Isotonix® Vitamin C - Single Bottle (90 Servings)

$52.50 SGD
$0.98 SGD Cashback

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Product info


  • Provides antioxidant protection
  • Supports a healthy immune system
  • Maintains skeletal, muscle, cardiovascular and skin health

Gluten Free - the finished product contains no detectable gluten.

No Detectable GMO - the finished product contains no detectable genetically modified organisms.

- this product is vegetarian.

Isotonic-Capable Supplements
: easy-to-swallow isotonic supplements that allow for faster nutrient absorption by the body. Individual response varies.

No Pork
- this product contains no pork or pork products.



The two important factors when searching for quality nutritional supplements are absorption and benefits. Isotonix supplements, when mixed with water, have similar osmotic pressure as the body’s fluids, such as tears, plasma and blood. Isotonix Vitamin C can provide absorption and delivery of the nutrients within the product in an efficient way.

Individual response varies.



Vitamin C
The best food sources of vitamin C include all citrus fruits (oranges, grapefruit, lemons and tangerines), strawberries, tomatoes, broccoli, Brussels sprouts, peppers and cantaloupe. Vitamin C is a "fragile" vitamin and can be easily destroyed by cooking or exposure to oxygen.

Vitamin C is a cofactor or helper in the metabolism of some amino acids and hormones. It is a co-factor in the synthesis of collagen and helps support newly forming collagen. Vitamin C supports cardiovascular health and the immune system. Some of Vitamin C’s benefits appear to be due to its antioxidant properties. Vitamin C also plays a role in maintaining healthy connective tissues, including collagen.

Vitamin C is necessary for humans as humans are incapable of producing vitamin C in their bodies. Vitamin C is known for its antioxidant properties. Since it is water-soluble, vitamin C is flushed from the body each day. As humans may not always eat foods containing an adequate amount of vitamin C, taking a supplement can help in supplementing diet.

Beta Carotene (Vitamin A Precursor)

Vitamin A is a fat-soluble vitamin that is part of a family of compounds including retinol, retinal and beta-carotene. Beta-carotene is also known as pro-vitamin A because it can be converted into vitamin A. Vitamin A helps to maintain healthy eyes and immune system.

Foods rich in potassium include fresh vegetables and fruits, such as bananas, oranges, cantaloupe, avocado, raw spinach, cabbage and celery. Potassium is an essential mineral that helps to keep fluid balance. It also plays a role in a wide variety of biochemical and physiological processes. It supports nerve and muscles health.



Can Isotonix Vitamin C support my immune system?
Yes. Vitamin C is known to be able to support the immune system and is an antioxidant.

Who can supplement with Isotonix Vitamin C?
Individuals who wish to supplement their diet or those who wish to support their immune system can use Isotonix Vitamin C. Consumers with pre‐existing conditions should seek advice from their healthcare professionals.

What happens when I take too much Isotonix Vitamin C?  
At high doses (over 1000mg/day), some people can experience gastrointestinal side effects such as stomach cramps, nausea, and diarrhea.

How should I take Isotonix Vitamin C?  

Isotonix Vitamin C is for ADULT USE ONLY. Pour 1 level, white bottle capful of powder into the overcap. Add water to the line on the overcap (2 fl. oz./60 ml) and stir. As a dietary supplement, take once daily or as directed by your healthcare provider. Maximum absorption occurs when taken on an empty stomach. This product is isotonic only if the specified amounts of powder and water are used.

Does Isotonix Vitamin C contain pork or pork products?


Is Isotonix Vitamin C vegetarian?

Is Isotonix Vitamin C manufactured in a Good Manufacturing Practice (GMP) facility?

Yes, this product is manufactured in a GMP compliant facility.



Customer Reviews
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Displaying reviews  1 - 5 of 45


  • Verified Buyer


  • Shop Consultant

Strengthen your immune system

I love the Vitamin C, it strengthens your immune system and the antioxidant doubles up when you mix it with OPC3


  • Shop Consultant

Every home should have this .

My family members takes one cap of vitamin c daily to maintain a good body immune system . We rarely fall sick . Once in a very long while if anyone in the family were to feel feverish or not we’ll , he/she will just drink 2-3 caps of vitamin c ( 3times a day ) , get some sleep and realise the next day we are totally ok .


  • Shop Consultant

Daily Boost

It is always important to replenish our body with Vitamin C especially with the hot weather in Singapore and because of the better absorption, we are able to feel the boost better.



Love this vitamin c supplement much