Metformin<\/a> is also prescribed to people who are struggling with their fertility due to polycystic ovary syndrome (PCOS).<\/p>\n But now a warning has been issued to people in the UK<\/a> who use the medication ahead of predictions about the weather<\/a>.<\/p>\n This is because the UK has been forecast to experience a heatwave over the coming days.<\/p>\n Like a number of medications, metformin can make patients using it more susceptible to the effects of extreme heat.<\/p>\n The Met Office has issued an amber warning, beginning on June 22 and running through until June 25 covering the South of England and parts of Wales.<\/p>\n In the warning, the office warned that people who are ‘vulnerable’ to heat should take extra precautions to mitigate the effects of the heat.<\/p>\n Metformin is one of a few common medications which can increase vulnerability to extreme heat, with another also being beta blockers, which are taken by millions across the UK.<\/p>\n Studies have indicated that metformin can increase the risk of dehydration, as well as making earlier signs more difficult to spot.<\/p>\n The Medicines and Healthcare products Regulatory Agency <\/a>told The Mirror<\/a>: \u201cBlood pressure medicines such as ACE inhibitors, beta-blockers, or calcium channel blockers can also make it harder for your body to regulate temperature, especially during sudden hot spells.\u201d<\/p>\n![\"The](\"https:\/\/www.newsbeep.com\/us\/wp-content\/uploads\/2026\/06\/aHR0cHM6Ly9ldS1pbWFnZXMuY29udGVudHN0YWNrLmNvbS92My9hc3NldHMvYmx0Y2Q3NGFjYzFkMGE5OWYzYS9ibHRkZTRhM2Ix.webp\"\/)
The UK is forecast a heatwave (Getty Stock)<\/p>\n![\"Metformin](\"https:\/\/www.newsbeep.com\/us\/wp-content\/uploads\/2026\/06\/aHR0cHM6Ly9ldS1pbWFnZXMuY29udGVudHN0YWNrLmNvbS92My9hc3NldHMvYmx0Y2Q3NGFjYzFkMGE5OWYzYS9ibHRiZDA4YTRk.webp\"\/)
Metformin can make people more vulnerable to extreme heat (Getty Stock)<\/p>\n