Notifications can be managed in browser preferences.Jump to contentIndependentSwipe for next articleIndependent Bulletin homepageDownload our appAllNewsSportCultureLifestyleRosie SlaterWednesday 27 May 2026 15:03 BSTPeople at Bournemouth Beach enjoy the sun on the bank holiday MondayThe Medicines and Healthcare products Regulatory Agency (MHRA) has issued a warning that high temperatures can compromise the effectiveness of medicines and impact how the body responds to them, particularly for individuals managing long-term conditions.Overheating: Many medicines require storage below 25°C, as heat can degrade active ingredients in various forms, including tablets, inhalers, insulin, and EpiPens, rendering them ineffective; specific care is also needed for medicines that must be kept refrigerated.Dehydration: Certain medications, such as diuretics, blood pressure medicines, some diabetes treatments (such as insulin and metformin), antipsychotics, and stimulants, can heighten the risk of dehydration or make it harder for the body to regulate its temperature during hot weather.Sunburn: Some common medicines, including certain antibiotics, diuretics, antidepressants, and notably methotrexate, can significantly increase skin sensitivity to the sun, potentially leading to severe reactions like painful rashes or blistering.Medicine care: The MHRA advises people to store medicines in the coolest part of the house, avoid leaving them in hot vehicles or bags, read patient information leaflets for storage instructions and side effects, and consult a pharmacist or doctor if they notice changes in their medicine's appearance, effectiveness, or their own well-being.Thank you for registeringPlease refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged in