Question: can omeprazole harm a dog?
Answer: Omeprazole is usually well tolerated by dogs and cats. However, it can sometimes cause GI upset (poor appetite, colic, nausea, vomiting, flatulence, and diarrhea). Use of omeprazole has been associated with urinary tract infections and protein in the urine. Omeprazole may cause increased liver enzymes on blood tests.