Long-term side effects of omeprazole

Omeprazole, also known as Prilosec, is a medication used in the treatment of internal problems of the stomach, oesophagus and intestines.

The medication is part of a group of drugs called proton pump inhibitors that suppress certain chemicals in the stomach and alleviates many of the symptoms associated with stomach and intestinal problems. As is the case with most medications, there are a number of long-term side effects associated with use.

Before Using

Before beginning treatment with this medication, consult with your doctor if you suffer from any of the following ailments: kidney disease, liver disease, a history of heart attack, previous gastrointestinal problems or high blood pressure. If you are pregnant or breast feeding, consult with your doctor before using Omeprazole as it is currently unknown whether or not this medication will have an adverse effect on a baby.

Long-term Side Effects

As mentioned, there are a number of long-term side effects associated with using this medication. Some of these side effects include depression, hallucinations, sudden confusion, irregular heartbeat, signs of liver damage, severe allergic reaction and extreme stomach pain. While these are considered the most common long-term side effects associated with using Omeprazole, they only affect a small number of users.

Important Safety Information

If you are allergic to Prilosec, omeprazole, or any other similar medications you should not take this drug as it can lead to severe allergic reactions and even death. Omeprazole has been known to negatively react with a number of other medications, so please give your doctor a current list of all medications you are taking before beginning treatment with this drug.


Always use Omeprazole in direct conjunction with your doctor's orders and never in dosages larger than what has been recommended on the label. The medication is administered as a pill and can be taken with or without food. Omeprazole should always be taken with a full glass of water to ensure that it is properly digested by your body. Always store this drug away from sources of moisture and at room temperature.


If you experience any of the above side effects, contact your doctor immediately.

If an overdose is suspected, contact the poison control centre and head directly to the nearest emergency room.

Omeprazole is meant in the treatment of the above ailments only and should never be used recreationally or without a prescription.