Why is my dog anxious and puking after taking Previcox medication?

Oh dear! This is a pretty significant overdose, and NSAIDs (non-steroidal anti-inflammatory drugs) like Previcox have a fairly narrow margin of safety in dogs. Overdoses like this can result in severe stomach ulcers, internal bleeding, or even kidney failure. Since she got such a large dose, I would really recommend taking her to the vet right away for treatment. He/she can give her an injection to induce vomiting to help get any remaining pills out of her stomach before they can be absorbed, and may also recommend giving her IV fluids and starting medication to help protect her stomach to try and prevent any problems.

That would be an unusual side effect of Previcox, especially if he just had one dose. If that continues then you should call your vet and let him/her know as your vet may want to check a urine sample.

The main concern with an overdose of this drug is damage to the stomach and intestines. Behavior change is not expected, nor something that has been observed with this drug, so I'm not sure why he is acting skittish. Depending on how big of an overdose this was, he should probably be on some preventative treatment. I recommend contacting your veterinarian about this for further advice. The fact that he's eating/drinking OK and has normal stools are all good signs that he doesn't have any toxic effects at this time. However, signs of toxicity can be delayed a couple of days, so if he is vomiting, not eating, lethargic, or has diarrhea, then he will need to go to the vet. I hope that helps and all is well with Chrome.

I am sorry to hear about your concern for Hallie. It is unlikely with a one time extra dose of her previcox that we will see any major concerns. The most common side effect would be GI upset such as vomiting, decreased appetite, or diarrhea. I would just monitor her for these signs and contact your vet if they occur (you can try feeding a bland diet of plain cooked rice and boiled shredded chicken breast for a day if they occur, if they continue a vet visit is needed). Most likely she will have no symptoms after this one time extra dose.

It is possible that he is feeling nauseous from the Flagyl....that daily dose for a 23 lb dog is often split into two daily doses. It is also possible that he may have a stomach upset/or even an ulcer from the Novox, especially if it was given on an empty stomach. NSAIDs do have the potential of causing vomiting and diarrhea in sensitive dogs. A bland diet of boiled rice and chicken for 3-5 days plus a stomach coating medication called sucralfate daily for a few days +/- an antacid such as famotidine + subcutaneous fluids and bloodwork could be appropriate next steps. I’d recommend returning to your veterinarian or seeking a new vet if you are more comfortable with a new vet. Hopefully the lameness is no longer an issue and with relatively conservative management the vomiting and diarrhea can be resolved as well. Good luck!

Aleve (naproxen) is definitely concerning and has a small margin of safety in dogs. One of the most common problems it causes is gastrointestinal damage - this would explain the vomiting and diarrhea. However, she can also have kidney and/or liver damage with this drug. Considering she is showing signs of toxicity today, it's best to take her to the vet for an evaluation and treatment. There are good treatment options for these cases that will keep Lilita from getting any worse. It's good that she still seems in good spirits, but it's definitely possible that she can get worse over the next couple of days. For this reason, it's best to take her to a vet as soon as possible. For more information, I recommend you click the link below. http://www.petpoisonhelpline.com/poison/nsaids/ I hope that helps and Lilita gets better soon.

Hello, thank you for using Petco Pet Education Center, formerly Petcoach. Great question! No, I would not be worried about this scenario. Typically we don't like to give two different NSAIDs very close together but that is mostly when a dog has been on one long-term and we want to switch to another. Has only having one dose of previcox a few days is not really concerning. The main reason we worry is the potential for gastric ulceration. If you want to be cautious you could give him some omeprazole for a week but it would be best to contact your vet before adding in any other medications. Hope this helps. Best wishes!