Chocolate, measured to the gram.
100% dark, handmade in London, with the exact doses printed on every pack. Never bitter. No added sugar.
New here? Four bars, one of each.
Try 4 bars for £25
Early Black Friday
Our best price of the year: 10 bars for £45 (usually £55). Subscribers get it first, from Mon 23 Nov.
Dark, and never bitter.
Single-origin Ghanaian cocoa, handmade in London. Low in sugar, with no added sugar in any bar.
Animal ingredients.
Every bar is vegan. The protein comes from peas and amino acids, not dairy.
Protein in one bar.
Muscle Up has 50 g protein and 10 g creatine. Longevity Mix has 50 g protein, 10 g creatine and 12 g glycine.
Creatine increases physical performance in successive bursts of short-term, high-intensity exercise. The beneficial effect is obtained with a daily intake of 3 g of creatine.
Four bars.
£25.
The easiest way to find your bar. One of each, worth £27.96.
- Muscle Up, 50 g protein, 10 g creatine
- Recovery & Sleep, 12 g glycine, about 200 mg magnesium
- Longevity Mix, 50 g protein, 12 g glycine
- Matcha, 4 g Japanese matcha
All four contain peanuts; Matcha also contains cashews and almonds.
Chocolate, measured to the gram.
100% dark chocolate with the exact doses on the front of the pack. Handmade in London.
From £6.99 a bar, 10 bars for £55, free UK delivery over £49
01
100% dark, handmade in London
Smooth, never bitter. Low in sugar, with no added sugar.
02
Vegan
Every bar is 100% vegan, made with plant protein.
03
High protein
Up to 50 g protein in one bar. Longevity Mix has 50 g protein, 10 g creatine and 12 g glycine.
Creatine increases physical performance in successive bursts of short-term, high-intensity exercise. The beneficial effect is obtained with a daily intake of 3 g of creatine.
Seven bars. Every dose on the label.
Each bar starts with dark Ghanaian cocoa and adds a measured amount of one or more functional ingredients. Here is exactly what goes into each one.
Muscle Up
LONDEVITY®, handmade in London
50 gprotein in one bar, high protein
- Inside
- plus 10 g creatine, 5 g leucine and 10 g glycine, with pea protein
- Size
- 80 g bar, contains peanuts
- Price
- £6.99, or 10 for £55
Recovery & Sleep
LONDEVITY®, handmade in London
25 gprotein in one bar, high protein
- Inside
- plus 12 g glycine, 2 g cystine and about 200 mg magnesium (53% of the daily reference intake)
- Size
- 80 g bar, contains peanuts
- Price
- £6.99, or 10 for £55
Longevity Mix
LONDEVITY®, handmade in London
50 gprotein in one bar, high protein
- Inside
- plus 10 g creatine, 12 g glycine, 2 g cystine, 1 g leucine, about 200 mg magnesium, choline, zinc, methylfolate, cinnamon, red fruits
- Size
- 80 g bar, contains peanuts
- Price
- £6.99, or 10 for £55
Matcha
LONDEVITY®, handmade in London
18 gprotein in one bar, source of protein
- Inside
- plus 4 g Japanese matcha, 10 g glycine, 60 g 100% dark chocolate base, dried fruit
- Size
- 80 g bar, contains peanuts, cashews, almonds
- Price
- £6.99, or 10 for £55
Energy Bar
LONDEVITY®, handmade in London
21 gprotein in one bar, source of protein
- Inside
- plus just over half your daily magnesium, B6 and B12: about 200 mg magnesium, 0.74 mg vitamin B6, 1.34 µg vitamin B12, 10 g glycine, sunflower seeds
- Size
- 80 g bar, no nuts in the recipe, from 9 November
- Price
- £6.99, or 10 for £55
Hard Absolute Dark
LONDEVITY®, handmade in London
1ingredient: Ghanaian cocoa
- Inside
- 100% cocoa, nothing else
- Size
- 80 g bar, no nuts in the recipe, from 9 November
- Price
- £6.99, or 10 for £55
Soft Absolute Dark
LONDEVITY®, handmade in London
0 gadded sugar
- Inside
- Dark Ghanaian cocoa, gently sweetened
- Size
- 80 g bar, no nuts in the recipe, from 9 November
- Price
- £6.99, or 10 for £55
Side by side, per bar
The same numbers you'll find on each pack, so you can compare before you choose.
