Skip to product information
1 of 14

The Blind Experiment: 12 Weeks, Real vs Lookalike

The Blind Experiment: 12 Weeks, Real vs Lookalike

A 3-month placebo-controlled test of our protocol, on you

Regular price £300.00
Regular price Sale price £300.00
Sale Sold out
Taxes included. Shipping calculated at checkout. 10 boxes+ shipping free

🚚 Free UK delivery over £49 · Order by 16 Dec for Christmas

Join The Test
🔒 Secure checkout
🚚 Free UK delivery on orders over £49
🎁 Gift message? Add it in your basket
🌍Ghanaian cacao
🍃No added sugar
🌱100% vegan
✋Handmade in London
About this chocolate, ingredients and allergens

Here, we propose You to study if our Londevity Protocol is Good For You, using the science way

What is the science way?
You take the longevity protocol during close to 3 months, but the first half is placebo or the second half. What half? You don't and we don't know, until you have been tested for various health parameters before, between the two halfs, and after.

Wait, let me decompose this
- We have started to measure people before-after taking our chocolate-only protocol, but not versus placebo. Conclusions: health seems improved. Though: may it be because the consumers feel they should be healthy after the protocol and this influences their health test results? Because taking the protocol made them more careful about their health? Or because we measured a bit differently, being convinced that they are in better health?
- Here,
a) during the first half, you don't know if you are under placebo so.. you don't know if you should feel better. Probably you will take more care of your health, but this similarly whether you are under placebo or not, because you don't know. And we, the measurers, don't know either so we are not enclined to be biased when measuring you.

Is it a clinical trial?
No, this is a N-of-1 trial: you are not average, the goal is to see what it does to YOU. Now, if there are enough persons doing N-of-1 trials, we'll make statistics (stats without identifying anyone) and this is Community statistics. Good, but not enough to for health claims/reimbursments etc (it would require more careful selections of individuals at first)

Any reason not to do it?
- The placebo contains a bit of salt, to mimmic the taste of our londevity chocolates (potassium in it, more precisely). So if you have a form of hypertension that requires not to take salt, better avoid it.
- If you have lately been taking our protocol every day lately, chances are that there is not more to gain.
- You will be paying "for nothing" for half of that testing period. Well, not nothing: 1. chocolate, coffee, and not bad things inside (but no Superfood); 2. you will be given a lifetime advantage: the same cost for your remaining life! Yes, we want to encourage those who are in the same boat as us, advancing science.
- Otherwise, no particularly reason compared to taking our londevity chocolates

How to we measure you?
- IF you are or can come to Paris or London, we measure you free of charge with the TimeXtension kit, a non-invasive kit designed to assess overall health in many ways (that was validated scientifically in various ways, and notably applied to several hundred persons)
- Otherwise, we can sell you the kit at a discount price of £250 (plus shipping feels) instead of £300. It is a kit that you can then freely use as many times as you want and on as many persons as you want, because there are no renewables to buy, so it used a lot it is extremely cheap. We will organize the needed calls with you to accompany you in the measures, don't worry.
- If you have any other measures (Whoop, Blood tests, other), wonderful. What matters though is that the measuring system is the same before the first half of the test, between the two halves and after the second half.

Any other question? Contact us at customer@londevity.com We will add here questions and answers that seem relevant to all.
Cheers

Handmade in London · Stocked by around 100 independent shops · Free UK delivery over £49

🔬

Developed by Dr Edouard, a scientist with 25 years in longevity research and founder of the International Longevity Alliance

📜

Our patent filings FR2514450 and FR2515116 (France)

🇬🇧

Handmade in London in small batches · sold in around 100 independent UK shops and pharmacies

View full details

FAQs

Who is LONDEVITY® for?

Anyone who wants a daily habit that is good and genuinely enjoyable: busy people who don't stick with capsules, people who train, and anyone looking for a thoughtful gift. Enjoy it as part of a varied, balanced diet and a healthy lifestyle.

How much should I have?

Bars: one bar a day, maximum. Gift boxes: four pieces a day. Coffee: one cup (12 g) a day. Exact amounts are on each pack.

Is it a supplement or medicine?

No. It is a food: dark chocolate (or coffee) with functional food ingredients. It is not intended to diagnose, treat, cure or prevent any disease. If you are pregnant, breastfeeding, taking medication or have a medical condition, speak to your GP or pharmacist first.

Is it vegan? What about allergens?

All our bars and our coffee are 100% vegan; our gift boxes are not. Muscle Up, Recovery & Sleep, Longevity Mix and Matcha contain peanuts; Matcha also contains cashews and almonds. Energy Bar and Absolute Dark have no nuts in the recipe, but all our products are made in a kitchen that also handles peanuts, nuts and sesame. Our bars contain no wheat and are gluten free.

How much sugar is in it?

Our bars have no added sugar. Most contain under 0.5 g sugar per 100 g; Matcha has about 1.3 g per 100 g from its dried fruit. The exact figure is on every label. The coffee has no added sugar. The 85% gift box contains some sugar from the chocolate: see its label.

Does it make a good gift?

Yes. The Christmas Gift Set comes gift-wrapped with a handwritten card, and you can add a gift message to any order in the gift message box in your basket. Order by 16 December for UK Christmas delivery. See the Christmas Gift Guide.

Where is it made and where does the cacao come from?

Handcrafted in small batches in London, with single-origin cacao from Ghana.

Delivery and returns

Free UK delivery with Royal Mail on orders over £49 (£3.80 below). As our bars are food, we can't accept returns unless your order arrives damaged or faulty. Something wrong? Email customer@londevity.com within 48 hours with a photo and we'll put it right. Full returns policy.

What's inside

Focus

Your morning coffee, upgraded

⭐ Real black coffee.

⭐ 150 mg L-theanine, an amino acid naturally found in tea.

⭐ 250 mg choline.

Performance

For training days

⭐ 3.1 g creatine: creatine increases physical performance in successive bursts of short-term, high-intensity exercise (the effect comes with 3 g a day).

⭐ Ceylon cinnamon, for a warm, rounded flavour.

Glycine and magnesium

For a calmer cup

⭐ 4.1 g glycine, an amino acid the body uses to make glutathione.

⭐ Magnesium bisglycinate: magnesium contributes to the reduction of tiredness and fatigue.

Minerals

Smoother on the stomach

⭐ 300 mg calcium and potassium citrate: calcium and potassium contribute to normal muscle function.

⭐ They also soften coffee's natural acidity.

Full ingredients and nutrition

Clinically dosed ingredients

Designed around evidence-based ranges used in human studies:

Creatine — 3.5 g
Supports strength, ATP production, and cognitive function.

Leucine — 3 g
Key trigger for muscle protein synthesis.

Glycine (2.8 g) + Cysteine (1 g)
Supports glutathione production, detox pathways, and recovery.

Chia + flax — 5 g
Provides fiber and omega-rich compounds for inflammation balance.

Inulin / acacia fibre — 1 g
Prebiotic support for gut microbiome.

Potassium citrate — 1 g
Supports hydration and cellular signaling.

Magnesium bisglycinate — 0.3 g
Supports muscle function, recovery, and nervous system balance.

Fruiting-body mushroom blend — 1.3 g
Lion’s mane (neurogenesis) + cordyceps (oxygen utilization & performance).

Cinnamon — 0.5 g
Supports glucose metabolism.

Red fruit extracts — 0.5 g
Polyphenols for cardiovascular and antioxidant support.

Multivitamin-mineral complex — 0.5 g
Broad micronutrient coverage, including vitamin D and methylfolate.

Dark chocolate (daily portion)
Polyphenols + delivery system for sensitive nutrients.