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Clinicians Hi-Dose Vit C Powder


  • 75gm

    RRP: $16.10

    Save 24% ($3.90)

  • 300gm

    RRP: $50.30

    Save 28% ($14.30)

Clinicians Hi-Dose Vit C is a potent buffered formulation containing 2 forms of Vitamin C that may effectively support the immune system in times of stress.

Clinicians Hi-Dose Vit C is a specialised research-based buffered formulation containing 2 forms of vitamin C, (sodium ascorbate and ascorbic acid) that may support immune function during times of stress.


Adult Dosage: Take 1 level teaspoonful in water or juice 1-2 times daily.

Enhanced Dosage (for short term adult use only):

Day 1-3: Take 1 level teaspoonful in water or juice every 2 to 3 hours during waking hours*.

Day 4-7: Take 2 level teaspoonsful twice or three times daily.

After Day 7: Return to recommended adult dosage or as directed by your health professional.

*Monitor dosage in accordance with bowel tolerance.


  • Do not take high doses of vitamin C if you have a gastric ulcer or ulcerative colitis. Gastric ulcer or Ulcerative colitis: vitamin C is generally well-tolerated, however people with gastric sensitivities are advised to take this product with food or to lower the dose if bowel discomfort occurs.
  • High dosing of vitamin C may lead to bowel discomfort in some individuals. Diarrhoea, flatulence and bowel distension may occur as a result of high dosing. Reduce the dose if these symptoms are of concern. If you are on any other medication, please consult with your health professional before taking this product. If symptoms persist or you have any side effects, please contact your health professional.
  • Pregnancy & Breastfeeding. Suitable to take during these times. High dosing of vitamin C to bowel tolerance should be done under the supervision of a health professional during these times.


Each Level 5ml Teaspoonful Contains:

 Vitamin B2 (riboflavin) 3mg
 Vitamin C (ascorbic acid) 700mg
 Vitamin C (from sodium ascorbate) 2850mg
   (equiv. Sodium 372mg)

Also Contains: Natural flavourings and stevia.
No Added: Gluten, dairy, yeast, sugar, artificial colours, sweeteners, flavours or preservatives.


Two pharmacists who saw that current modern pharmaceuticals weren’t providing complete care for their patients, decided to develop the Clinicians range. By investigating the results that conventional medicine had on the body, they created a range of research-based formulations to provide important nutrient replacement for the body.

The Clinicians range may help with a variety of health concerns like their ‘Stress, Sleep and Mood’ range and ‘Ills, Chills and Allergies’ range that includes Allerstop developed for effective allergen support. One of their best sellers Rejuvenate with Hyaluronic Acid is a science-based formula for rejuvenation of skin elasticity, stronger nails and shiny hair.

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Email: [email protected]

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Other Countries Phone: +64 3 265 9758

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Customer Reviews

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Easy to take & tasty - great service from Healthpost Review by
  • star

I've started on Ketogenic Switch diet & take this first thing every morning. I work in a student Hall of Residence with 261 residents + staff and so far no bugs this winter. I think it's a winner myself! Great taste either just in a glass of water; or amidst a smoothie (which I also add Flaxseed oil into). As far as customer service from Healthpost goes, very efficient and I'm very impressed. When next my next lot will definitely be purchasing from Healthpost. Highly recommend both product and website.

A natural alernative to antibiotics Review by
  • star

I was prone to abscesses in my nasal cavity and purchased this product to use instead of ABs - upped the dose to 4 teaspoons on the first day, 3 teaspoons the second, then 2 teaspoons per day for another handful of days and my abscess cleared up without complications. Have continued to use a teaspoon per day to keep my immune system primed and brought with me on a tropical holiday so ward off tummy bugs (successfully - and I have a very sensitive tummy!). No need for doctors, thank you very much!

easy to drink Review by
  • star

this is quick to dissolve and tastes good if you dilute it enough.

Great for my auto immune problems Review by
  • star

I have been using this for many years now as I have an auto immune problem and I wouldn't be without it, especially in the winter. It helps to reduce any symptoms if I am unlucky enough to get the flu or a cold. I mix it with Magnesium powder just before going to bed and it helps to cover the taste of the magnesium.

Great support Review by
  • star

I have used this for a few years now, it is good immune support. I take it through the autumn and winter months to help my body keep the bugs at bay and it seems to work. Tastes good too, either on it's own or mixed in a smoothie.

Tastes great! Review by
  • star

Great taste, so far no illness despite everyone around me getting sick. Great price too

Winter ills Review by
  • star

Started taking Hi-Dose Vit C Powder when I felt a niggle at the back of thy throats signalling a cold was about to strike. Took it every day as prescribed, and then some until all symptoms had gone. Love the taste and a nice change from coffee or tea at work too! Prefer this to chewable tablets.

Brilliant. Review by
  • star

Amazing to keep the household well from a daily dose and brilliant for when the flu, coughs and colds arise. Its very rare these days for our kids to get sick because of this product but recently from getting chilled at sport, we had to increase the dosing to 3x daily to achieve a quick recovery.
We buy in bulk when on special to ensure we never run out because its such a great investment in health.Previously the kids were always sick from low immunity. Thx Healthpost for providing such a great product.

Best Vit C for the whole family Review by
  • star

I have used this product for years as our only Vit C product. A member of our household will die if they ever get pneumonia ( they are at high risk) so any sniffle is dosed with several grams a day of Vit C. Its the best high does C on the market, and $20 cheaper on Healthpost that our local health shop

Excellent product Review by
  • star

I am never without this product in my house. It is the one thing that I believe keeps my family well through the winter months. It is also a must have if you are getting a cold, just up the dose and the body does the rest. I recommend this product.

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