Clinical Hydration. Rapid Results.

The Solution To Managing Mild To Moderate Dehydration

Drinking water alone is not enough to stay hydrated! Our body depends on the correct balance of water and other fluids such as electrolytes to maintain normal bodily functions.

Replacing lost water and electrolytes with an oral rehydration solution (ORS) is the most important aspect of managing dehydration. Hydralyte, a hypotonic solution, is a scientifically formulated ORS based on the World Health Organisation criteria for oral rehydration therapy. Hydralyte contains the correct balance of glucose and electrolytes to allow for rapid and effective rehydration.


Tonicity rerefers to the ability of a solution to alter the internal water volume of the cell and is an important factor to consider when choosing an oral rehydration solution.

An ORS formula must meet two criteria – the correct balance of sodium and glucose, and the solution must be hypotonic.

Hypotonic solutions are used when the cell is dehydrated and fluids need to be put back intracellularly. A hypotonic solution is a solution that helps water move into the cell, thus hydrating it. A hypertonic solution is one where the osmotic pressure outside the cell is higher than inside the cell, causing water to be pulled from the cell and thus dehydrating it. An isotonic solution is one where the osmotic pressure outside and inside the cells is the same, thus resulting in no net movement of water into or out of the cell.

[It is important to note that water alone or sugary drinks (i.e. soda or sports drinks) do not contain the correct balance of sodium or glucose to allow for rapid hydration.]


To avoid dehydration, it helps to understand the role that water and electrolytes play in your body, how your body loses fluids and electrolytes and what you can do to keep your body well-hydrated. Both water and electrolytes play a vital role in keeping you hydrated. Water helps to maintain body temperature, digest food as well as lubricate tissues and joints. Electrolytes help to retain fluid and maintain good nerve and muscle function. To function correctly and remain healthy, our body requires the correct internal balance of water and electrolytes such as sodium, potassium and chloride. These components are derived from foods and fluids we consume and are lost via urine, sweat, saliva and other bodily fluids.

Causes of Dehydration

Causes of dehydration include vomiting and diarrhoea, heavy sweating, travel, excessive alcohol consumption, clinical conditions

Symptoms of Dehydration
  • Increased thirst
  • Dry mouth
  • Lethargy
  • Decreased urine output (or darker in colour that usual)
  • Migraines/headaches
  • Loss of skin elasticity (white marks will appear if pinched)
  • Sunken eyes and fontanelle in babies

Dehydration may not always be evident and can be overlooked whilst dealing with the causative agents. For this reason, young children and the elderly are more at risk of dehydration

For more information, visit hydralyte.com.au

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Q: Is Hydralyte more effective than rehydrating with water?

A: Water is the best hydration fluid for daily consumption. However if you experience dehydration, oral rehydration solutions are clinically formulated to contain the correct balance of fluid and electrolytes to allow for faster and more effective absorption of fluid and electrolytes by the body for rapid rehydration to cure dehydration quickly.

Q: How long do I take Hydralyte for?

A: Drink Hydralyte when thirsty or exhibiting signs of dehydration, or while symptoms persist. However, seek medical advise if vomiting or diarrhoea persists for more than:

  • 6 hours in infants under 6 months
  • 12 hours in children under 3 years
  • 24 hours in children aged between 3 - 6 years
  • 48 hours in children over 6 years and adults
Q: Is Hydralyte suitable for pregnant and breastfeeding mothers?

A: Hydralyte is suitable for pregnant or breastfeeding mothers, however, if you are pregnant or breastfeeding and have vomiting and diarrhoea, please seek medical advice.

Q: Is Hydralyte suitable for children under 12 months?

A: Hydralyte is family-friendly for both kids and adults alike and is safe to use in children under 12 months - please refer to packaging for dosage instructions.

Q: Does Hydralyte contain:


Isomalt No
Saccharin No
Aspartame No
Salicylates No
Gluten No
Wheat No
Yeast No
Nuts No
Animal Products No
Lactose or dairy products No
Q: Does Hydralyte contain added sugars?

A: Hydralyte contains glucose at a low concentration, sufficient for successful rehydration. The sweetener in Hydralyte is sucralose, a modified form of table sugar, which has an excellent safety profile. There is no known safety concerns with sucralose.

Q: What are the preservative used in Hydralyte?

A: Hydralyte Electrolyte Powder does not contain any preservatives. Hydralyte Ice Blocks contain small amounts of potassium sorbate and sodium benzoate. Both these ingredients are found naturally in fruits such as oranges, lemons, cranberries, and help to protect fruit from mould.

Q: Does Hydralyte contain fructose?

A: Hydralyte does not contain any added fructose. However it contains natural flavours that may contain small quantities of fructose. If you suffer from dietary fructose intolerance (malabsorption), Hydralyte will generally be well-tolerated. Should any unpleasant symptoms arise, cease taking the product. If you suffer hereditary fructose intolerance, consult your healthcare professional before use.

Q: How many calories does Hydralyte contain?


Product Type 1 Serving Per Serving
Ice Block 62.5ml Approx. 4 Calories / 17 Kilojoules
Powder 1 sachet - 200ml Approx. 12 Calories / 50 Kilojoules

Hydralyte is available at:

  • Doctor's Clinics
  • NTUC Unity Outlets
  • Watsons Outlets
  • Guardian
  • Nishino
  • Vitakids
  • Woods Pharmacy
  • and other independent pharmacies
  • Online