Educational reference, not medical advice. Talk to a clinician before changing what you take.Read more.

Body part

Stomach

Digestive Organs

The stomach — acid digestion; the site of reflux and ulcers.

Common conditions

Acid reflux (GERD)

Stomach acid flowing back into the oesophagus, causing heartburn and regurgitation.
Nausea & vomiting

The unpleasant feeling of needing to be sick, with or without vomiting — a symptom of many causes, from pregnancy and motion to medication and surgery.