Omeprazole is a medication used to treat symptoms of gastroesophageal reflux disease (GERD) or other similar health concerns resulting from excess stomach acid. According to Drugs.com, the medication is effective in reducing the production of acid in the stomach, leading to less frequent acid reflux. Some damage, like ulcers or erosion of the esophagus, can be healed with omeprazole. As with any medication, omeprazole has the risk of side effects.
Less Serious Side Effects
According to Drugs.com, several side effects associated with the use of omeprazole are considered harmless--unless they become persistent or overly bothersome. They include abdominal pain, gas, nausea, vomiting, diarrhea or headache.
Serious Side Effects
Serious side effects should be reported to a doctor and the medication discontinued. More serious possible side effects, as reported by eMedTV.com, include depression, agitation, aggression, hallucinations, confusion or other changes in behavior or mood. Omeprazole can cause inflammation of the pancreas. The website eMedTV.com identifies symptoms of pancreatitis, such as nausea, fever, chills, extreme pain in the upper abdomen or a rapid heartbeat. Other side effects that are sometimes considered to be serious, according to eMedTV.com, may include appetite changes, dry mouth, weight gain, joint pain, drowsiness, hair loss, dry skin, vision changes, ringing in the ears, anemia, urinary tract infections, dry eyes or taste changes. Fewer than 1 percent of patients will experience these side effects, according to eMedTV.com.
Other Concerns
An allergic reaction to omeprazole can be serious, even deadly. Signs, as reported by eMedTV.com, include hives, trouble breathing, swelling of the face, swelling of the tongue, swelling of the lips or swelling of the throat. Patients who experience such symptoms should seek emergency medical attention.
Liver damage is a potential hazard of omeprazole use. Symptoms of this, according to eMedTV.com, include yellowing of the skin or eyes, darkened urine or abdominal pain.
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