To be completely honest, I do not recommend giving cats multivitamins. Why not? It’s quite simple. If you take a close look at the ingredient list on any complete cat food, you’ll notice that every single complete cat food already contains ample amounts of various vitamins. This product isn’t“lactoferrin”– which can cost up to tens of thousands of yuan per kilogram. Multivitamins are inexpensive; a large bottle of two hundred tablets costs only 9.9 yuan, and they aren’t as volatile as fish oil. Excessively and repeatedly supplementing vitamins will bring nothing but harm.

The Dangers of Excessive Vitamin Supplementation
Many veterinarians are urging cat owners not to abuse vitamin supplements for cats. Long-term, high-dose intake can lead to chronic poisoning and liver damage in cats – and this is not an exaggeration.
Vitamin B: May Cause Digestive Issues
An excess of vitamin B can increase the likelihood of vomiting, diarrhea, and other digestive tract issues in cats.
Vitamin C: May Lead to Stone Formation
Overconsumption of vitamin C can trigger the formation of calcium oxalate kidney stones and urinary stones.
Which Cats Might Need Vitamin Supplementation?
The following scenarios may warrant additional vitamin supplementation for cats:
- Cats with illnesses: such as ringworm, feline stomatitis, or pancreatitis.
- Cats with confirmed vitamin deficiencies: as determined by blood tests.
- Cats on homemade diets: those not consuming complete cat food and thus possibly experiencing nutritional imbalances.
Aside from these cases, healthy cats that eat complete cat food do not require any extra supplementation.
Original article by KPTer, if reproduced, please cite the source: https://www.kaipet.com/en/cats-multivitamins-risks-truth-vitamin-supplementation
Comments(2)
Great reminder! It’s easy to assume more vitamins are better. What’s the biggest misconception you’ve encountered about cat supplements?
@CriticX:Thank you, CriticX, for your thoughtful comment! You’re absolutely right, it’s a common misconception that more vitamins equal better health. The biggest misconception we often encounter is precisely that healthy cats on a complete diet need additional supplementation, when in fact, it can be harmful. Your point highlights the importance of understanding feline nutrition!