My dog keeps vomiting after eating. Is it from flea treatment?

Question

Our lab mix has vomited after eating since this morning. We have had a flea infestation and have been treating with flea shampoos and premithrin sponge bath today. He seems not to be able to keep food down. He throws up about an hour after eating. The vomit contains whole chunks of his food. We have removed the flea collar thinking that may be the cause. Any advice ? We have removed his food and are giving him frequent small drinks of water. Pet's info: Dog | Mixed Breed Large (61lb +) | Male | unneutered | 6 years and 9 months old | 65 lbs

Lauren M. Jones, VMD · Accepted Answer

I'm sorry to hear that Boo hasn't been feeling well! It is possible that the permethrin spray or collars may be related to his vomiting, but other possible causes include a foreign body intestinal obstruction, virus, parasites (particularly tapeworms since they can be transmitted by ingesting infected fleas), among others. At this point, I recommend leaving his flea collar off and bathing Boo in original blue Dawn dish soap to remove any residue remaining from the permethrin sponge bath. Withhold food for the next 12 hours, then gradually offer very small frequent meals of a bland diet of boiled white meat chicken and white rice for a few days. After a few days, gradually mix the bland diet with his normal food over another 5-7 days. If Boo continues to vomit, develops diarrhea, becomes lethargic or stops eating, he will need to go to his vet for further evaluation. Once he vomiting resolves, be sure that Boo is regularly receiving a high quality flea preventative, such as Nexgard, Bravecto, or K9 Advantix II. I hope that he feels better soon!

My dog keeps vomiting after eating. Is it from flea treatment?

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