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

£6.99

Daily immune support for active lives — SiS IMMUNE Multi Vitamin Tablets deliver 200mg Vitamin C, 2.5mg Iron, BC30™ and added B vitamins in a refreshing orange drink, helping support immune function during busy training blocks.

Quantity Size: Single Tube (20 servings)

Single Tube (20 servings) Box of 8 Tubes

Product variants

Quantity

Free UK delivery over £50
Secure Checkout
30-day returns
Need help choosing? Contact our team

Key Benefits

Immune Support Formula – Contains Vitamin C and Iron to support normal immune system function.
200mg Vitamin C Per Tablet – Helps support immune function and contributes to the reduction of tiredness and fatigue.
2.5mg Iron Per Tablet – Supports normal energy levels, focus and immune function.
Contains BC30™ – Included to support digestive health, immune health and protein absorption.
Added B Vitamins – Includes Vitamin B1, B2 and B6 to support energy and protein metabolism.
20 Tablets Per Tube – Convenient daily support in an easy-to-store format.
Low-Calorie Drink – Just 9 calories per tablet.
Easy 500ml Mix – Add one tablet to 500ml of water and allow it to dissolve.
Orange Flavour – A refreshing taste for daily use or after training.
Ideal for Active Lifestyles – Suitable for runners, cyclists, gym-goers and endurance athletes.
Informed Sport Certified – Tested to provide assurance for athletes.

The SiS IMMUNE Multi Vitamin Tablets are convenient effervescent immune support tablets designed for athletes and active people who want to support everyday health alongside training. Ideal for running, cycling, gym training, endurance sport and busy lifestyles, each tablet dissolves easily in water to create a refreshing orange-flavoured vitamin drink.

Each serving provides 200mg Vitamin C and 2.5mg Iron, nutrients that contribute to the normal function of the immune system. The formula also includes BC30™, plus added B vitamins including Vitamin B1, B2 and B6, helping support energy metabolism, protein metabolism and general training recovery as part of a balanced diet and healthy lifestyle.

With 20 tablets per tube and only 9 calories per serving, SiS IMMUNE is a practical option for daily use, post-training support or periods of heavy exercise when immune function can be under increased demand. Simply add 1 tablet to 500ml of water, allow it to dissolve, and enjoy an easy-to-use immune support drink from a trusted sports nutrition brand.

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.