Updated on - 27 Jan 2026
Dehydration can leave you feeling weak, dizzy or completely drained, whether it’s from diarrhoea, fever or a hot day outdoors. Oral Rehydration Salt, or ORS, is a simple and effective way to quickly restore lost fluids and essential salts. While it is safe for most people, using it incorrectly or too much can sometimes cause mild discomfort.
In this guide, you will learn how ORS works, possible side effects and tips to use it safely.
What is oral rehydration salt (ORS)?
Oral Rehydration Salt (ORS) is a simple but powerful solution used to treat dehydration. It is made by mixing clean water with glucose and essential salts, such as sodium and potassium. This combination helps the body absorb fluids quickly and replace what is lost. ORS works fast and is safe for people of all ages.
It is used when the body loses too much water or electrolytes, such as during diarrhoea, vomiting, fever or heavy sweating. Dehydration can cause weakness, dizziness, dry mouth or fatigue. Drinking ORS restores balance and prevents complications caused by dehydration.
ORS is one of the most effective and affordable ways to manage fluid loss at home. It is recommended by doctors worldwide and considered essential during illnesses that lead to dehydration.
How does ORS work in the body?
ORS helps your body absorb water and essential salts much faster than plain water. When you drink ORS, the sodium and glucose in the solution enter the small intestine cells. Special proteins called SGLT1 transporters pull sodium and glucose into the intestinal cells at the same time, and water naturally follows. This is known as the sodium-glucose co-transport mechanism and is the main reason ORS works effectively during dehydration.
ORS also contains potassium and chloride, which help restore the body’s electrolyte balance. These electrolytes are essential for steady nerve function, proper muscle movement and maintaining fluid balance inside and outside your cells. By replacing these salts and supporting rapid water absorption, ORS helps prevent dizziness, weakness, fatigue and severe dehydration.
Potential risks and side effects of Oral Rehydration Therapy
ORS is generally safe when used as directed, but it can cause problems if taken in excessive amounts or mixed incorrectly. It can also lead to salt toxicity, also called hypernatremia.
The possible ORS powder side effects include:
- Nausea and vomiting
- Dizziness
- Appetite loss
- General body weakness
- Increased thirst
- Feelings of confusion
- Irritability
- Twitching of muscles
- Swelling of the ankles or feet
- Puffy eyelids
In rare cases, serious side effects may occur if too much sodium is consumed at once. These can include convulsions, very high heart rate (tachycardia), high blood pressure or kidney problems. If symptoms worsen or a severe reaction occurs, stop using ORS and seek medical help immediately. Having a reliable policy, like a health insurance plan, can ensure you get timely care without added stress.
To stay safe, always prepare ORS exactly as instructed on the packet, using the recommended amount of clean water. Do not add extra powder, sugar or salt and avoid drinking large quantities at once. Taking small, frequent sips helps your body absorb the solution properly and reduces the risk of complications.
Conclusion
help you and your loved ones recover safely during illness, heat or physical exertion. Knowing how and when to use it can prevent complications and give you confidence in managing dehydration at home. Keep ORS handy, use it correctly and stay attentive to your body’s signals.
For added peace of mind, consider a health insurance plan that ensures timely care when unexpected medical situations arise. To get expert guidance on the best family health insurance plan for your needs, fill out the form on this page today. Taking this step can help you stay prepared and secure for whatever comes next.
FAQs
1. Can ORS help prevent dehydration before it starts?
ORS is mainly used to treat dehydration, but in certain situations, like prolonged physical activity in heat or mild diarrhoea, sipping ORS can help maintain fluid and electrolyte balance and prevent dehydration from getting worse.
2. Is ORS suitable for infants and elderly people?
Yes, ORS is safe for both infants and older adults. For infants, use age-appropriate amounts and follow pediatric guidance. For older adults, ensure they drink small, frequent sips to avoid overwhelming the body.
3. Can ORS be combined with normal water or other drinks?
ORS should be taken on its own for the best effect. Plain water or other drinks can be consumed separately, but avoid adding extra sugar or salt to the ORS mixture.
4. How quickly does ORS start working?
ORS begins to work within minutes as your body starts absorbing water and electrolytes. Most people notice improvements in energy and reduced thirst within a few hours, depending on the level of dehydration.
5. Are there any long-term effects of frequent ORS use?
Frequent or unnecessary use of ORS can disturb the body’s salt and fluid balance. It is intended for dehydration management, not daily hydration. For ongoing hydration needs, water and a balanced diet are usually sufficient.
6. Can ORS help with hangovers or after heavy exercise?
Yes, ORS can help restore lost fluids and electrolytes after intense exercise or alcohol consumption. It can reduce fatigue, dizziness and weakness, but it should not replace medical care if severe dehydration or illness occurs.
Disclaimer: The information provided in this blog is for educational and informational purposes only. It is not intended as a substitute for professional advice, diagnosis or treatment. Please consult your general physician or another certified medical professional for any questions regarding a medical condition. Relying on any information provided in this blog is solely at your own risk, and ICICI Lombard is not responsible for any effects or consequences resulting from the use of the information shared.
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