Overview

• The Met Office has issued an amber heat-health alert across the UK with highs forecast to reach 34°C, an unusually intense June heatwave.
• Around eight million Britons on antidepressants, antipsychotics, heart drugs, ADHD stimulants or insulin face elevated risks of overheating or reduced drug stability.
• Certain antidepressants and antipsychotics can block neurotransmitters needed for sweating, while beta-blockers, diuretics and stimulants can impair cooling and fluid balance.
• High temperatures accelerate insulin absorption and degrade its potency, increasing the danger of hypoglycaemia and loss of treatment effectiveness without proper storage.
• Health bodies advise patients to follow label storage guidelines, stay hydrated, avoid peak heat hours and consult healthcare professionals before changing any medication.