






Price: $19.89
(as of Dec 22, 2025 07:05:31 UTC – Details)
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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
ASIN : B0C9N1Q5QS
Best Sellers Rank: #7,483 in Health & Household (See Top 100 in Health & Household) #72 in Herbal & Nutritional Sleep Supplements
Customer Reviews: 4.6 4.6 out of 5 stars (1,391) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
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!
Customers say
Customers find the L-Theanine supplement helps them fall asleep, relax, and stay calm, with one customer noting it works well as a natural stress reliever. The product receives positive feedback for its quality, effectiveness as a sleeping aid, good value, and extra strength. While some customers report no side effects, others experience headaches, and there are mixed opinions about the significant dosage differences per capsule.







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