“Vitamin E is one of the four vitamins (A, D and K are the others) that are fat-soluble for both humans and animals. The amount of vitamin A needed to cause toxic effects is 10–1,000 times the dietary requirements for most species. Thiamine (vitamin B 1) is a water-soluble vitamin and an essential dietary nutrient in dogs and cats.When in the form of thiamine diphosphate (TDP), it has a critical role as a cofactor in carbohydrate metabolism, in the production of nucleotides and of nicotinamide adenine dinucleotide (NADH), and for nervous system function. Vitamin E Overdose and Toxicity. Vitamin E Toxicity in Cats Your cat needs vitamin E more than many other types of pets because the oily tuna so many cats love to eat contains little of the nutrient responsible for normal body functioning, according to the 2006 Textbook of Veterinary Nursing by Victoria Aspinall. Deficiency in Cats. Feline Vitamin Toxicity . Because Vitamin E is an antioxidant, it plays an important role in protecting cells from oxidative damage. Vitamin E deficiency in cats signs. The continued use of very basic or poor quality cat food can affect your cat's health, causing nutritional deficiencies. Vitamin toxicity occurs when the intake of a dietary vitamin exceeds the normal requirement causing adverse clinical signs or disease. Vitamin toxicity in dogs occurs when the intake of a dietary vitamin exceeds the normal requirement causing adverse clinical signs or disease. However, there is a subtle difference between the two:

Deficiencies have been associated with cats feed with a lot of polyunsaturated fatty acids ( PUFAs) since PUFAs being very oxidative in nature, excessive amounts require more consumption of vitamin E by these pets. For example, the daily vitamin E supplemental level for a 13.6 kg (30 lb) dog is 90 IU and for a 2.7 kg (6 lb) cat is 18 IU. The continued use of very basic or poor quality cat food can affect your cat's health, causing nutritional deficiencies. Vitamin E Toxicity In Cats Too little vitamin E is a common health risk to your cat. Vitamin E. Vitamin E is naturally found in plant fats and in the liver and fatty tissue of animals. Deficiency in vitamin A can lead to serious conditions, especially blindness. A deficiency will be signaled by conditions such as muscle weakness, liver hepatitis, heart dysfunction and if the deficiency is severe, expect colon hemorrhages, a condition that is referred as to brown bowel syndrome. Vitamin D poisoning in cats caused by ingestion of a pesticide, a supplement overdose, or accidental consumption, will cause the feline’s calcium levels to drastically increase. Introduction.

The initial clinical signs, occurring anywhere from 8 to 48 hours after ingestion, include depression, weakness, and appetite loss. Few cats require supplementation. Vitamin E is an essential vitamin for cats, which means it must be part of their diet in order for your cat to maintain optimal health. Vitamin A toxicity after consumption of large amounts of fish oil or bear’s liver has been well documented, but it is less likely to occur after acute ingestion of multivitamins. Liver contains very high levels of vitamin A, and when fed routinely to a cat for several months, can cause abnormal bone growth due to excessive vitamin A accumulation in the tissues. When this happens, you will be able to notice various symptoms that appear gradually in your cat, showing that your pet has some kind of nutritional deficiency. When this happens, you will be able to notice various symptoms that appear gradually in your cat, showing that your pet has some kind of nutritional deficiency. Can Vitamin E Supplements be Dangerous? Vitamin E is a group of eight fat soluble compounds that include four tocopherols and four tocotrienols. Vitamin D poisoning occurs when a cat ingests a toxic dose of vitamin D. A common source of vitamin D poisoning is when a cat accidentally ingests rodenticides containing vitamin D. Vitamin D poisoning causes a variety of clinical signs. Oxidative stress can harm cell membranes, cardiovascular health, the immune system, vision, neurological function and fertility. Vitamin E is an essential vitamin for cats, which means it must be part of their diet in order for your cat to maintain optimal health. Vitamin E deficiency, which is rare and usually due to an underlying problem with digesting dietary fat rather than from a diet low in vitamin E, can cause nerve problems. There are no published reports of vitamin E toxicity in dogs, though in cats high levels of dietary vitamin E can result in prolonged bleeding times.