Veterinarian recommended. Advanced Formula ZYMOX Plus Otic with 1% Hydrocortisone is engineered to aid in the management of the toughest ear infections due to resistant organisms, such as those that form complex biofilms as in Pseudomonas and Methicillin-resistant Staphylococcus aureus. Features increased potency of the patented LP3 Enzyme System PLUS four additional biofilm-reducing enzymes formulated to destroy the hard-to-penetrate biofilm. When combined, the results are antibacterial, antifungal, and anti-yeast along with effective biofilm removal. Advanced Formula ZYMOX Otic's advanced enzyme technology makes caring for a pet's ears easy and fear-free with reduced touching of sensitive ears. With 1% hydrocortisone for relief of itching due to minor inflammation, dermatitis, or other minor irritations. For use on any age dog or cat. | Zymox Advance Formula Otic Enzymatic Solution Hydrocortisone 1.0% Anti-itch in White | Size 1.25 oz