to throw up. Everything up to this point you have done well. The only concern now is what will his blood sugar do with no food in his system. His blood sugar will drop the lowest 6 hours after the insulin is given. If you will be home with him all day, I would offer small amounts of food every 2 hours. Offer boiled chicken or hamburger with rice. If he holds it down past 8 hours after giving the insulin this morning hold on additional food until dinner. At dinner, feed normally and if he holds it down give his normal insulin dose. If he continues to vomit today then I would take him to your Vet. Good luck!
2Pet Parents found this answer helpful
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Published on July 9th, 2017
Poor Isabelle! I'm sorry that she's so sick. Unfortunately, this is very concerning - when diabetic pets are vomiting and not eating, they are very prone to develop something called diabetic ketoacidosis, or DKA. This happens because their bodies are not able to handle short periods of minor illness - they begin to break down fat for energy because they can't make use of the glucose in their bloodstream, which quickly leads to serious problems. Because of this, vomiting and not eating for more than 24 hours in any diabetic pet should be considered a life-threatening emergency. I'm afraid this is not something that can be managed at home - she needs to be seen by an emergency vet immediately. In most cases, pets in DKA will need to be hospitalized for IV fluids and supportive care until they are eating again with no vomiting, and their glucose levels are property regulated.
1Pet Parents found this answer helpful
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