Isotonix® Vitamin C – High-Absorption Immune Support

Isotonix® Vitamin C is a premium isotonic vitamin C supplement formulated to deliver fast, efficient absorption for maximum immune and antioxidant support. Vitamin C is an essential nutrient that plays a vital role in immune defence, collagen formation, skin and eye health, and protection against free-radical damage.

Each serving provides 500 mg of vitamin C—equivalent to the amount found in 7 oranges, 16 lemons, or 6 grapefruits—delivered through the advanced Isotonix® delivery system, designed to enhance nutrient uptake compared to traditional tablets or capsules.

This easy-to-drink powder supports daily wellness, especially during times of stress, seasonal challenges, or increased immune demand.

Key Benefits

• Helps prevent vitamin C nutritional deficiencies
• Supports healthy immune system function
• Helps decrease the duration of the common cold**
• Provides powerful antioxidant protection against free radicals
• Supports collagen formation, skin health, and wound healing**
• Helps reduce symptoms of mild allergies and allergic rhinitis**
  
• Supports healthy eye function
• Helps maintain capillary and blood vessel health
• Helps maintain capillary and blood vessel health
• Supports joint mobility
• Helps decrease nervous tension and mild anxiety**
• Helps reduce symptoms of mild varicose veins**
• Helps reduce severity of symptoms of mild upper respiratory infections**
• Supports the body’s ability to adapt to physical and mental stress
  

*Vitamin and mineral supplements should not replace a balanced diet.
**If symptoms persist, seek the advice of a healthcare professional.

Why Choose Isotonix® Vitamin C?

Vitamin C is one of the most researched and trusted nutrients for immune health—and Isotonix® Vitamin C takes it to the next level.

Isotonix Vitamin C delivers 500 mg of vitamin C per serving—equivalent to 7 oranges—in a delicious natural orange flavour. Unlike standard vitamin C tablets, Isotonix® Vitamin C uses a patented isotonic delivery system, allowing nutrients to be absorbed faster and more efficiently in the body. This means your body can utilise the vitamin C more effectively, supporting immune defences, antioxidant activity, and overall wellbeing.

Product Features

• 500 mg vitamin C per serving
• Natural orange flavour
• Vegan & gluten-free
  
• No added wheat, soy, yeast, salt, preservatives, artificial flavours
• Drinkable isotonic formula for optimal absorption
• Produced under strict GMP standards
  
• TGA approved

How to Use

1. Pour 1 level capful of powder into the over‑cap.
2. Add water (60 mL / 2 fl oz).
3. Stir and drink.
4. Take once daily for best results. Best taken on an empty stomach

Ingredients 

• Vitamin C (Ascorbic Acid)
  Vitamin C is a powerful antioxidant found naturally in citrus fruits, berries, and vegetables. It helps protect cells from oxidative stress, supports immune and nervous system function, reduces fatigue, improves iron absorption, and supports healthy skin, bones, teeth, and blood vessels. Vitamin C also helps regenerate vitamin E and supports normal psychological function.
  
• Beta-Carotene (Vitamin A Precursor)
  Beta-carotene converts to vitamin A in the body and supports healthy vision, skin, mucous membranes, immune function, and normal cell growth and differentiation.
  
• Other added non-active ingredients: 
  Fructose, maltodextrin, glucose monohydrate, potassium bicarbonate, citric acid, orange powder flavour, malic acid, lemon lime flavour, natural lemon flavour, silica, mango flavour, stearic acid and sucralose.

FAQs

What is the RDI of Vitamin C?

TThe recommended dietary intake (RDI) for adults is 45 mg per day. Isotonix® Vitamin C provides 500 mg per serving, an optimal amount to support immune health and antioxidant protection. During periods of illness or stress, higher intake may be beneficial.

Who should take Isotonix® Vitamin C? 
Most adults can benefit from vitamin C supplementation, especially those over 18 who may not consume enough fruits and vegetables. Those who may benefit most include older adults, people under stress, smokers, athletes, and individuals with increased immune or cardiovascular demands.

Can you take too much Vitamin C? 
Vitamin C is water-soluble, and excess amounts are usually excreted in urine. At doses above 1,000 mg per day, some individuals may experience mild gastrointestinal discomfort. For best tolerance, vitamin C can be taken in divided servings.

How should Isotonix® Vitamin C be taken?
Mix 1 level capful (3.3 g) with 60 mL of water and drink immediately. Take once daily or as directed by your healthcare professional. Maximum absorption occurs when taken on an empty stomach. The product is isotonic only when mixed as directed.

Does Isotonix® Vitamin C contain allergens?
This vegetarian formula contains no added wheat, soy, yeast, gluten, artificial flavours, starch, salt, preservatives, or milk.