Omeprazole Side Effects: 4 Things NHS Patients Should Know (2026)

Hey there, folks! Let's talk about something that's often overlooked but incredibly important: the side effects of a commonly prescribed medication, omeprazole. This proton pump inhibitor (PPI) is a go-to for many, but it's crucial to understand its potential impacts. While it's a powerful tool for managing stomach issues, it's not without its drawbacks.

Omeprazole is typically prescribed for stomach problems like acid reflux, heartburn, and indigestion. It works by reducing the acid in your stomach, providing relief for many. However, like any medication, it comes with a set of side effects that patients should be aware of.

First, let's tackle the common side effects. These include headaches, stomach pain, nausea, and changes in bowel movements - either constipation or diarrhoea. You might also find yourself farting more than usual! The NHS advises that these side effects are generally manageable and shouldn't impact your daily activities, but if they persist or bother you, it's best to seek advice from a healthcare professional.

But here's where it gets controversial: long-term use of omeprazole (a year or more) can increase the risk of more serious side effects. This is a point often missed by many patients and even some healthcare providers. The NHS warns that these serious side effects, though uncommon, can include a vitamin B12 deficiency, weakened bones, allergic reactions, and even a type of lupus that causes rashes and joint pain.

A vitamin B12 deficiency can lead to symptoms like fatigue, dizziness, and muscle issues. Weakened bones can increase the risk of fractures, especially in older adults. Allergic reactions can be life-threatening, causing swelling and breathing difficulties. And the lupus-like syndrome can cause rashes and joint pain, particularly in sun-exposed areas.

The NHS guidance is clear: if you're experiencing any serious side effects while taking omeprazole, call 111 immediately. Remember, this is not an exhaustive list of side effects, so always refer to the leaflet that comes with your medication or check the electronic medicines compendium website for a full list.

So, there you have it! A friendly reminder to always stay informed about the medications we take. What are your thoughts on this? Have you experienced any of these side effects? Feel free to share your experiences and insights in the comments below!

Omeprazole Side Effects: 4 Things NHS Patients Should Know (2026)
Top Articles
Latest Posts
Recommended Articles
Article information

Author: Fr. Dewey Fisher

Last Updated:

Views: 5995

Rating: 4.1 / 5 (42 voted)

Reviews: 89% of readers found this page helpful

Author information

Name: Fr. Dewey Fisher

Birthday: 1993-03-26

Address: 917 Hyun Views, Rogahnmouth, KY 91013-8827

Phone: +5938540192553

Job: Administration Developer

Hobby: Embroidery, Horseback riding, Juggling, Urban exploration, Skiing, Cycling, Handball

Introduction: My name is Fr. Dewey Fisher, I am a powerful, open, faithful, combative, spotless, faithful, fair person who loves writing and wants to share my knowledge and understanding with you.