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Australia heatwave sparks warning on heat‑sensitive medicines

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Pharmacists in Australia are warning of heat sensitivity of some medicines as heatwave descends

With extreme heat forecast across much of Australia in the coming days, the PGA is warning some common medicines can increase the risk of sunburn and heat-related illness.

PGA National President Professor Trent Twomey has urged people in Australia to take extra precautions during the heatwave, review how they store medicines, and speak to their community pharmacist if they have any concerns.

“Community pharmacists are always available to provide advice on the safe storage of medicines, checking if medicines increase heat or sun sensitivity and helping to manage dehydration, heat stress or sunburn,” Prof Twomey said.

“Many people simply don’t know some non‑prescription medicines like painkillers and antihistamines can affect your reaction to the sun,” he said.

He noted some prescription medicines — including certain antidepressants and ADHD treatments — can make people more vulnerable to heat by reducing tolerance, increasing dehydration or slowing the body’s ability to cool itself.

“It’s important for people to continue using these medicines — but take additional precautions in the heat and sun,” Prof Twomey said.

Many people simply don’t know some non‑prescription medicines like painkillers and antihistamines can affect your reaction to the sun.

Prof Twomey

Community pharmacists remain a vital point of support for everyone in Australia during extreme heat — offering quick, accessible advice which can help prevent serious reactions.

They encourage everyone in Australia during the hotter periods to stay hydrated, protect themselves from the sun and seek guidance early if they’re unsure about their medicines.

There are more than 6,000 community pharmacies in Australia. They are open earlier, longer and later than many other healthcare options, providing safe and accessible care when and where it’s needed.



Australasian Pharmacy

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