Q: How does Gastrolyte® work?

A: Gastrolyte® is a range of oral rehydration products designed to help rehydrate and manage mild dehydration by replacing fluids and electrolytes in the body. Gastrolyte® contains essential electrolytes and glucose, which enhance the absorption of sodium across the intestinal membrane.1

Q: What conditions can Gastrolyte® be used for?

A: Gastrolyte® is a balanced mix of glucose and minerals that promotes water absorption and is indicated for dehydration. It helps to replace fluids and electrolytes lost due to dehydrating conditions such as:
  • Diarrhoea
  • Vomiting
  • Fever
  • Cold or flu

Q: What are the dosage recommendations for Gastrolyte®?

A: How much Gastrolyte® needed per day should be determined by taking into account the weight of the patient as well as the severity of the condition. Please see Table 1. below for further information. Note: Children dehydrate much quicker than adults and as such parents need to be vigilant and seek medical attention quickly if symptoms persist. Seek medical advice if diarrhoea persists for more than:
  • 6 hours in infants under 6 months of age
  • 12 hours in children aged 6 months ‐ 3 years
  • 24 hours in children aged 3‐6 years
  • 48 hours in adults and children over 6 years of age

Table 1: Volume of fluid required over the first 6 hours and then every 6 hours thereafter

Weight (kg) In the first 6 hours (mL) Every 6 hours thereafter (mL)
Child 5kg‐9 200‐400 150‐210
10‐14 400‐800 300‐420
15‐19 800‐1000 450‐630
20‐29 900‐1500 600‐840
30kg ‐ Adults 1000‐2000 900‐1260

Q: What is the difference between Gastrolyte products?

A: Gastrolyte® products are designed to provide an easy to use rehydration solution during dehydrating illnesses such as diarrhoea, vomiting, fever, colds and flu. Gastrolyte® is available in sachets, effervescent tablets and in a ready to drink formula, and in several different flavours, ensuring there will always be a Gastrolyte® product to suit your personal needs.
Product Name Format Pack Sizes Flavours Ingredients
Gastrolyte® Electrolyte Rehydration Formula (Ready To Drink) Ready to drink oral liquid 1 litre and 4 x 250ml packs Available in Orange and Strawberry flavour
  • Glucose 15.8mg/mL
  • Potassium Citrate 2.11mg/mL
  • Sodium Chloride 2.6mg/mL
  • Citric Acid Anhydrous 2.53mg/mL
Gastrolyte® Electrolyte Rehydration Formula (Effervescent Tablets) Effervescent tablets that are dissolved in water 20 Effervescent tablets Available in Lemon, Raspberry and Blackcurrant flavour
  • Glucose Anhydrous 162mg/tab
  • Potassium Chloride 186mg/tab
  • Sodium Chloride 117mg/tab
  • Citric Acid Anhydrous 384mg/tab
  • Sodium Bicarbonate 336mg/tab
Gastrolyte® Electrolyte Rehydration Formula (Sachets) Sachets of powder that are dissolved in water 10 Sachets Available in Orange flavour
  • Glucose 356mg/sachet
  • Potassium Chloride 300mg/sachet
  • Sodium Chloride 470mg/sachet
  • Sodium Acid Citrate 530mg/sachet

Q: Can I use sport drinks, flat lemonade or juice to help rehydrate?

A: Sports drinks are considered unsuitable for dehydration caused by vomiting and/or diarrhoea. This is because although sports drinks replenish electrolytes, they replace those lost through sweating, not through diarrhoea or vomiting.2 Also, sport drinks contain much more sugar than sodium which pulls more fluid into your intestines, worsening your dehydration.3 It’s a similar story for lemonade or other soft drinks. They have a high sugar content which attracts fluid into the gut, causing more diarrhoea.4 Juices containing a high amount of sugar also fall into this category so should be avoided during diarrhoea.5

Q: Is Gastrolyte® safe during pregnancy and lactation?

A: There is no contraindication for the use of Gastrolyte® in pregnancy and lactation. However, pregnant and lactating women suffering from acute diarrhoeal conditions such as gastroenteritis should consult their healthcare practitioner.

Q: What will happen if Gastrolyte® is mixed with fluids other than water?

A: Adding Gastrolyte® Electrolyte Rehydration Formulas (effervescent tablets or sachets) to liquids other than water (such as milk, soft drinks, lemonade or cordials) may alter the careful balance of glucose and electrolytes necessary for quick and effective rehydration. Only mix with water.

Q: How long can I use Gastrolyte for?

A: Seek medical advice if diarrhoea persists for more than:
  • 6 hours in infants under 6 months of age
  • 12 hours in children aged 6 months – 3 years
  • 24 hours in children aged 3‐6 years
  • 48 hours in adults and children over 6 years of age

Q: Does Gastrolyte® contain any traces of peanuts?

A: Gastrolyte® products do not contain any peanuts or peanut derived ingredients.

Q: Does Gastrolyte® use any animal, lactose, egg, casein, or dairy products?

A: Gastrolyte® products do not contain any ingredients derived from animal products, lactose, egg, casein, or dairy.

Q: Does Gastrolyte® contain gluten?

A: Gastrolyte® products do not contain gluten.

Q: Does Gastrolyte® contain sweeteners such as aspartame or saccharin?

A: Gastrolyte®Ready to Drink formulas are sweetened with sucralose. Gastrolyte® effervescent and sachets are sweetened with saccharin. There is no aspartame in any Gastrolyte® products.

Q: Does Gastrolyte® contain fructose?

A: Gastrolyte® products do not contain fructose.

Q: Does Gastrolyte® contain phenylalanine?

A: Gastrolyte® products do not contain any added phenylalanine.   Use only as directed. Always read the label. If symptoms persist, consult your healthcare professional.