What is Sustained Release Vitamin C?

  • Suitable for Vegetarians
  • Suitable for Vegans
  • Gelatin Free
Vitamin C is an essential vitamin however the body does not store Vitamin C, so a regular daily intake is required. Each 500mg (625% NRV) tablet is made using a special process that ‘meshes’ the vitamin with a plant cellulose so that it breaks down gradually to release vitamin C. Zinc is also included as it contributes to the normal function of the immune system.

Because Vitamin C is a water-soluble vitamin, it is not stored in the body for very long. This means that a regular intake is needed to keep the levels topped up. The benefits of Vitamin C are many and varied, they include; the support of the immune system, the reduction of tiredness and fatigue and the normal function of the nervous system.

Key Features

  • Steady release of vitamin C throughout the day.
  • Made using a special process for slow release.
  • With added zinc for immune system support.

Recommended Intake

One to two tablets a day with food.

Tablet / Capsule Information

  • Width 20.1mm
  • Height 8.7mm
  • Shape Oval

Note: Colour of the tablet shown here may differ slightly. This has no effect on the quality of the product and is part of the natural manufacturing process. Tablet not shown at actual size.

Typical values per Tablet   % NRV
Vitamin C 500mg 625
Zinc 5mg 50
Show More Show Less

NRV:Nutrient Reference Value RE: Retinol Equivalent a-TE: Alpha Tocopherol Equivalent NE: Niacin Equivalent µg: Micrograms

Recommended Intake

One to two tablets a day with food.


Vitamin C Prep. (Ascorbic Acid, Hypromellose), Bulking Agent: Microcrystalline Cellulose, Bulking Agent: Dicalcium Phosphate, Hypromellose, Coating (Hypromellose, Glycerin), Stearic Acid, Anti-Caking Agent: Silicon Dioxide, Zinc Oxide, Magnesium Stearate.

Additional Information

If you are taking any prescribed medication or have any medical conditions always consult your doctor or pharmacist before taking vitamins or supplements. 
Keep out of sight and reach of young children. 
Do not exceed stated recommended intake. 
Food supplements must not be used as a substitute for a varied and balanced diet and a healthy lifestyle. 
Store in a cool, dry place. 
If you experience an adverse reaction, stop taking the supplement and seek medical advice.

Typical values per tablet   % RI

%RI = percentage of reference intake of an average adult

Independent Reviews for Vitamin C Sustained Release - 500mg Vitamin C plus 5mg Zinc

Overall Rating: 4.64 / 5 stars, based on 636 reviews Below you can find the latest 25 reviews. To access the full list please click here

24 May 2017

They seem to work as suggested

It's great to hear how pleased you are with our products.


24 May 2017

Prompt delivery as usual. Can recommend.

We appreciate you taking the time to leave a review - as above - Nicola

18 May 2017

Because it is a very good product

It's great to hear you are pleased with the products.


11 May 2017

Good delivery and clear packaging

We are delighted to hear you are pleased with our letterbox friendly packaging.


10 May 2017

This is a new purchase for me and I have been very pleased with them

28 April 2017

I am advised that these will improve my immune system, although I already have a diet rich in Vit.C.so I am not certain of the additional benefits.

Thank you for your feedback - You may find the below article of benefit.


Alternatively, you may wish to call our free phone number where one of our Product Advisor's will be pleased to advise you further.


24 April 2017

Ditto! Serves my purpose and health

Thank you for taking the time to share your feedback. 


24 April 2017

Have also used them in the past and found them very good

20 April 2017

One never knows how much good these things do, but I tend to hav faith in them.

We appreciate you taking the time to leave a comment.

19 April 2017

Been using them for many years now - tried other brands and not as good

Thank you for taking the time to share your feedback.


12 April 2017

good product and I am allergic to oranges so ideal for me.

12 April 2017

As a smoker need Vit C. Like the slow release of product.

We're happy to hear the product is proving beneficial.

- Sophie

02 April 2017

Again, so easy to purchase

Thank you once again for your kind feedback.

31 March 2017

good product I have been using it for a long time

30 March 2017

Great products and service as always.

Thank you for leaving a positive review - It's great to hear you are pleased with our selection of products we have available.


28 March 2017

They work great. Keep colds away.

Thank you for your feedback.


27 March 2017

Nice and easy to order online and quick delivery

Thank you for leaving a positive review - It's great to hear you find our website easy to use and your items are being delivered promptly.


17 March 2017

Easy to swallow tablets, no after taste

We appreciate you taking the time to share your feedback.


16 March 2017

It seemed a good idea as I have been ill for 6 week with a flu virus and I have improved greatly but I also have had a bout of arthritis whilst I was taking it so have left it off for a while to see if it improves .

Thank you for sharing your experience with us.

13 March 2017

As required delivered promptly

Thank you for your feedback. We are pleased to hear that your items have arrived quickly.

12 March 2017

Been taking these for some time now as recommended

Thank you for your review.

Sarah B

05 March 2017

I've been taking these for some time and find them excellent.

We are pleased to hear that you are happy with these tablets.

01 March 2017

I take to lessen the effects of colds, I get less than I used to as I work as a gardener instead of in an office now.

It's lovely to hear how well the product is working for you.


26 February 2017

Bought for my husband ,so I can't speak from personal experience but he is happy.