Momentous L-Theanine.
200 mg of L-theanine, the calming amino acid in tea, in one vegan capsule. Take it by day for calm focus or at night for sleep. NSF Certified for Sport.
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Price checked on livemomentous.com on November 5, 2026 (one-time purchase; Momentous showed a subscribe-and-save price of $29.99). Prices and stock change, so check before you buy.
Watch
Momentous L-Theanine in 60 seconds.
Why it made the stack
Key takeaways.
Calm focus in the day, or 30 to 60 minutes before bed for sleep.
L-theanine is often paired with caffeine to take the edge off the jitters.
One ingredient, one capsule, 60 days a bottle.
From the label
One capsule, every number.
Here's what one serving gives you, straight from the label.
From the Momentous product page and supplement facts, checked November 5, 2026. Always read the label on the product you buy.
Momentous directions: take 1 capsule daily; any time for calm focus, or 30 to 60 minutes before bed for sleep.
What the research says
What the evidence shows.
L-theanine, stress and sleep
In a 4-week trial of 30 healthy adults, 200 mg a day improved stress, sleep and some thinking scores versus placebo.
Hidese S et al. Nutrients 2019;11:2362. doi:10.3390/nu11102362
What Momentous says
The benefit wording on the L-Theanine product page is Momentous's own. The independent part is the third-party certification, which screens for banned substances and checks the label.
Momentous. L-Theanine product page and supplement facts. livemomentous.com, checked November 5, 2026.
Before you buy
What you should know.
- Already in Nightly Sleep. If you take Nightly Sleep, you already get 200 mg.
- Also in Pre-Workout. Drop 11 has 300 mg per serving.
- Check with your doctor first if you take blood pressure medicine or sedatives, or are pregnant.
Great fit if you…
- Drink coffee and get jittery
- Want calm without feeling sleepy
- Want a gentle sleep add-on
How to take it
- 1 capsule a day
- Mornings with coffee, or 30 to 60 minutes before bed
- Try it for 2 weeks
FAQ
Quick answers.
What does L-theanine do?
It's an amino acid from tea that can promote calm without drowsiness. Small trials show better stress and sleep scores.
Can I take it with coffee?
Yes. Many people pair it with caffeine to smooth out the jitters.
When should I take it?
Any time for calm focus, or 30 to 60 minutes before bed for sleep.
Sources
- Hidese S et al. Effects of L-theanine administration on stress-related symptoms and cognitive functions in healthy adults: a randomized controlled trial. Nutrients 2019;11:2362. doi:10.3390/nu11102362
- Momentous. L-Theanine product page and supplement facts. livemomentous.com, checked November 5, 2026.
- NSF. Certified for Sport program. nsfsport.com.
This page is for general information and is not medical advice. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.