Generic oral paste is approved by the FDA for equine gastric ulcers

Officials with the FDA have approved the first generic omeprazole oral paste for the treatment of gastric ulcers and prevention of gastric ulcer recurrence in horses and foals aged 4 weeks and older. The drug product Gastrobim (Bimeda Animal Health) is only available with a veterinarian’s prescription.¹

Gastrobim is a proton pump inhibitor, a class of medications that act by blocking the pumps in the stomach lining that release stomach acid. This generic drug is bioequivalent to the brand-name product Gastrogard (Boehringer Ingelheim), which was approved in 1999. Both contain the same active ingredient (omeprazole).¹

For the treatment of gastric ulcers, Gastrobim should be administered orally once a day for 4 weeks at the recommended dosage of 1.8 mg/lb body weight (4 mg/kg). For the prevention of recurrence of gastric ulcers, treatment should be continued for at least an additional 4 weeks by administering Gastrobim at the recommended daily maintenance dose of 0.9 mg/lb. (2 mg/kg).¹

Reference

FDA approves first generic omeprazole oral paste for gastric ulcers in horses. News release. FDA. April 6, 2026. Accessed April 6, 2026.https://www.fda.gov/animal-veterinary/cvm-updates/fda-approves-first-generic-omeprazole-oral-paste-gastric-ulcers-horses?utm_medium=email&utm_source=govdelivery