Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets

Price: $28.00 - $8.92
(as of Aug 25, 2025 13:29:09 UTC – Details)


L-theanine, an amino acid found in green tea, can support relaxation. This compound supports a healthy response to stress to maintain a sense of zen and stay calm and collected all day long. L-theanine does this by supporting the activity of glutamate, an excitatory neurotransmitter, while also promoting healthy levels of GABA, a calming neurotransmitter. When these neurotransmitters work together, they can help support relaxation. Since the body metabolizes L-theanine quickly, this formula includes extended-release technology for benefits both immediately and over time. Vegetarian, non-GMO, gluten-free and manufactured in the USA.
Product Dimensions ‏ : ‎ 1.75 x 1.75 x 3.33 inches; 1.76 ounces
Item model number ‏ : ‎ 02429
Date First Available ‏ : ‎ October 13, 2021
Manufacturer ‏ : ‎ Life Extension
ASIN ‏ : ‎ B09HVDD48T
Best Sellers Rank: #15,672 in Health & Household (See Top 100 in Health & Household) #404 in Blended Vitamin & Mineral Supplements
Customer Reviews: 4.5 4.5 out of 5 stars 257 ratings 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); } }); });
Promotes a sense of calm – L-theanine helps support a healthy stress response and the production of calming neurotransmitters to better achieve a state of zen when life gets hectic.
Encourages wakeful relaxation – Calming the mind doesn’t have to come with sleepiness. L-theanine supports healthy brain wave activity, promoting a wakeful state similar to meditation.
Extended release for all-day support – The body metabolizes L-theanine quickly. This L-theanine supplement provides immediate and extended release for a long-lasting state of calm throughout the day.
Ingredients matter – We use only the finest raw ingredients with the purity and potency you deserve. The majority of our products are non-GMO, gluten-free and manufactured in the USA—and a Certificate of Analysis is available for every one.       
Live your healthiest life – We believe the answers to a healthier life are within reach, and that scientific research is the key to getting us there. That’s why so many of our formulas feature specific ingredients and amounts based on scientific studies.