Rx Vitamins Rx Cranberry Urinary Support for Dogs & Cats, 90 caps

Cranberry-Based Urinary Tract Support for Dogs and Cats

Urinary tract infections and recurrent UTIs are a frustrating reality for many pet owners, particularly those with female dogs and cats prone to recurrence. While antibiotics remain the standard treatment for confirmed bacterial UTIs, preventive and maintenance support between episodes — and for pets prone to lower urinary tract signs — is an increasingly important part of veterinary management.

Rx Cranberry by Rx Vitamins for Pets provides concentrated cranberry extract in capsule form, delivering the proanthocyanidin (PAC) compounds responsible for cranberry's recognized effect on urinary tract bacterial adhesion. Manufactured to NASC quality standards by Rx Vitamins for Pets.

Key Ingredient

• Cranberry Fruit Extract (PAC-standardized): Cranberry's primary mechanism of action in urinary tract health is not acidification of urine (a common misconception) but rather the inhibition of type 1 and type P fimbriae on Escherichia coli and other uropathogens — preventing them from adhering to the epithelial lining of the bladder and urethra. This anti-adhesion mechanism reduces the likelihood of bacterial colonization in the lower urinary tract.

Directions for Use

• Cats and small dogs: 1 capsule daily
• Medium to large dogs: 2 capsules daily

Capsules may be opened and contents mixed into food. Administer consistently with food for best results.

Supplement Advisor's Note

The anti-adhesion mechanism of cranberry proanthocyanidins is one of the better-documented mechanisms among urinary supplements — but the key word is "anti-adhesion," not "anti-infection." Cranberry supplementation is a preventive tool, not an antibiotic. It works by making the bladder wall a less hospitable environment for bacteria to establish — not by killing bacteria that are already there. For pets with an active, confirmed UTI, veterinary treatment with antibiotics remains the appropriate primary intervention. Cranberry supplementation is most valuable as a daily maintenance supplement between episodes.

Frequently Asked Questions

Can this replace antibiotics for a UTI?

No. Cranberry extract is a preventive supplement — it reduces the likelihood of bacterial adhesion but does not treat an established infection. A confirmed UTI requires veterinary diagnosis and antibiotic treatment.

Is this safe for long-term daily use?

Yes. Cranberry extract at appropriate doses is safe for ongoing daily supplementation and is commonly used as a long-term preventive in pets with recurrent UTI history.

Does this work for cats with feline idiopathic cystitis (FIC)?

FIC is not caused by bacteria, so cranberry's anti-adhesion mechanism is not the primary tool for FIC management. Stress reduction, diet, and hydration are more central to FIC management. Ask your vet about the most appropriate supplements for FIC specifically.

How long before I notice a difference?

As a preventive supplement, the benefit is seen over time — fewer UTI recurrences rather than an immediate change in symptoms. Give it at least 2–3 months of consistent use before evaluating.