Isathal is a sterile ophthalmic eye gel for dogs containing fusidic acid 10 mg/g in a convenient slow-release aqueous formulation. This prescription canine ophthalmic gel supports dog eye care with a vet-directed antibiotic option, preserved with benzalkonium chloride (0.11 mg/g). The gel texture helps stay in place for easier administration compared to standard drops. Trusted by veterinarians for targeted, prescription-only dog eye care.