The One Box Challenge

One Box.
One Simple Swap.

Try the One Box Experience — premium coffee and tea made with organic functional mushrooms. Replace your usual daily cup with Longevium for one full box, and taste the difference for yourself.

Start Your Experience Learn More
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Why we started Longevium

Why Longevium

Functional Mushroom Coffee & Tea, Made Properly

Every cup is made with organic Ganoderma (Reishi) from shell-cracked spores, blended into premium coffee or tea — a richer, smoother take on your daily ritual.

Premium Organic Ingredients

100% certified organic coffee and tea, with organic Reishi in every blend.

Naturally Low-Acidity

A smooth cup at around pH 7, without the sharpness of ordinary coffee.

Real Functional Mushrooms

Made with organic Ganoderma (Reishi); select blends also feature Cordyceps and Lion's Mane.

Caffeinated or Caffeine-Free

From bold black coffees to caffeine-free red tea and cocoa, there's a cup for every moment.

An Easy Daily Ritual

One sachet, hot water, done. No machine, no queue.

Made for Every Day

Vegan, gluten-free and non-GMO; a simple swap for your usual cup.

Getting Started

How Do I Start My Experience?

Three simple steps to begin.

1

Choose Your Blend & Order

Browse our collection of Reishi coffees, teas and trial packs. Whether you prefer a bold black coffee or a soothing green tea, there's a blend for your one box experience.

Shop Now
2

Receive Your Box

We ship across the UK and internationally. After you order, sit back and relax — your box arrives within a few business days. Our team typically responds within 24 hours.

Contact Support
3

Brew Your First Cup

Get the kettle boiling, grab your favourite mug and pour in the full sachet. Notice the aroma, the smoothness, and how easily it fits into your routine.

Your Box Challenge Journal

Track Your Experience

A simple, private way to note how you feel as you go through your box. Set your baseline today, and we'll email you a reminder to check back when your box is done.

This is a personal reflection tool to track your own experience during the challenge. It is not a health assessment and makes no claim about the effects of any product.

Our Collection

Our Product Line

All blends are made with 100% certified organic Reishi.

ROYAL BLACK
Gourmet Royal Black Coffee
£43.50
KING OF COFFEE
King of Coffee
£39.50
GREEN TEA
Organic Green Tea
£29.50
RED TEA
Red Tea with Cordyceps
£29.50
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Best Sellers

Our Most Popular Blends

Two blends our customers keep coming back to, box after box.

Organic King of Coffee — £39.50

A deep, rich and bold Arabica coffee made with organic Reishi spore powder, from shell-cracked spores.

Order King of Coffee

Red Tea with Cordyceps — £29.50

A delicious red tea combined with Cordyceps and organic Reishi — perfect for those who prefer a caffeine-free option.

Order Red Tea
Preparation

Brew the Perfect Cup

Add one full sachet to your mug, pour in freshly boiled water, stir, and adjust the water to your preferred strength. Using alkaline or filtered water makes it taste even smoother. For espresso and Nespresso-compatible capsules, brew as you would any espresso.

FAQ

Common Questions

How does the One Box Experience work?
It's simple: for the length of one full box, swap your usual daily coffee or tea for Longevium. We recommend switching fully rather than mixing, so you can enjoy the taste on its own. Many customers make it their regular daily ritual, box after box — the key is consistency, so give the full box a go.
How should I drink it for the best experience?
Enjoy it first thing, in place of your usual cup, and adjust the water to your preferred strength (see our brewing guide). Try it black or with your choice of milk, and explore the range — from bold black coffees to caffeine-free red tea and cocoa — to find your favourite.
Are your products suitable for daily use?
Yes — they're made for regular daily use as part of a varied, balanced diet and healthy lifestyle. All products are tested for heavy metals, mould and pesticides for quality and consistency.
Can I take your products with other supplements or medications?
If you're taking medication, pregnant, breastfeeding, or have a medical condition, please consult a qualified healthcare professional before using our products. Our beverages are functional foods and are generally well-tolerated alongside most supplements.
How does shipping work?
We ship across the UK, with international delivery by request. Orders are processed in 1–2 days and typically arrive within 2–4 business days. Enjoy free UK shipping on orders over £99.
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