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Vitamin K for Dogs That Ingested Rat Poison

Vitamin K for Dogs

Not all vitamin K for dogs that ingested rat poison are created equally. While it may be tempting to skip the vet and try to treat your dog at home, consider that, based on the type of poison your dog ingested, he may need a precise type of vitamin K that should be only available from your veterinarian. If your dog ate rat poison, therefore consult with your vet immediately, even if your dog is not exhibiting any symptoms. There are several measures vets can take to minimize absorption and they need to be done right away. Today, we asked veterinarian Dr. Ivana Vukasinovic what type of vitamin K for dogs that ingested rat poisoning is needed.

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Vitamin K for Dogs That Ingested Rat Poison

Answered by Dr. Ivana Vukasinovic

Anticoagulant rodenticides are widely used to control rodents. Anticoagulant rodenticides include two major groups (first and second generation).

The representatives of the first generation are: warfarin, coumatetralyl, chlorophacinone and representatives of the second generation are: difenacoum, brodifacoum, bromadiolone.

Anticoagulant rodenticides act as antagonists of vitamin K and thus indirectly blocking the synthesis of coagulation factors.

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Vitamin K1 is the most used antidote to rodenticide poisoning. Vitamin K is biologically the most active vitamin. Biochemical functions of this vitamin reflect in the mechanism of blood coagulation. It has been found that vitamin K is essential for making blood clothing factors, needed both for the synthesis and activation of the factors as well.

Vitamin K1 is the Answer 

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When the animal is poisoned, rodenticides cause the body to bleed due to the body’s inability to use its own depots of vitamin K.

Supplemental Vitamin K that is used in these types of situation is vitamin K1, known as Phytonadione, aman-made form of naturally occurring vitamin K.

By giving supplemental Vitamin K1 bleeding does not occur, or it occurs on a level that body can compensate. It takes up to 12 hours for new clotting factors to be made, and blood transfusion is suggested in the meantime.

"For rat poisoning, you need to use vitamin K1. It should be only available from your veterinarian, but sometimes they are available from a pharmacy. You will have to call around to find out. Make sure it is Vitamin K1, and not K3. ~Dr. Lee, veterinarian 

About the Author

DVM Ivana Vukasinovic is a veterinarian in Belgrade, capital city of Serbia.


She received her B.S from University of Belgrade in 2012, and her master’s degree from Veterinary University, Belgrade.

Before eventually becoming director of Vetanima Doo, company that sells animal food, medicine and supplements, she have worked in many different fields of sales. After finishing college, she started working as sales person in biggest Serbian bookshop chain, and being passionate about books, she had reached the position of publisher.

After leaving this field, she started working as a veterinary commercialist, and then landing a job as veterinarian at veterinary pharmacy, in the same company in which she is now acting as director.

When she is not working, she is either glued to some fantasy book or cooking for friends. She currently resides in Belgrade with her cat Mile.

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