Cranberries contain good levels of Vitamin C, Vitamin K and manganese. Vitamin C is highly necessary for good immune function, while Vitamin K plays a vital role in blood clotting and manganese is used in bone formation and metabolism. In humans, cranberries are also touted to have some effect on reducing urinary tract infections (UTIs) due to the presence of compounds called proanthocyanidins which may reduce the ability of bacteria such as E. Coli to adhere to the bladder wall.
In cats, the health benefits of cranberries are less definite. Unlike humans, cats produce enough Vitamin C that they don’t require extra in their diet. The need for Vitamin K supplementation is also rare, and it is usually only given when a deficiency has been caused by certain health conditions, such as liver disease or in cases of rodenticide toxicity.
One small study did find that cranberry extract may help reduce lower urinary tract symptoms in cats with idiopathic cystitis, but the evidence is not currently strong enough to base recommendations on. Excessive cranberry ingestion could actually have the opposite effect and predispose your cat to bladder crystals and stones.












