An anticyclone – a high-pressure area – named Cerberus (named after the monster from Dante’s Inferno) coming from the south will cause temperatures to rise above 40°C across much of Italy. This comes after a spring and early summer full of storms and floods.
The highest temperature in European history was broken on 11 August 2021, when a temperature of 48.8°C was recorded in Floridia, an Italian town in the Sicilian province of Syracuse. That record may be broken again in the coming days.
Dioralyte is the UK equivalent, I think its available in the EU.