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Heat risk from meds highlighted during UK heatwave

New guidance reminds patients that some drugs can increase sensitivity to heat and sunlight during hot weather.

August 13, 2025 at 07:56 AM
blur My ADHD prescription medication gave me heat exhaustion

A personal account shows how some ADHD meds can heighten heat sensitivity, underscoring the need for clearer warnings during heatwaves.

Heat sensitive ADHD medication linked to heat exhaustion

Erin Lister recalls seven sun filled days on Rhodes that turned to dizziness and nausea. She learned the ADHD medication she takes may increase sensitivity to heat and sunlight, a risk Dr Alison Cave of the Medicines and Healthcare products Regulatory Agency says is shared by many medicines. The article notes that warnings can stretch across diuretics, antidepressants and stimulants, and that patients should read the patient information leaflet and ask a pharmacist or clinician about weather related risks before travel.

With the UK heatwave driving more emergency visits, health officials stress practical steps: stay hydrated, avoid the hottest part of the day, and store medicines in a cool, dry place away from direct sun. NHS guidance outlines signs of heat illness and when to seek urgent care, while the MHRA urges people to report side effects through the Yellow Card scheme and not to stop medications without medical advice.

Key Takeaways

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Some medicines increase sensitivity to heat and sun
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ADHD stimulants can raise body temperature
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Always read the patient information leaflet
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Stay hydrated and avoid peak sun hours
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Consult a clinician or pharmacist before traveling in hot weather
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Store medicines in a cool, dry place and away from direct sunlight
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Do not stop medications without medical advice

"There are many medicines that can increase your sensitivity to heat and sunlight."

Dr Alison Cave on broad risk across drug types

"Stay hydrated, stay informed, and take sensible precautions."

MHRA guidance for patients taking meds in warmer weather

"Always read the patient information leaflet, and don't hesitate to ask your pharmacist for guidance"

Advice given to patients taking meds in warm weather

"Medications can affect how your body responds to heat"

General finding from MHRA discussion

This piece highlights a less discussed risk at the climate health edge: how medicines can change the body’s response to heat. It reframes heat safety as a medical issue, not just a weather concern. It also spotlights a gap between casual travel preparation and clinical guidance, suggesting patients often miss warnings about heat when they fill a prescription.

The broader implication is clear. Health care providers should reinforce heat related warnings with every prescription, especially for stimulants and other drugs known to affect thermoregulation. Labeling, pharmacist counseling, and digital reminders could better protect patients during heatwaves and in hot destinations.

Highlights

  • Sun and pills can collide in surprising ways
  • Always read the patient leaflet before a sunny trip
  • Hydration saves lives when heat rises
  • Ask a clinician before stopping meds during heatwaves

Health risk from heatwave medication warnings

The article shows medicines can heighten heat sensitivity, underscoring gaps in patient awareness and the need for clearer warnings from providers and drug labels.

Heat safety and medicine warnings belong together, especially when the sun is strongest.

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