★★★★★
Useful supplement with a good price
Tiffany Ospina—December 26, 2025
I like this supplement for helping me remain calm. It has health benefits and the quality is good. The price is also reasonable. Read more
NUTRAHARMONY
L Theanine 400 mg L-Theanine Stress Relief Extra Strength Supplement Made in USA Relaxation Sleep Calm Support For
$19.89
About this item
- L Theanine Supplement — Don’t stress & do your best! Sleep well with l theanine 400mg! Provides calming & relaxing effect on the body, supports good sleep, and the ability to deal with stress.
- Calm, Sleep & Relax — L theanine works by encouraging brain-wave activity, which improves concentration by reducing distractions and promoting a more focused state of mind
- 100% Natural Source — L Theanine effectively relaxes and relieves mental and physical tension. It has a natural ability to deal with nervousness and stress-related sleep problems. Found and made from the purest, highest quality green tea!
- Made in the USA — L theanine from NUTRAHARMONY does not contain GMOs; it's dairy-free, gluten-free, nut-free, wheat-free, soy-free, nightshade-free, and sugar-free. L-theanine is a perfect addition to your gluten-free & vegan lifestyle with advanced support and significant effects
- Quality Matters — NUTRAHARMONY ltheanine vitamin is an excellent and effortless choice for improving your health. If you want to share your experience or have questions about l- theanine, message us. Our support team works 24/7. Maintain your health anytime, anywhere with a ltheanine supplement!
$19.89
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Product details
| Brand | NUTRAHARMONY |
|---|---|
| Flavor | Unflavored |
| Primary Supplement Type | L-Theanine |
| Unit Count | 120.00 Count |
| Item Form | Capsule |
| Item Weight | 400 Milligrams |
| Special Ingredients | L-Theanine |
| Diet Type | Vegan |
| Product Benefits | Sleep Support |
| Age Range (Description) | Adult |
Technical specifications
| package_dimensions | 4.41 x 2.28 x 2.24 inches; 0.01 ounces |
|---|---|
| item_model_number | 5 |
| date_first_available | June 28, 2023 |
| manufacturer | Distributed by Nutra Harmony LLC |
| best_sellers_rank | #6,226 in Health & Household ( See Top 100 in Health & Household ) #80 in Herbal & Nutritional Sleep Supplements |
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Customer reviews
4.61,482 ratings
Customers say
Customers find the L-Theanine supplement effective for stress and sleep issues, helping them fall asleep and stay calm.
★★★★★
Calming and Effective Without Making You Sleepy
Katteryn—November 15, 2025
The L-Theanine 400 mg worked really well for stress and tension. I felt calmer and more focused within about 30–40 minutes, but not drowsy at all. It’s great for staying relaxed during work or before bed. The capsules are easy to swallow and don’t upset the stomach. A solid extra-strength option if you want gentle, natural stress relief. Read more
★★★★★
It actually works ✅
Candice Johnson—December 24, 2025
I have ADHD and it's very hard for me to settle my mind down to go to sleep. Also, I have sleep apnea.. When I say I take it an hour before bed and don't wake up. What a blessing 🙏🏽 Before taking this. I use to toss and turn all night. Also. I would wake up easily to any sound. All of that went out of the window taking this. I take two one hour before bed .. and sleep 8 hours.. I have bought this 6 times and I am going to keep refilling my order Read more
★★★★☆
Good stuff
Ibrm jim—November 15, 2025
A good use of your money would be to buy this thing. Quality focus and jiterriness is nothing i saw also not sticky . Very effective . Health benefits im not sure. Read more
★★★★★
Good purchase
Jacqueline Levy—December 18, 2025
Excellent quality ordering again. Finally sleeping! Read more
★★★★★
My energy seems better, along with my focus
Joann Stark—December 27, 2025
One of the best things you can do for your health is good sleep. I actually seem to be sleeping better since starting these supplements. I like the ingredients. My energy seems better, along with my focus. Read more
★★★★★
Entrega oportuna
Leandro Galván Villegas—January 1, 2026
Excelente producto Read more
★★★★★
2 a day helps you focus away
David—November 24, 2025
Works as expected Read more
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