Can my dog eat multivitamins?
No.
One tablet is rarely a problem, but a chewed bottle can be — the danger is iron, vitamin D, or xylitol in sugar-free gummies.
Already ate it?
If they ate itOne tablet: watch at home. A few: call your vet today with the bottle. A whole bottle, or any sugar-free gummy: go to a vet now.
Watch forVomiting and diarrhoea within hours (iron); weakness or collapse within 30 minutes (xylitol); thirst, heavy peeing and vomiting 12 to 48 hours later (vitamin D).
Thinking of giving it?
Why not even a littleIron: signs from about 20 mg of elemental iron per kg. Vitamin D3: signs from about 0.1 mg (4,000 IU) per kg. Xylitol: blood sugar crashes from about 100 mg per kg. Read the label against your dog's weight.
WhyMost vitamins are harmless in an overdose. Iron, vitamin D and xylitol are not, and prenatal and 'bone' formulas carry the most iron and vitamin D.
Where this comes from. Merck Veterinary Manual — Toxicoses in Animals from Human Multivitamins and Supplements; Merck Veterinary Manual — Cholecalciferol (Vitamin D3) Poisoning in Animals; Albretsen J., Toxicology Brief — The toxicity of iron (Veterinary Medicine).
Reviewed: 20 October 2026
A guide, not a diagnosis. If your dog seems unwell, call your vet.
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