--- product_id: 503491927 title: "Theanine XR Stress Relief - Stay Calm in The Face of Daytime Stress - Gluten-Free - Non-GMO - Vegetarian - 30 Vegetarian Tablets" brand: "life extension" price: "€ 78.20" currency: EUR in_stock: true reviews_count: 7 url: https://www.desertcart.hr/products/503491927-theanine-xr-stress-relief-stay-calm-in-the-face-daytime store_origin: HR region: Croatia --- # Extended-release tech for all-day calm Non-GMO, gluten-free & vegetarian clean formula 400mg pure L-Theanine for potent zen Theanine XR Stress Relief - Stay Calm in The Face of Daytime Stress - Gluten-Free - Non-GMO - Vegetarian - 30 Vegetarian Tablets **Brand:** life extension **Price:** € 78.20 **Availability:** ✅ In Stock ## Summary > 🧘‍♂️ Unlock your calm, conquer your day with Life Extension Theanine XR! ## Quick Answers - **What is this?** Theanine XR Stress Relief - Stay Calm in The Face of Daytime Stress - Gluten-Free - Non-GMO - Vegetarian - 30 Vegetarian Tablets by life extension - **How much does it cost?** € 78.20 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/503491927-theanine-xr-stress-relief-stay-calm-in-the-face-daytime) ## Best For - life extension enthusiasts ## Why This Product - Trusted life extension brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All-Day Zen Mode:** Advanced extended-release formula delivers steady stress relief from AM to PM. - • **Clean & Conscious:** Non-GMO, gluten-free, vegetarian tablets crafted with premium USA-sourced ingredients. - • **Compact Powerhouse:** 30 tablets of potent L-theanine in a sleek bottle—stress relief that fits your lifestyle. - • **Stay Calm, Stay Sharp:** Promotes wakeful relaxation without drowsiness—perfect for busy pros. - • **Scientifically Backed Calm:** Formulated with clinically studied doses to support healthy neurotransmitter balance. ## Overview Life Extension Theanine XR Stress Relief delivers a potent 400mg dose of L-theanine in an extended-release vegetarian tablet, promoting a balanced, wakeful state of calm throughout the day. This non-GMO, gluten-free formula supports healthy neurotransmitter activity to manage stress effectively without causing drowsiness, making it ideal for professionals seeking sustained mental clarity and relaxation. ## Description Product Description 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. Ingredients Calcium [from dicalcium phosphate] 50 mg Phosphorus [from dicalcium phosphate] 40 mg L-Theanine [as AlphaWave® Theanine XR™] 400 mg Other ingredients: microcrystalline cellulose, hydroxypropyl methylcellulose, hydroxypropyl cellulose, stearic acid, silica, vegetable stearate, croscarmellose sodium, glycerin. Directions Take one (1) tablet daily, or as recommended by a healthcare practitioner. Safety Warning KEEP OUT OF REACH OF CHILDREN DO NOT EXCEED RECOMMENDED DOSE Do not purchase if outer seal is broken or damaged. When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating. To report a serious adverse event or obtain product information, contact 1-866-280-2852. Review: Good brand - Great product and brand Review: Very strong and potent... too strong for me but at least it's the real deal!! - Why did you choose this product over others?: This is a high quality and strong dose of L-theanine. The dose is far too strong and potent for me but some people might find that to be a good thing. It is very sedating. If I use it I need to break it in half. It's so strong that I don't use it very often but it's good to have on hand just in case. ## Features - 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. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09HVDD48T | | Age Range Description | Adult | | Allergen Information | Contains: Gluten Free, Non-GMO | | Benefits | Promotes relaxation—without making you sleepy | | Best Sellers Rank | 88,817 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 988 in Stress & Anxiety Relief | | Brand | Life Extension | | Brand Name | Life Extension | | Colour | Off White | | Container Type | Bottle | | Customer Reviews | 4.6 out of 5 stars 390 Reviews | | Diet Type | Vegetarian | | Dosage Form | Tablets | | Flavour | Unflavoured | | Item Dimensions | 44 x 44 x 85 millimetres | | Item Form | Tablet | | Item Nype Name | Theanine