Fourfive Plus Hydro Immune Support electrolyte sachet in orange packaging, displayed with Informed Sport tested and Good Food 2025 award badges.

Orange hydration package with text about electrolytes and health benefits on a beige background

Box of immune support hydro packets with text on a light background

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Hydro Hydration Immunity Sachets

From: £33.00

daily defence
immune support
Vitamin C + Zinc
Wellmune®

Our Immunity sachets blends 5 key electrolytes with immune-boosting powerhouses; Vit C, D3, and Zinc, plus 250 mg of clinically backed Wellmune® and Chaga Mushroom to help you stay hydrated and defences high.

Flavour:

Orange & Mango

Pack:

Save £9 30 Daily Sachets
7 Daily Sachets
save £26 90 Daily Sachets
Save £50 180 Daily Sachets

subscription

30% off your first 3 orders
20% off after
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Hydro Hydration Immunity Sachets

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trusted by athletes

60-Day Confidence Guarantee

formulated by scientists

100% natural ingredients

independently lab-tested

vegan & cruelty free

trusted by athletes

60-Day Confidence Guarantee

formulated by scientists

100% natural ingredients

independently lab-tested

vegan & cruelty free

trusted by athletes

60-Day Confidence Guarantee

formulated by scientists

100% natural ingredients

independently lab-tested

vegan & cruelty free

Fuel Better, Hydrate Smarter

5 Key Electrolytes

Over 900mg of advanced electrolytes to ensure optimal hydration.

Wellmune®

Supports your gut-brain axis, enhancing overall immune health.

Vitamin C, D and Zinc

Immunity powerhouses ensure your body has the nutrients it needs to stay resilient.

Chaga Mushroom

Nature’s most potent immune booster.

Our community

"Filming, parenting, and travel can be draining—fourfive Hydro helps keep my energy up."

- Stuart Broad | Ex-England Cricketer

"Hydro helps me stay at the top of my game and feeling my best"

- Jamie George | England Rugby Player

"Finally a hydration tablet that doesn't contain artificial sweeteners, is scientifically formulated for hydration AND tastes great!"

- Ben Spencer | Saracens Nutritionist

"Optimal hydration for our athletes is key, and fourfive's hydration tablets have proven to be a game-changer during intense training sessions".

- Amy Gore | Leicester Tigers Nutritionist

From flights to filming, fourfive hydration keeps me sharp and feeling my best.

- Lee Mckenzie | TV Presenter & Journalist

every ingredient matters

5 KEY ELECTROLYTES

Restore sodium, potassium, magnesium, calcium and chloride lost through sweat to support hydration and muscle function.

WELLMUNE®

A clinically studied beta-glucan that supports immune and gut health by working with your body’s natural defences.

VITAMIN C & D3

Essential vitamins that support immune function, cell protection, and healthy recovery.

CHAGA MUSHROOM

Packed with antioxidants that protect cells and boost immune resilience. Helps maintain energy and vitality day to day.

ZINC

A trace mineral that plays a key role in immune system strength, cellular repair, and normal immune reactions.

it's your shield

Our Immune Support Hydration Sachets, designed to keep you hydrated and protected. Featuring 5 essential electrolytes, it replenishes your body while supporting vital immune functions.

Packed with immunity powerhouses like Vitamin D3, Vitamin C, and Zinc, this formula ensures your body has the nutrients it needs to stay resilient. We've also included 250mg of Wellmune®, to support your gut-brain axis, enhancing overall immune health.

For an extra edge, we’ve infused Chaga Mushroom, nature’s most potent immune booster, to keep you feeling strong and ready to tackle the day. Perfect for those who prioritise hydration and immunity in one powerful blend.

George Kruis and Dom Day sat beside Heineken Champions Cup

founded by world-class athletes

Our founder's George Kruis and Dom Day are ex-international rugby players who firsthand the demands of high performance. Combining their elite sports experience with cutting-edge science, we've created a blend that helps you stay hydrated, energised, and mentally sharp, no matter what challenges you face.

no hype. just real results.

What we leave out

Only what your body needs—nothing it doesn’t.

