While pepto may help ease the pain associated with ulcers, it is far from a treatment especially with only dosing twice a day. Antacids would need to be dosed every 2-3 hours to be effective at maintaining lower acidity in the stomach to allow ulcers to heal.
Ranitidine or cimetidine may be given to treat ulcers, but they still need to be dosed every 6-8 hours without fail to maintain a constant lower acidity in the stomach. The easiest treatment to actually allow the ulcers to heal is Gastroguard (omeprazole) given once a day, the drawback is that it's expensive.
But unless you actually TREAT the ulcers appropriately they do not heal and they can continue to worsen due to the lifestyle of the horse.
Question: why is an equine dentist diagnosing and prescribing treatment for ulcers? Is he a veterinarian as well?
Licensed Veterinary Technician