Amid raging wildfires, France is preparing for its fourth major heatwave of the year as extreme temperatures and bone-dry conditions in the southwest intensify the challenges faced by crews battling a massive wildfire in the Bordeaux region.Temperatures in Bordeaux were expected to reach 33°C (91°F) during the day, around 7°C above the average high recorded between 1961 and 1990, according to the Reuters Climate Monitor."The situation we are dealing with today is the most severe we have ever recorded, the toughest since the Second World War," said President Emmanuel Macron.Firefighters managed to contain the blaze overnight, but the situation remained difficult, with reports suggesting the wildfire threat could continue until November.France is experiencing an unprecedented wildfire season, with the area affected by fires already surpassing the previous record set in 2022. Around 4000 more people were evacuated from tourist sites along the Atlantic coast, following the evacuation of more than 250,000 people earlier.UK Faces Fourth Heatwave As Temperatures RiseAlso read: Europe Swelters Under Heatwave And Wildfires; 360,000+ Evacuated: What Are The Health Risks?Meanwhile, the UK is also preparing for its fourth heatwave of the summer, with temperatures expected to climb to 34°C in parts of the country later this week.Several amber and yellow heat alerts have been issued as the UK Health Security Agency (UKHSA) warned that rising temperatures could increase health risks, particularly for vulnerable groups.Temperatures are forecast to reach 29°C in southeast England on Tuesday before rising further to 34°C on Wednesday.Dry Conditions Raise Wildfire And Drought ConcernsRead More: Could Wildfire Smoke Trigger Your Migraine? Latest Study Finds A Strong LinkThe heatwave follows an exceptionally hot and dry June, which has left some of the UK’s driest regions without rainfall for weeks. Forecasters have warned that parts of southern and southeast England could face “exceptionally severe” wildfire conditions this week due to extreme heat and prolonged dry weather.Parts of Wales have already been placed under drought status, while large areas of England remain under “prolonged dry weather” status — the final stage before a drought declaration.What Happens When Medicines Get Too Hot?According to the Medicines and Healthcare products Regulatory Agency (MHRA), high temperatures can affect medicines and reduce how well they work.Rising temperatures can affect how some medicines work in the body, posing potential risks for people with long-term health conditions. Experts say simple precautions can help prevent heat-related complications.Medicines that do not require refrigeration, including tablets, inhalers, hormone replacement therapy (HRT) patches, and epinephrine, should generally be stored in a cool, dry place at room temperature, ideally between 15°C and 25°C. This is because high temperatures can reduce the potency and effectiveness of the active ingredients in medicines.Alison Cave, Chief Safety Officer at the MHRA, said that when there’s a heatwave, medicines left in the heat – in cars, bags, or on sunny windowsills – might not work properly when you need them.“Some medicines can also make you more likely to burn in the sun, feel dizzy, or get dehydrated, especially if you’re taking diuretics or have a condition like asthma, heart disease, or diabetes.”To stay safe during hot weather, the MHRA advised people to:Store medicines in a cool, dry place away from direct sunlight, especially when travelling or spending time outdoors.Stay hydrated, recognise signs of heat-related illness, and listen to your body.Take extra precautions in the sun if medicines increase sensitivity to sunlight and raise the risk of burns.