| Per bar | Muscle Up | Recovery & Sleep | Longevity Mix | Matcha | Energy Bar | Hard | Soft |
|---|---|---|---|---|---|---|---|
| Protein | 50 g | 25 g | 50 g | 18 g | 21 g | 9 g | 8 g |
| Creatine | 10 g | – | 10 g | – | – | – | – |
| Glycine | 10 g | 12 g | 12 g | 10 g | 10 g | – | – |
| Leucine | 5 g | – | 1 g | – | – | – | – |
| Cystine | – | 2 g | 2 g | – | – | – | – |
| Magnesium | – | ~200 mg | ~200 mg | – | ~200 mg | – | – |
| Vitamin B6 | – | – | – | – | 0.74 mg | – | – |
| Vitamin B12 | – | – | – | – | 1.34 µg | – | – |
| Matcha | – | – | – | 4 g | – | – | – |
| Sugars | 0.3 g | 0.4 g | 0.4 g | 1 g | 0.3 g | 0.2 g | 0.2 g |
| Bar weight | 80 g | 80 g | 80 g | 80 g | 80 g | 80 g | 80 g |
Amounts per whole bar, from the pack labels. High protein means at least 20% of the bar's energy comes from protein, source of protein at least 12%; protein and sugars are rounded from the per-100 g nutrition table. Longevity Mix also contains choline, zinc, methylfolate, cinnamon and red-fruit extracts. Enjoy as part of a varied, balanced diet and a healthy lifestyle; maximum one bar a day.
What each ingredient is
Plain facts, and the official UK wording where a health claim is authorised for that nutrient.
Creatine
10 g in Muscle Up and in Longevity Mix
A compound made from amino acids, found naturally in meat and fish. Ours is creatine monohydrate.
Creatine increases physical performance in successive bursts of short-term, high-intensity exercise. The beneficial effect is obtained with a daily intake of 3 g of creatine.
Magnesium
About 200 mg in Recovery & Sleep, Longevity Mix and Energy Bar, just over half the daily reference intake
An essential mineral. We use magnesium bisglycinate.
Magnesium contributes to the reduction of tiredness and fatigue.
Vitamins B6 and B12
0.74 mg B6 and 1.34 µg B12 in Energy Bar, each just over half the daily reference intake
Two water-soluble B vitamins.
Magnesium, vitamin B6 and vitamin B12 contribute to normal energy-yielding metabolism and to the reduction of tiredness and fatigue.
Glycine
10 to 12 g in five of our bars
The smallest amino acid, one of the building blocks of protein, with a naturally mild, slightly sweet taste.
Leucine
5 g in Muscle Up, 1 g in Longevity Mix
An essential amino acid, which means the body cannot make it and it has to come from food.
Cystine
2 g in Recovery & Sleep and in Longevity Mix
A sulphur-containing amino acid, formed from two molecules of cysteine.
Matcha
4 g in Matcha
Shade-grown Japanese green tea leaves, ground into a fine powder.
Ghanaian cocoa
The base of every bar; Hard Absolute Dark is 100% cocoa, nothing else
Single-origin cocoa from Ghana, used dark, with no added sugar.
Pea protein
In Muscle Up, Longevity Mix and Matcha
A plant protein, which keeps every bar vegan.
Made by longevity people
Dr Edouard Debonneuil
Co-founder
25 years in ageing science, from lifespan studies in model organisms to founding the International Longevity Alliance, a longevity network active in over 60 countries. He also invented TimeXtension, our biological age assessment.
Lily
Co-founder
Over a decade in the global longevity movement and founder of the London Longevity Clinic. Lily turns the science into something people actually enjoy every day.
