1 / 5
L-theanine is the amino acid in green tea behind that distinctive calm-alert state, settled but switched on.
£50
L-theanine is the amino acid in green tea behind that distinctive calm-alert state, settled but switched on.
L-theanine is the amino acid in green tea behind that distinctive calm-alert state, settled but switched on.
If you feel wired or restless, take less, or take a break.
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.
Standard UK delivery included on every order, 1 to 3 working days after dispatch.
Next working day for £25 when you order by 12pm. Orders placed before 12pm on a working day leave the same day. Later orders leave the next working day.
You can return unopened and unused items within 30 days of delivery. This does not affect your statutory rights. Read the delivery and returns terms
Which area are you looking at?
Choose an area to see whether L-Theanine is suited to it.
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.
Your Profile
Your first order creates it. Add your blood results or a wearable, and a doctor can recommend what suits you.
Sign inMomentous 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.
A great fit if you want calmer, steadier focus, or if coffee leaves you jittery. Non-drowsy and gentle, it suits almost anyone; pair it with caffeine for the classic focus stack.
Standard UK delivery included on every order, 1 to 3 working days after dispatch. Next working day for £25 when you order by 12pm.
You can return unopened and unused items within 30 days of delivery. This does not affect your statutory rights. You can cancel an order for any reason within 14 days of delivery, under the Consumer Contracts Regulations. Health products that arrive sealed cannot be returned once opened, for hygiene reasons. If an item is faulty, the Consumer Rights Act gives you a repair, a replacement or a refund.
Yes. Choose Subscribe and it arrives every month. You can skip a month, pause or cancel at any time from your Profile, and cancelling stops the next payment.
Overall
6 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.
6 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.
6 months ago
6 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.
7 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.
7 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.
GP appointment, £150Marylebone and BelgraviaA GP looks for the cause, and treats it.At our clinic in Marylebone, London, doctors also offer private blood tests and executive health assessments.
A curated selection of products, tools and rituals, chosen by our doctors.
