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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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.

Product Specifications

Product: SiS IMMUNE Multi Vitamin Tablets
Product Type: Effervescent immune support vitamin tablets
Format: Dissolvable tablet tube
Flavour: Orange
Servings Per Tube: 20 tablets
Pack Options: Single tube or 8-pack box
Serving Size: 1 tablet
Mixing Instructions: Add 1 tablet to 500ml of water and allow it to dissolve
Best Consumed: Within 24 hours once prepared
Vitamin C Per Tablet: 200mg
Iron Per Tablet: 2.5mg
Calories Per Tablet: 9 kcal
Added Ingredients: BC30™
Added Vitamins: Vitamin B1, Vitamin B2 and Vitamin B6
Primary Use: Immune support during and after intense exercise
Best For: Running, cycling, gym training, endurance sport, heavy training blocks, active lifestyles and daily immune support
Suggested Use: Consume up to 1 tablet per day alongside a balanced diet and healthy lifestyle
Dietary / Certification Notes: Informed Sport certified
Key Features: 200mg Vitamin C, 2.5mg Iron, BC30™, added B vitamins, low-calorie formula, orange flavour and easy 500ml bottle mix

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.