--- product_id: 298817173 title: "Theanine Serene, 120 Tablets" brand: "source naturals" price: "327 zł" currency: PLN in_stock: true reviews_count: 5 url: https://www.desertcart.pl/products/298817173-theanine-serene-120-tablets store_origin: PL region: Poland --- # Natural L-Theanine formula 120 tablets per pack Fast-acting in 15 mins Theanine Serene, 120 Tablets **Brand:** source naturals **Price:** 327 zł **Availability:** ✅ In Stock ## Summary > 🌿 Unlock calm focus and deep rest—because your mind deserves the best. ## Quick Answers - **What is this?** Theanine Serene, 120 Tablets by source naturals - **How much does it cost?** 327 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/298817173-theanine-serene-120-tablets) ## Best For - source naturals enthusiasts ## Why This Product - Trusted source naturals brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rapid Calm & Focus:** Experience tranquility within 15 minutes—perfect for busy minds needing quick reset. - • **Non-Groggy Mornings:** Wake refreshed and alert—no sluggish aftereffects, just pure calm. - • **Trusted by Families:** Clinically favored by users managing ADHD and stress, making it a wellness staple. - • **Clean, Natural Support:** Harness the power of pure L-Theanine to soothe your mind and body naturally. - • **Generous 120-Tablet Supply:** Stay stocked for months of stress relief and restful nights without interruption. ## Overview Source Naturals Theanine Serene delivers a potent 120-tablet supply of natural L-Theanine, clinically shown to promote relaxation, improve sleep quality, and enhance focus without causing grogginess. Fast-acting within 15 minutes, it’s a trusted supplement for managing stress and supporting mental clarity, favored by individuals and families alike. ## Description Source Naturals Theanine Serene, 120 Tablets Review: Works within 15 minutes if taken at bedtime, it helps with sleeping. I take it as needed not daily. great for focusing and calm the body down completely , love this supplement Review: My kids (19&17) use this to help them sleep. My son has autism and adhd and this helps get a full nights rest. He doesn’t wake up groggy the next morning either. My daughter has ADHD and also uses it when she is stressed and having a hard time sleeping. No side effects. If you have problems going to sleep it helps a lot! ## Features - Calms mind and body - Supports body health - Pack of 120 Tablets - FSSAI Importer Licence no: 10018022008525 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000GFJJG0 | | ASIN | B000GFJJG0 | | Best Sellers Rank | #392,775 in Health & Personal Care ( See Top 100 in Health & Personal Care ) #2,478 in Combination Multivitamins & Minerals | | Customer Reviews | 4.6 4.6 out of 5 stars (1,004) | | Date First Available | 3 August 2012 | | Is Discontinued By Manufacturer | No | | Item Dimensions LxWxH | 33 x 33 x 41 Millimeters | | Item Dimensions LxWxH | 33 x 33 x 41 Millimeters | | Item Weight | 45.4 g | | Item Weight | 45.4 g | | Item model number | SN1776 | | Item model number | SN1776 | | Manufacturer | Source Naturals | | Manufacturer | Source Naturals | | Net Quantity | 120.00 Count | | Net Quantity | 120.00 Count | | Product Dimensions | 3.3 x 3.3 x 4.06 cm; 45.36 g | | Product Dimensions | 3.3 x 3.3 x 4.06 cm; 45.36 g | ## Product Details - **Age Range (Description):** Adult - **Brand:** Source Naturals - **Dosage Form:** Tablet - **Item Form:** Tablet - **Item Weight:** 45 g - **Item dimensions L x W x H:** 33 x 33 x 41 Millimeters - **Net Quantity:** 120.00 Count - **Number of Items:** 1 - **Package Information:** Packet - **Servings per Container:** 60 ## Images ![Theanine Serene, 120 Tablets - Image 1](https://m.media-amazon.com/images/I/318OB7thUmL.jpg) ![Theanine Serene, 120 Tablets - Image 2](https://m.media-amazon.com/images/I/31oBOs61EXL.jpg) ![Theanine Serene, 120 Tablets - Image 3](https://m.media-amazon.com/images/I/41VpxG4GL1L.jpg) ![Theanine Serene, 120 Tablets - Image 4](https://m.media-amazon.com/images/I/41pi-HFVIwL.jpg) ![Theanine Serene, 120 Tablets - Image 5](https://m.media-amazon.com/images/I/51EEqq9ttUL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by M***Y on 21 January 2026* Works within 15 minutes if taken at bedtime, it helps with sleeping. I take it as needed not daily. great for focusing and calm the body down completely , love this supplement ### ⭐⭐⭐⭐⭐ Review *by O***? on 7 November 2025* My kids (19&17) use this to help them sleep. My son has autism and adhd and this helps get a full nights rest. He doesn’t wake up groggy the next morning either. My daughter has ADHD and also uses it when she is stressed and having a hard time sleeping. No side effects. If you have problems going to sleep it helps a lot! ### ⭐⭐⭐⭐⭐ Review *by M***O on 26 June 2013* So my Theanine Serene arrived in the mail today.. WOW. I’m impressed. I’ve been using suntheanine by Solgar for awhile now as part of my caffeine + L-Theanine nootropic stack for steady focus and concentration. For those uninitiated, L-theanine is a nonessential amino acid found almost exclusively in the camellia sinensis plant (green tea). It helps to counteract the negative effects of caffeine by calming the excitatory neurotransmitters in the brain that cause anxiety. So, I found the Solgar brand to be very subtle and it took a few days to really kick in, and even when it did the effect was negligible unless I took up to 300mg twice a day and that was on top of also taking Alpha BRAIN which contains 200mg of theanine as well. I can say after about a half hour of taking Theanine Serene I was so super chilled out. I went to work a couple hours later and nothing seemed to phase me, which is a big deal considering what a high stress environment it is. To me; that’s all the proof I need. I’ve researched everything in it: magnesium, GABA, taurine, theanine, and Holy Basil leaf. That’s why I decided to go with this particular brand; because it combines so many elements which act upon GABA brain receptors towards the same effect. So it’s a multi-pronged attack. I imagine that’s why it’s so effective. OF COURSE something to remember is that 1.) These are supplements that you may or may not already be partially procuring through diet already and so therefore may have some degree of tolerance if you experiment with them. And 2.) Individual physiology differs from person to person (weight, metabolism, age, etc.) dictates how you’ll react. If anyone reads this and decides to give it a chance, give it a week at least or more based on the aforementioned variables to allow the components to pass the blood/brain barrier and saturate your receptors. ## Frequently Bought Together - Source Naturals Serene Science L-Theanine with Magnesium and GABA - 120 Tablets - Source Naturals Serene Science GABA, for a Calm Mind, 750mg - 180 Capsules - Source Naturals Theanine Serene with Relora, Calm Mind and Body* - 120 Tablets --- ## 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.pl/products/298817173-theanine-serene-120-tablets](https://www.desertcart.pl/products/298817173-theanine-serene-120-tablets) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-23*