People using one of the commonly prescribed painkillers in the UK should be cautious as it may cause a rare side effect that feels like a burning sensation in the stomach.

Naproxen, an NSAID similar to ibuprofen and aspirin, is known for its ability to reduce inflammation, swelling, and pain in joints and muscles. It is often recommended in tablet or liquid form for conditions such as rheumatoid arthritis, osteoarthritis, gout, period pain, as well as muscle and bone disorders like back pain, sprains, and strains.

The duration of naproxen treatment varies based on individual conditions, with some needing short-term use and others requiring longer courses. In cases of prolonged use, doctors may prescribe additional medication to mitigate potential side effects.

According to the NHS website, the dosage of naproxen is determined by factors like the reason for use, age, liver and kidney function, and symptom relief. Dosages are typically adjusted for older individuals and those with specific health issues. For children, the dose is calculated based on weight.

Although not everyone experiences side effects, common issues affecting around 1 in 100 people include stomach-related discomfort. If side effects persist despite self-care measures, individuals should consult a healthcare professional. Severe indigestion, heartburn, and stomach pains may indicate ulceration or inflammation, warranting immediate attention.

Individuals with a history of stomach ulcers may be advised against taking naproxen. In such cases, doctors might recommend additional medication to protect the stomach while using naproxen. Symptoms of a stomach ulcer, such as burning or gnawing pain in the stomach, should prompt discontinuation of naproxen and consultation with a healthcare provider.

Suspected side effects from naproxen can be reported through the Yellow Card safety scheme, and individuals are encouraged to seek medical advice if they suspect a stomach ulcer.