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SiS Immune Tablets - 20 Tablets (Orange)

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Designed to support & maintain immune function during and after exercise

Low‐calorie rehydration drink with vitamin C and Iron

Delivery Details

UK Delivery Information*

  • Free Standard Delivery over £35 (2-4 Days)
  • Standard UK Delivery (2-4 Days) - £3.99
  • UK Next Day Delivery (Restrictions Apply) - £4.99
  • SiS Premier - Unlimited Next Day Delivery for 1 Year - £9.99
Full Details & International Delivery


*excludes special offers

Product Information

About SiS Immune

SiS Immune is designed to support and maintain immune function during and after exercise.

As an effervescent tablet that readily dissolves in plain water, it represents a highly practical approach to support your immune system after exercise.

Vitamin C (200mg) and Iron (2.5mg) are known to contribute to the maintenance of the normal function of the immune system during and after intense physical exercise in addition to your RDA.

Key Features:

  • • 200mg of Vitamin C
  • • 2.5mg of Iron
  • • Sodium to help promote hydration
  • • Contents: 20 x 4.3g Tablets

Product Uses
Recommended Usage

Consume up to 1 tablet per day in addition to a balanced diet and a healthy lifestyle. Add one Immune tablet to 500ml of water and let it dissolve. Once prepared consume within 24 hours.


Benefits of SiS Immune

Heavy training is known to impact the immune system, suppressing it for 3‐72 hours post-training. This can lead to a higher incidence of upper respiratory tract Infections, impacting an athletes health and their ability to train.

Excessive vitamin intake can suppress the training response. SiS Immune is designed to be at a level which supports athlete health without compromising training benefits.

Informed Sport Registered

Our complete product range is developed using a world-class approach to banned substance testing, providing assurance for athletes. For more information on Informed Sport & our unique world class approach, click here.

Suitable For: Vegans, Vegetarians, Lactose free, Gluten Free, Wheat Free, Nut Free, Soya Free

Nutritional Info
Typical ValuesPer 100gPer Tablet 4.3g
of which saturates0.0g0.0g
of which sugars0.6g0.1g
Vitamin C200mg (250% NRV)
Iron2.5mg (18% NRV)

NRV** Nutrient Reference Value

Salt* Total Sodium content x 2.5. Salt as NaCl is nil per tablet.



Citiric Acid, Acidity Regulator (Sodium Hydrogen Carbonate, Sodium Carbonate), Sorbitol, Vitamin C (4.95%), Inulin, Natural Flavout, Starch, Tricalcium Phosphate, Sweetener (Sucralose), Maltodextrin, Natural Colour, Iron Sulphate (0.18%), Vitamin B2 (Riboflavin).

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Why should I take this?


Vitamin C and Iron are known to contribute to the maintenance of the normal function of the immune system during and after intense physical exercise.


How is this different to other Vitamin C tabs?


SiS Immune contains 200mg of vitamin C and 2.5mg of Iron, which along with a normal diet provides the correct amount to support immune function post-­?exercise. This is preferred over tabs containing well over the RDA of antioxidant vitamins, which can suppress your response to training.


Wouldn’t I be better off taking a multi-­?vitamin?


SiS Immune also contains key electrolytes, which can aid hydration after exercise as well as providing what the body needs to support immune function. A multi-­?vitamin cannot do this, and may contain elements that your body doesn’t need if you are not deficient in them.


Does this make a fizzy drink?


When you drop the immune tab in the water, it will fizz until fully dissolved. After this you are left with a still drink.


Do they taste salty?


No, they are available in orange flavour and have a light taste.


What is the difference between this and SiS GO Hydro?


SiS Immune should be taken post exercise to support and maintain immune function while rehydrating. SiS GO Hydro should be taken during exercise to maintain hydration only, when energy is not needed.


Can I mix this with GO Electrolyte or GO Hydro to get all the benefits?


No, this would provide too much sodium, beyond the optimum levels.

Verified Reviews

Rated 4.8 out of 5 based on 19 Reviews
Stuart Hall

Good flavour, I have used regularly for the past 12 months and have avoided low level colds - probably not all down to the product but I think it has helped

Richard horwood

Brilliant product 👍🏻

Mark Quinn

Love these.....don’t believe they’ll offer me any immune advantage though!

Darryn Mitchell

Best tablets I have ever had


Great value for money - Good taste.

Tracy O Reilly

Nice taste easy to drink,drink after excercise to boost immune system

Paul M

I took these when the family was ill = I was fine!


Great tabs for during training, while being on altitude, or feeling not 100%.



Steve Bones

First time I have used them I was really surprised how good they tasted.


Tasty and full of natural energy. I don’t ride without them!

Oliver Jackson

Great taste and dissolves well

Mr olivier salmon

Great taste. Hard to measure the impact though.

Brian Muir

Tasty orange flavour and seems to keep colds at bay

Mr Allinson

Taste fine and no problem with stomach


tried them last year, felt good all winter so lets say it was them.....

Stijn Van den Bosch

Good taste, easy to use .

Richard Smout

Ideal for when ur body is low and in need of a boost

Graham Wilson

Very over priced, it is only your daily dose of vitamin C and iron. You can buy these from most chemist/supermarket for only 99p. Come on, price this product properly.