Stay ahead of dehydration during hot weather
Heat increases fluid needs and can make dehydration develop faster, especially during physical work or illness.
Drink regularly during hot weather and physical activity, and pay attention to thirst, urine output and how you feel. Extra care is important for children, older adults and people who are unwell.
Severe weakness, confusion, fainting, inability to keep fluids down or signs of heat illness require urgent medical assessment.
Some heart or kidney conditions require fluid limits, so follow individual clinical advice if that applies to you.
Guidance basis: WHO self-care and heat-health principles. This article is general health information and does not replace individual medical advice.
This article provides general information. Your medicines, symptoms and medical history may change what is appropriate for you. Speak with a qualified pharmacist or clinician for individual advice.