Measured, not marketed
We print the dose of every functional ingredient on the pack, with the full ingredients and nutrition table on the back. If it isn't on the label, we don't say it.
LONDEVITY® is a food, not a medicine. If you are pregnant, breastfeeding, taking medication or have a medical condition, speak to your GP or pharmacist first.
- No added sugar in any bar.
- Vegan, with no emulsifiers.
- Allergens: Muscle Up, Recovery & Sleep, Longevity Mix and Matcha contain peanuts; Matcha also contains cashews and almonds. Energy Bar, Hard and Soft Absolute Dark have no nuts in the recipe. All bars are made in a kitchen that also handles peanuts, nuts and sesame.
- One bar a day, maximum, as part of a varied, balanced diet.
Meet Dr Edouard Debonneuil, our co-founder and longevity scientist (1 min)
Our story
Why we made LONDEVITY®
We are continuously ageing… It's a continuous process. The good news is that it's long, so prevention matters.Dr Edouard, co-founder of LONDEVITY®
LONDEVITY® was founded in London by Lily, who has spent more than ten years in the longevity field and founded the London Longevity Clinic, and longevity scientist Dr Edouard, who has worked on lifespan research for over 25 years and founded the International Longevity Alliance.
Capsules and powders are hard to keep up, so we made the daily routine something you look forward to: 100% dark chocolate with well-studied nutrients such as glycine, creatine and magnesium, at the amounts printed on every pack.
From our founders
Meet Dr Edouard Debonneuil, our co-founder and longevity scientist. Every bar is developed by our founders and handmade in London, with the exact doses printed on the pack.
Read the scienceEvery bar
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Taster Pack: 4 bars to try
Regular price £25.00Regular price -
Muscle Up: 100% dark chocolate bar
Regular price From £6.99Regular price -
Recovery & Sleep: 100% dark chocolate bar
Regular price From £6.99Regular price -
Longevity Mix: 100% dark chocolate bar
Regular price From £6.99Regular price -
Matcha: 100% dark chocolate bar
Regular price From £6.99Regular price -
Energy Bar: 100% dark cocoa bar
Regular price From £6.99Regular price -
Hard Absolute Dark: 100% cocoa bar
Regular price From £6.99Regular price -
Soft Absolute Dark: dark cocoa bar
Regular price From £6.99Regular price -
85% Dark Functional Chocolates Gift Box
Regular price From £18.00Regular price
Christmas 2026
Gifts that become a daily ritual
Handmade in London. Order by 16 December for UK Christmas delivery.
£34 · gift-wrapped
Christmas Gift Set
Two boxes of functional dark chocolates with a handwritten card.
Frequently Asked Questions
What makes it different from normal chocolate?
Each bar is 100% dark Ghanaian cocoa with no added sugar, plus functional ingredients such as glycine, creatine, cystine, magnesium and B vitamins (they vary by bar), with the amounts printed on every pack. Enjoy one bar a day as part of a varied, balanced diet and a healthy lifestyle.
Can I have it with other supplements or medication?
LONDEVITY® is a food, but if you take medication, are pregnant or breastfeeding, or have a medical condition, check with your GP or pharmacist first.
What is your return policy?
Unopened items can be returned within 14 days of delivery. If your first order is not for you, contact us within 30 days. Anything damaged or wrong: email customer@londevity.com within 48 hours with a photo. See our Returns & Refunds policy.
Is it vegan? What about allergens?
All our bars and our coffee are 100% vegan and our bars are gluten free. Muscle Up, Recovery & Sleep, Longevity Mix and Matcha contain peanuts, and Matcha also contains cashews and almonds. Energy Bar and Absolute Dark have no nuts in the recipe, but everything is made in a kitchen that also handles peanuts, nuts and sesame.
How much is delivery and how long does it take?
UK delivery with Royal Mail: free on orders over £49, £3.80 below that. Dispatched within 1–3 working days. For Christmas, order by 16 December.
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