Artificial Sweeteners
Calcium Carbonate
Synthetic Colours
Sugar
Gluten
Dairy
Fillers and binders
Banned Substances

Sport Banned Substance Tested Every Batch Guarantee

The gold standard

Informed Sport testing ensures your supplements are free from banned substances. With rigorous testing, athletes and professionals can trust they’re using safe and clean supplements. The Informed Sport seal offers peace of mind, knowing every dose is contaminant-free and trusted by the best.

fourfive

Others

Immunity Defence

Potent Vitamin C & D

Chaga Mushroom

trusted by athletes

no caffeine

no artificial sweeteners

no bulking agents

Product information

Power up your hydration with 5 key electrolytes plus Vitamins D3, C and Zinc. With 250mg Wellmune® to support the gut brain axis and Chaga mushroom for a natural edge, it’s built to keep your system strong and ready for more.

ingredients

Chicory Root Fibre, Pink Himalayan Salt (Sodium Chloride), Acidity Regulator (Citric Acid), Vitamin C (Sodium L-ascorbate), Tripotassium Citrate, Wellmune® Bakers Yeast Beta Glucan, Chaga Mushroom Sclerotium Extract, Aquamin® MgAG (Magnesium Hydroxide), Natural Orange Flavouring, Flavouring, Aquamin® F (Calcium (from Calcareous Marine Algae (Lithothamnion sp.)), Colour (Beta Carotene, Red Beet Extract), Sweetener (Steviol Glycosides from Stevia), Rice Fibre, Zinc Bisglycinate, Vitamin D3 (Cholecalciferol)

shipping & returns

FREE shipping on all subscription orders and FREE shipping on one-time purchases over £40+. Next day delivery £5.99 when ordered before 7pm Mon-Fri (excludes bank holidays).

How to use

Simply dissolve one sachet in 500ml of water and sip throughout exercise or activity, and after exercise to rehydrate by replacing lost electrolytes through sweating.

Dissolve one sachet in 500ml of water

Sip throughout exercise or activity

Rehydrate by replacing lost electrolytes through sweating

Take 1 sachet per day

FAQs

What are Hydro Hydration Immunity Sachets?

Hydro Hydration Immunity Sachets are advanced hydration drinks designed to support both fluid balance and immune health in one convenient formula.

They combine essential electrolytes with targeted immune-support nutrients to help you stay hydrated, resilient, and ready to take on busy days, travel, training, or seasonal challenges.

How are they different from standard hydration products?

Most electrolyte drinks focus purely on hydration.

Hydro Hydration Immunity Sachets go further by supporting:

Immune system resilience
Daily nutrient intake for immune function
Gut-immune connection
Hydration and mineral replenishment

It’s a dual-purpose formula - hydration plus immune defence.

How do they support immunity?

The formula includes key nutrients known to contribute to normal immune function, including Vitamin D3, Vitamin C, and Zinc.

It also contains Wellmune®, a clinically studied beta glucan that helps support immune readiness and the gut-brain-immune axis - an important connection in overall immune health.

Together, these ingredients help your body respond effectively to daily stressors.

What does Chaga do?

Chaga mushroom is traditionally used for its immune-supporting properties.

It’s included to provide additional antioxidant and immune support, helping you stay strong during demanding periods, seasonal changes, or times of increased stress.

Is it vegan and allergen-free?

Yes. Hydro Hydration Immunity Sachets are 100% vegan and free from common allergens, making them suitable for a wide range of dietary needs and lifestyles.

If you have any concerns then please contact contact@fourfive.com.

Are these only for when I am ill?

No. This is about supporting hydration and everyday immune function, not treating illness. It is designed as a proactive daily habit.

Will it break a fast?

No. Each sachet contains fewer than 10 kcal and is sweetened with stevia, meaning it has minimal impact on blood sugar levels and is suitable for most fasting routines. However this can vary depending on your individualised approach.

When should I use Immunity sachets?

For best results, take:

Daily during high-stress or busy periods
During travel
Through seasonal changes
When increasing training load

Simply mix with water for convenient hydration and immune support in one step

Are they Informed Sport tested?

Yes, the sachets have been tested and approved by Informed Sport.

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Hydro Hydration Immunity Sachets

Hydro Hydration Immunity Sachets

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Fuel Better, Hydrate Smarter

Our community

every ingredient matters

it's your shield

founded by world-class athletes

no hype. just real results.

What we leave out

The gold standard

How to use

Simply dissolve one sachet in 500ml of water and sip throughout exercise or activity, and after exercise to rehydrate by replacing lost electrolytes through sweating.

FAQs