The NHS has issued a warning for individuals taking lansoprazole, a commonly prescribed proton pump inhibitor (PPI) used to reduce stomach acid. Those who have been using the medication for three months or more are advised to be aware of potential side effects, particularly low magnesium levels.
Lansoprazole is one of the most frequently dispensed PPIs in the UK. It is used to treat acid-related conditions such as heartburn and stomach ulcers. The NHS recommends taking it for the shortest possible time at the lowest effective dose to minimise risks.
If taken for more than three months, lansoprazole may cause decreased blood magnesium levels, leading to symptoms such as fatigue, confusion, dizziness, muscle twitches, and irregular heartbeat. Long-term use beyond 12 months may increase the risk of bone fractures, gut infections, and vitamin B12 deficiency.
Patients are advised to have regular check-ups if taking lansoprazole for extended periods. They should also inform their doctor of any other medications, as lansoprazole can interact with drugs like warfarin and digoxin. Antacids should not be taken within two hours of lansoprazole, and St John's wort should be avoided.
Anyone experiencing severe symptoms such as allergic reactions, worsening stomach pain, or signs of low magnesium should seek immediate medical attention. Lifestyle changes, including a balanced diet and avoiding trigger foods, may help manage acid-related symptoms.



