
KSM-66 Ashwagandha
The most clinically studied ashwagandha extract, at the full 600mg dose the trials actually use.

£50.00
Calm, focused attention, and the amino acid that takes the jitter out of caffeine.
Secure checkoutFree delivery over £5030-day returns
MomentousL-Theanine · 60 CapsulesWhat are you hoping to improve?
Pick a goal and we’ll tell you, honestly, whether L-Theanine is the right fit, or what would suit you better.
L-theanine is the amino acid in green tea behind that distinctive calm-alert state, settled but switched on. It nudges the brain toward steadier alpha-wave activity, the signature of relaxed concentration, with none of the sedation or fog of a sleep aid. Its best-known trick is partnering with caffeine. Taken together they keep the lift and the focus while smoothing out the racing pulse, the jitter and the afternoon crash. It is the simplest upgrade you can make to your morning coffee.

The most clinically studied ashwagandha extract, at the full 600mg dose the trials actually use.

Glandular support for the system that carries you through demanding, depleting stretches, made to clinical standard.

An adaptogen for mental stamina, the one to reach for when fatigue, not anxiety, is the problem.
Interested in more
personalised recommendations?
Set up your
Profile to connect your wearables, biomarkers and test results. Create a bespoke plan based on your unique biology. Expert-led, evidence-based.
L-theanine is the amino acid in green tea behind that distinctive calm-alert state, settled but switched on. It nudges the brain toward steadier alpha-wave activity, the signature of relaxed concentration, with none of the sedation or fog of a sleep aid.
Its best-known trick is partnering with caffeine. Taken together they keep the lift and the focus while smoothing out the racing pulse, the jitter and the afternoon crash. It is the simplest upgrade you can make to your morning coffee.
Momentous deliver a clean 200mg, the amount the focus research uses, with the same Informed Sport and NSF testing that runs through their range, so it is trusted at the highest level of sport.
A daytime focus tool that works on its own or stacked with caffeine, and a gentle companion to ashwagandha for all-day calm.
L-theanine is the amino acid in green tea behind that distinctive calm-alert state, settled but switched on. It nudges the brain toward steadier alpha-wave activity, the signature of relaxed concentration, with none of the sedation or fog of a sleep aid.
Momentous deliver a clean 200mg, the dose the focus research uses, with Informed Sport and NSF testing. It's the simplest, best-evidenced upgrade you can make to your morning coffee.
Encourages relaxed, alert concentration and smooths caffeine's edge, so you keep the focus without the racing pulse or afternoon crash.

One capsule for calm focus, alone or with your coffee.
Pair 200mg with ~100mg caffeine for the classic focus stack.
Non-drowsy, use any time you want steadier attention.
If you feel wired or restless, take less, or take a break.
The aim is steadiness, not stimulation.
A short workshop on attention, caffeine and the simple stacks that help you concentrate calmly through a demanding day.
See our next focus talk
Overall Sentiment
4 months ago
Been stacking this with my morning coffee for about six weeks now. The difference is noticeable — I get the focus without that slightly wired, irritable feeling I used to get by 10am. Didn't expect much but it's quietly become a staple.
4 months ago
I'm in a heavy marathon block and my brain just wouldn't switch off in the evenings. Started taking this about an hour before bed and it genuinely helps me get there faster. Not sedated, just... quieter mentally. Solid product.
5 months ago
5 months ago
It works well — I take it with my morning coffee and feel much less anxious through the workday. Only gripe is that the capsules are noticeably large and I sometimes struggle to swallow them. Wish they offered a smaller capsule or powder option.
5 months ago
Bought this after a friend who's a GP mentioned it. Sceptical at first but I've genuinely noticed I'm calmer during back-to-back client meetings. Not drowsy, just less reactive. Good stuff.
5 months ago
I work long shifts and was finding caffeine was making my anxiety worse. Pairing this with a smaller coffee dose has been a good move. The alertness is there but the jitteriness isn't. Will reorder.
A blood test is the only way to know what your body actually needs. We’ll tell you which of these supplements is right for you.
Find your panel
A curated selection of products, tools and rituals, carefully chosen by our expert doctors, to benefit you on your wellness journey.
Loading the catalogue…