Thanks for posting your query.
With the available described details, there appears to be possibility of dyspepsia with decreased gastrointestinal motility.
Dyspepsia is a collection of symptoms consisting of acidic belching, abdominal heaviness and bloating, gargling sound , excessive flatulence.
Dyspepsia could be due to peptic ulcer disease
, bile reflux, and functional in nature.
Peptic ulcer disease could be due to Helicobacter pylori
bacteria abd could manifest in form of nodular gastritis, follicular gastritis
, erosive antritis, gastric and duodenal ulcer
disease and in severe cases, may cause adenocarcinoma of stomach.
You should consult with internal medicine specialist/ gastroenterologist and should go for thorough check up.
You should also go for urea breathe test for H. Pylori.
If Urea breathe test is found to be positive then you have to take complete eradication therapy for H. Pylori bacteria.
Meanwhile, he should also take proton pump
inhibitors along with prokinetics.
Ondensetron is not a prokinetic.
Dr. Mayank Bhargava