XR Stress Relief | | Item Weight | 0.12 Pounds | | Item form | Tablet | | Item weight | 0.12 Pounds | | Manufacturer | Life Extension | | Manufacturer Part Number | 02429 | | Material Features | GMO Free | | Material Type Free | Gluten Free | | Model Name | Theanine XR™ Stress Relief | | Model Number | 02429 | | Number of Items | 1 | | Primary Supplement Type | Theanine | | Primary supplement type | Theanine | | Special Ingredients | Calcium [from dicalcium phosphate] | | Specific Uses For Product | Mood Support, Stress Management | | Supplement Formulation | Multi-Supplement | | Total Servings Per Container | 30.0 | | UPC | 737870242932 | | Unit Count | 30.0 count | | Unit count | 30.0 count | ## Product Details - **Brand:** Life Extension - **Diet type:** Vegetarian - **Flavour:** Unflavoured - **Item dimensions L x W x H:** 44 x 44 x 85 millimetres - **Item form:** Tablet - **Item weight:** 0.5 Grams - **Primary supplement type:** Theanine - **Product benefits:** Promotes relaxation—without making you sleepy - **Special ingredients:** Calcium [from dicalcium phosphate] - **Unit count:** 30.0 count ## Images ![Theanine XR Stress Relief - Stay Calm in The Face of Daytime Stress - Gluten-Free - Non-GMO - Vegetarian - 30 Vegetarian Tablets - Image 1](https://m.media-amazon.com/images/I/71XX1ZMZ88L.jpg) ## Questions & Answers **Q: What does taking L-theanine do?** A: Taking L-theanine, a relaxing amino acid found in green tea, can help promote a sense of calm and support a healthy stress response when life gets hectic. **Q: Is it OK to take L-theanine daily?** A: Taking L-theanine daily is generally recognized as safe, so it can be taken daily as needed. But you should always check the label on any supplement for proper usage instructions. **Q: When should I take L-theanine for stress?** A: L-theanine can be taken any time of the day, especially when it comes to stress. If you’re not sure if you should take L-theanine for stress, consult with your healthcare practitioner before supplementing. **Q: Is ashwagandha or L-theanine better for stress?** A: While both ashwagandha and L-theanine are great options for supporting a healthy stress response, one is not necessarily better than the other. In fact, you can even take them at the same time to complement their stress support benefits. **Q: Can you take magnesium and L-theanine together?** A: Much like L-theanine and ashwagandha, both magnesium and L-theanine are known for their calming and relaxing properties. Taking them together may have complementary effects to promote stress relief and overall well-being. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good brand *by C***O on 17 December 2023* Great product and brand ### ⭐⭐⭐ Very strong and potent... too strong for me but at least it's the real deal!! *by J***E on 22 June 2025* Why did you choose this product over others?: This is a high quality and strong dose of L-theanine. The dose is far too strong and potent for me but some people might find that to be a good thing. It is very sedating. If I use it I need to break it in half. It's so strong that I don't use it very often but it's good to have on hand just in case. ### ⭐⭐⭐⭐⭐ Can’t live without! Excellent for histamine sensitivity *by K***. on 13 July 2026* I only use life extension. I have autoimmune issues. Gut issues from it. Great for histamine resistance , gut and inflammation in the gut. Not about the energy . Excellent for acid reflux, gerd on histamine related food and wine. No side effects . Easy to swallow . ## Frequently Bought Together - Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - Life Extension Neuro-Mag Magnesium L-Threonate, Magnesium L-threonate, Memory Health, Quick Thinking, Cognitive Health Support, Vegetarian, Non-GMO, 90 Vegetarian Capsules - Life Extension Optimized Ashwagandha - Stress Management Supplement for a Healthy Stress Response, Focus, Memory, Stress Relief - Vegetarian, Gluten-Free, Non-GMO, 60 Capsules --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/503491927-theanine-xr-stress-relief-stay-calm-in-the-face-daytime](https://www.desertcart.hr/products/503491927-theanine-xr-stress-relief-stay-calm-in-the-face-daytime) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-08-30*