A single tube of SIS Immunity Orange dietary supplement powder, featuring a white and black label with orange accents, set against a light gray background.

A close-up lifestyle shot of a person's hands pouring a white tablet from a black and orange tube into a clear plastic bottle. The person is wearing a silver ring on their left hand, and the background is a dark, blurred interior.

SiS

SiS IMMUNE Multivitamin Tablets

~~£49.99~~ £39.99 Sale

Orange-flavoured effervescent tablets with vitamin C, iron and B vitamins for daily nutritional support.

Quantity Size: Box of 8 Tubes

Single Tube (20 servings) Box of 8 Tubes

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Key Benefits

200mg Vitamin C Per Tablet — Contributes to normal immune function.
Iron Included — Helps support normal immune function and energy metabolism.
Added B Vitamins — Includes B1, B2 and B6.
Effervescent Format — Dissolves in water for convenient use.
20 Tablets Per Tube — A practical everyday supply.

SiS IMMUNE Multivitamin Tablets are effervescent orange-flavoured tablets for athletes and active adults who want a convenient way to supplement their usual dietary intake. The formula combines vitamin C, iron and selected B vitamins in a drink that can be prepared with water.

Each tablet provides 200mg vitamin C alongside 2.5mg iron and BC30™. Vitamin C and iron contribute to normal immune system function, while the B vitamins support normal energy metabolism. With 20 tablets per tube, the format is straightforward to incorporate into a regular routine alongside a varied, balanced diet.

Nutrition & Ingredients

Nutritional values are per tablet; a tube contains 20 tablets.

Orange – one effervescent tablet

Approx. 9kcal per tablet; carbohydrate approx. 0.5g (sugars 0.1g); fat 0g; protein 0g; vitamin C 200mg (250% NRV); iron 2.5mg (18% NRV); fibre 0.1g; salt approx. 0.9g (calculated using total sodium, not added sodium chloride).

Ingredients: Acid (Citric Acid), Acidity Regulators (Sodium Hydrogen Carbonate, Sodium Carbonate), Humectant (Sorbitol), L-Ascorbic Acid (Vitamin C), Inulin, Flavouring, Starch, Anti-Caking Agent (Tricalcium Phosphate), Colours (Beetroot Red, Riboflavin), Ferrous Sulphate (Iron).

Values and formulations are taken from SiS product information. Always check the supplied packaging for the latest ingredient, allergen and nutrition declaration.

Suggested Use & Compatibility

Suggested Use

Dissolve one tablet fully in 500ml water according to the pack directions. Do not exceed the manufacturer’s recommended daily dose.

Suitability

Food supplements should not replace a varied diet. Check the full ingredients and suitability advice before use, particularly if you take medication or have an existing condition.

Why We Choose SiS

We choose SiS - Science in Sport because they create trusted sports nutrition products designed to help athletes fuel, hydrate and recover with confidence. From isotonic energy gels and electrolyte tablets to recovery drinks and advanced endurance fuelling, SiS supports runners, cyclists, triathletes and active individuals before, during and after training and racing.

Science-Led – Developed with a clear focus on sports science, performance nutrition and real-world athlete needs.

Easy to Use – Practical fuelling solutions such as isotonic energy gels that are simple to take during exercise, with no unnecessary complexity.

Endurance Focused – Designed to support sustained energy, hydration and recovery across running, cycling, triathlon and high-intensity training.

Trusted by Athletes – Used by everyday athletes and elite performers who need reliable nutrition when performance matters.

That’s why SiS is part of the North Sports collection — giving you proven sports nutrition to fuel harder sessions, support recovery and perform at your best.