A practical guide
Many adults need around 2 to 3 litres of fluid a day, more in hot weather or when active.
Signs you need more
Dark urine, headaches and tiredness can be signs of dehydration.
Special situations
People with heart or kidney conditions may need to limit fluids. Follow your doctor's advice.
Trusted sources
- World Health Organization (who.int)
- Indian Council of Medical Research (icmr.gov.in)
- Ministry of Health and Family Welfare, Government of India (mohfw.gov.in)
This content is for educational purposes and does not replace professional medical advice. If you are worried about your health, talk to a doctor or call 112 in an emergency.