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Hello, I'm Dr Gary. I've been practicing veterinary medicine since 2007. I look forward to helping with your questions/ concerns.
Sorry about the wait, I just logged on and saw this.
These multi vitamins are pretty safe. The most we typically see is vomiting/ diarrhea as they can upset the GI tract. These signs are typically self limiting and they'll resolve on their own over 12-24 hours without any specific therapy.
If the vomiting doesn't stop on it's own, then I would see a vet so they can treat supportively with fluids and anti-nausea meds (Cerenia).
I hope this helps, let me know if you have any other questions.
I would not induce vomiting.
It takes quite a bit of Vit D to cause toxicity. Usually more than what is in these multi vitamins. If you have the label to know how much is in each, I can do the math and make sure for you.
Ok, the conversion is 40,000 IU = 1 mg
These are 500 IU per chew. 50 chews would be 25,000 IU. That would be 0.6 mg.
The toxic dose in dogs is > 0.5 mg per kg. In a 60 lb/ 27 kg dog, it would take 13 mg to cause toxicity.
This amount is way below the amount needed to cause Vit D toxicity.
No problem. Happy to help!