UK health officials warn that common over-the-counter painkillers can increase the risk of sunburn during hot weather [1, 2, 3].

This warning is critical for millions of people who rely on nonsteroidal anti-inflammatory drugs (NSAIDs) for pain management while outdoors. Increased skin sensitivity during a heatwave can lead to severe burns or blistering if users are unaware of the chemical interaction with sunlight.

The Medicines and Healthcare products Regulatory Agency and medical doctors identified ibuprofen and naproxen as medications that may heighten this risk [1, 2]. These drugs can cause photosensitivity, a condition where the skin becomes more sensitive to ultraviolet (UV) rays, which makes the body more prone to burning when exposed to strong sunlight [1, 3].

While some reports focus specifically on ibuprofen, other medical guidance includes naproxen in the list of risky medications [1, 2]. This discrepancy suggests a broader class of NSAIDs may contribute to the effect, although the primary warning emphasizes the most common over-the-counter options.

Health officials said that individuals should continue using these medications only under medical guidance during periods of extreme heat [2]. To mitigate the risk of skin damage, three precautionary rules are recommended for people taking these painkillers [2]. These measures typically include increasing the use of high-SPF sunscreen, wearing protective clothing, and avoiding peak sun hours.

The warning comes as the United Kingdom manages a current heatwave [1, 2]. Officials said that the interaction between the medication and UV radiation can accelerate the onset of sunburn, potentially leading to more severe skin damage than would occur otherwise [2, 3].

Common over-the-counter painkillers such as ibuprofen can increase the risk of sunburn during hot weather.

This warning highlights a pharmacological side effect known as drug-induced photosensitivity. When certain chemicals in NSAIDs enter the bloodstream and reach the skin, they can absorb UV light and trigger a chemical reaction that damages skin cells more rapidly than sunlight alone. For the general public, this means that standard sun protection may be insufficient when taking these specific medications, necessitating a more aggressive approach to UV avoidance.