Isotonix Vitamin C
Regular: Can$53.89

Can$44.21

+ Can$0.88 / 1.99% Cashback

Single Bottle (90 Servings)

Code: C13033

Our Bodies Need Vitamin C Daily

Vitamin C is an essential vitamin that the body cannot make or store. Isotonix® Vitamin C stands above the rest with a unique, easily digestible formulation that promotes overall health. Powerfully deliver what your body demands with Isotonix!

Active ingredients: Vitamin A (as beta-carotene), Vitamin C (as ascorbic acid), Potassium (as potassium bicarbonate).

Other ingredients: Fructose, glucose, maltodextrin, malic acid, orange flavor, silica, citric acid, stearic acid.

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The Vitamin C Advantage

90mg

Recommended daily allowance of vitamin C for males

75mg

Recommended daily allowance of vitamin C for females

Vitamin C, One of the World's Most Popular Vitamins

Heralded for being quite possibly the best immune system supporter and antioxidant available today, vitamin C (ascorbic acid) protects the body from free radical damage. As arguably one of the most important water-soluble antioxidants in the body, ascorbic acid performs its antioxidant functions within the aqueous compartments of the blood and inside cells. It can also help restore the antioxidant potential of vitamin E (a fat-soluble antioxidant) and supports immune cell function.

image of sliced lemons, kiwi, grapefruit and oranges

Product Classification

image of Vegan

Vegan

image of lab beaker

No Detectable GMO

Image of wheat with a line through it

Gluten-Free

image of glass containing liquid

Isotonic

Directions for use

woman adding Isotonix Vitamin C powder to cup

Pour 1 small capful (3.3 g) of Isotonix Vitamin C into a cup.

woman mixing Isotonix Vitamin C with water

Mix 2 fl oz (60 ml) of water per capful and stir until fully dissolved.

Woman drinking Isotonix Vitamin C

Take once daily. Maximum absorption occurs when taken on an empty stomach.

Key Ingredients & Benefits

image of oranges
Vitamin C (Ascorbic Acid)

Helps maintain immune function
Aids in maintenance of bones, cartilage, teeth and gums

image of carrots
Beta Carotene (Vitamin A Precursor)

Helps maintain eyesight
Promotes bone health

image of bananas
Potassium (Bicarbonate)

Maintenance of good health

Isotonix Delivery System

:05 minutes

Isotonix Liquid Vitamins

  • Formulated to survive digestion.
  • Delivers concentrated nutrients to the site of absorption.
  • Contains no fillers or binders.
  • No artificial color or flavors. 

:40 minutes

Standard Vitamin Tablet

  • Contains lab-created coatings and lubricants.
  • Often contains artificial colors, nutrients and flavors.
  • Limited absorption of nutrient utilization. 

Frequently Asked Questions

Isotonix Vitamin C contains 500 mg of vitamin C per serving, which helps to maintain the immune system. In times of illness or distress, it may be helpful to supplement with a greater amount of vitamin C.

Vitamin C has been heralded for quite possibly being the best immune system supporter and antioxidant available today. People who take daily doses of vitamin C can boost their immune system. Vitamin C supports the immune system by protecting the body from free radical damage. As a water-soluble vitamin, ascorbic acid performs its antioxidant functions within the aqueous compartments of the blood and inside cells and can help restore the antioxidant potential of vitamin E (a fat-soluble antioxidant). Support of immune cell function is also a key role performed by vitamin C.

Everyone over 18 should use Isotonix Vitamin C Formula to add vitamin C to their diet because very few of us get the recommended five servings of fruits and vegetables in our daily diets. Those who may especially need supplemental vitamin C include the elderly, those with weakened immune systems, smokers, those under heavy amounts of stress, those with cardiovascular conditions and athletes.

Ascorbic acid is extremely safe even at relatively high levels (because most of the excess is excreted in the urine). At high doses (over 1000 mg/day), some people can experience gastrointestinal side effects such as stomach cramps, nausea and diarrhea. It is recommended that you take vitamin C supplements in gradual servings throughout the day to achieve maximum benefits.

Research Scope

43%

The percentage of adults with inadequate vitamin C intake

90%

amount of dietary vitamin C lost from food when heated

100x

the concentration of vitamin C in the adrenal glands, or stress glands

Reviews

Customer Rating

4.9 out of 5 star rating.

(41 reviews)

Break down of ratings:
(38) 5 star ratings.
or, 93% of total reviews.
(2) 4 star ratings.
or, 5% of total reviews.
(0) 3 star ratings.
or, 0% of total reviews.
(0) 2 star ratings.
or, 0% of total reviews.
(1) 1 star ratings.
or, 2% of total reviews.
98%

would recommend this product.

Write a Review

Isotonix VitC

5 out of 5 star rating.

by Anonymous

on 02/13/2026

Have been taking this product for over 15 years. My wife and I love it. Its an antioxidant and protects and supports my immune system.

Response from Customer Service on 02/16/2026

Thank you so much for your wonderful review! We're thrilled to hear that you and your wife have been enjoying Isotonix® Vitamin C for over 15 years. Your continued support and feedback mean so much to us. Thank you for making Isotonix® a part of your daily routine and for being valued members of our community!

The basic vitamin that i need it everyday

5 out of 5 star rating.

by KEAT GEORKC

Shop Consultant

on 05/13/2023

Not only contain Vitc C but still have Beta Carotene and potassium

Response from Customer Service on 05/14/2023

Dear Valued Customer,

Thank you for taking the time to leave your thoughts on the Isotonix™ Vitamin C Plus. We are happy to hear you are pleased with the product.

Thank you.
UnFranchise Services Department

My daily drink

5 out of 5 star rating.

by Goh

Shop Consultant

on 03/29/2023

Take this everyday and that all I need for my vitamin C!

Response from Customer Service on 07/24/2023

Dear Valued Customer,

Thank you for taking the time to leave your thoughts on Isotonix® Vitamin C. We are happy to hear you are pleased with the product.

Thank you again!
Market Singapore Product Team

RATED THE ISOTONIX VITAMIN . C

5 out of 5 star rating.

by ClintonF

on 06/29/2022

VERY PLEASED WITH YOUR PRODUCTS.

Response from Customer Service on 06/30/2022

Dear Valued Customer,

Thank you for taking the time to share your thoughts on the Isotonix® Vitamin C! We are so happy to hear you are pleased with the product!

Thank you again!
The Product Information Team

Vitamin C

5 out of 5 star rating.

by Anonymous

on 06/07/2022

Never felt so healthy! Immune system is doing great!

Response from Customer Service on 06/08/2022

Dear Valued Customer,

Thank you for taking the time to share your thoughts on the Isotonix® Vitamin C! We are so happy to hear you are pleased with the product!

Thank you again!
The Product Information Team

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