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Which medicine is best for dehydration?

Published in Rehydration Medicine 2 mins read

The best "medicine" for dehydration is generally an oral rehydration solution (ORS). These solutions are formulated to replace fluids and electrolytes lost due to dehydration. There are several commercially available ORS options, with varying compositions.

Oral Rehydration Solutions

Oral rehydration solutions are specifically designed to address dehydration by providing the right balance of fluids and electrolytes. Here's a look at some common ORS and their compositions:

Solution Carbohydrate (g/dL) Osmolality
Pedialyte 2.5 250
Infalyte 3 200
Rehydralyte 2.5 310


Why Oral Rehydration Solutions?

  • Balanced Composition: ORS provide a specific ratio of carbohydrates (like glucose) and electrolytes (like sodium and potassium) that are crucial for optimal fluid absorption and retention in the body.
  • Effective Absorption: The presence of glucose helps the body absorb sodium and water more efficiently.
  • Variety of Options: Different brands offer slight variations in formulation, allowing for choices based on individual needs and preferences.
  • Readily Available: These solutions are widely accessible in pharmacies and stores, making them a convenient and effective first-line treatment.

How to Choose an ORS

  • Consider Osmolality: Osmolality reflects the concentration of particles in the solution. Solutions with lower osmolality, like Infalyte, may be better tolerated by some individuals.
  • Taste Preference: Some ORS come in different flavors, which can make them more palatable, especially for children.
  • Availability: Choose an ORS that is easily accessible to you.

When to Seek Medical Advice

While ORS are very effective for mild to moderate dehydration, it is essential to seek medical attention if you experience severe symptoms such as:

  • Confusion or disorientation
  • Extreme weakness or lethargy
  • Rapid heart rate
  • Reduced or absent urine output
  • Inability to keep fluids down


In summary, an oral rehydration solution like Pedialyte, Infalyte, or Rehydralyte is the most effective "medicine" for treating dehydration, offering a balanced approach to rehydrating and replenishing electrolytes.

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