--- product_id: 1864778 title: "Suntheanine L-Theanine - 90 Vegetarian Capsules" brand: "doctor's best" price: "€ 49.64" currency: EUR in_stock: true category: "Doctor's Best" url: https://www.desertcart.hr/products/1864778-suntheanine-l-theanine-90-vegetarian-capsules store_origin: HR region: Croatia --- # 100% vegetarian, vegan-friendly capsules 150 mg pure Suntheanine per capsule Supports focus & mental clarity Suntheanine L-Theanine - 90 Vegetarian Capsules **Brand:** doctor's best **Price:** € 49.64 **Availability:** ✅ In Stock ## Summary > 🧘‍♂️ Elevate your calm, sharpen your edge — stress less, achieve more! ## Quick Answers - **What is this?** Suntheanine L-Theanine - 90 Vegetarian Capsules by doctor's best - **How much does it cost?** € 49.64 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/1864778-suntheanine-l-theanine-90-vegetarian-capsules) ## Best For - doctor's best enthusiasts ## Why This Product - Trusted doctor's best brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Clean & Conscious:** Non-GMO, gluten-free, soy-free, and vegan to fit your lifestyle - • **Easy Daily Ritual:** Convenient veggie capsules designed for effortless intake - • **Pure Suntheanine Power:** 150 mg of clinically studied L-theanine for calm focus - • **Stress-Free Productivity:** Promotes relaxation without drowsiness—stay sharp all day - • **Trusted Science-Backed Quality:** 35+ years of rigorous testing from Doctor’s Best ## Overview Doctor's Best Suntheanine L-Theanine delivers 150 mg of pure, clinically researched L-theanine per vegetarian capsule, designed to promote relaxation and mental clarity without drowsiness. This non-GMO, gluten-free, and vegan-friendly supplement supports stress management and cognitive focus, making it an ideal daily ally for busy professionals seeking balanced productivity backed by over 35 years of scientific expertise. ## Description At Doctor’s Best, we understand that stress can be an unwelcome guest. That is why our specialized formula features a pure form of L-theanine that is renowned for promoting relaxation, managing stress, and sharpening focus for a more balanced state of mind.* ## Features - L-THEANINE SUPPLEMENT: Each capsule provides 150 mg of Suntheanine, a pure form of L-theanine (the amino acid found in green tea). It is known for its supportive role in relaxation & mental clarity - TENSION & STRESS SUPPORT: L-theanine helps encourage a relaxed state without drowsiness, supporting a sense of calm during everyday stress while still allowing for alertness and focus - PROMOTES FOCUS: This supplement supports cognitive performance by promoting attention and mental sharpness, beneficial for work, study, or other focus-driven activities - 150 MG VEGGIE CAPS: Doctor's Best L-Theanine comes in convenient, easy-to-swallow veggie capsules. This formula is Non-GMO, gluten free, soy free, and vegan-friendly, fitting a variety of lifestyles - DOCTOR'S BEST: Good nutrition starts with sound science. For over 35 years, we have been dedicated to providing only thoroughly researched, rigorously tested, and clinically-approved supplements ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001OXTGVG | | Age Range Description | Adult | | Allergen Information | Gluten Free | | Best Sellers Rank | #12,038 in Health & Household ( See Top 100 in Health & Household ) #6 in 5-HTP Nutritional Supplements #1,147 in Sales & Deals | | Brand | Doctor's BEST | | Brand Name | Doctor's BEST | | Color | No Color | | Container Type | Bottle | | Customer Reviews | 4.6 out of 5 stars 2,502 Reviews | | Diet Type | Gluten Free | | Dosage Form | 150 | | Flavor | Unflavored | | Item Dimensions | 2.13 x 2.13 x 3.69 inches | | Item Form | Capsule | | Item Nype Name | L-Theanine | | Item Weight | 0.06 kg | | Manufacturer | Doctor's Best | | Manufacturer Part Number | DRB-00197 | | Material Features | Vegetarian | | Model Name | r's Best L-Theanine Contains Suntheanine, Helps Reduce Stress & Sleep, Non-GMO, Gluten Free, Vegan, 150 mg (DRB-00197), 90 Count | | Model Number | DRB-00197 | | Number of Items | 1 | | Primary Supplement Type | multivitamin | | Product Benefits | Relaxation | | Specific Uses For Product | L-Theanine (Suntheanine®) 150 mg | | Total Servings Per Container | 90 | | UPC | 753950001978 | | Unit Count | 90 Count | ## Product Details - **Age Range (Description):** Adult - **Brand:** Doctor's BEST - **Diet Type:** Gluten Free - **Flavor:** Unflavored - **Item Form:** Capsule - **Item Weight:** 0.06 kg - **Item dimensions L x W x H:** 2.13 x 2.13 x 3.69 inches - **Primary Supplement Type:** multivitamin - **Product Benefits:** Relaxation - **Unit Count:** 90 Count ## Images ![Suntheanine L-Theanine - 90 Vegetarian Capsules - Image 1](https://m.media-amazon.com/images/I/719zn9vom2L.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: What is curcumin?** A: Curcumin is a natural compound found in turmeric root known for its antioxidant properties and nutritional support for joint and overall wellness.* **Q: What are the benefits of curcumin?** A: Curcumin supports joint comfort, mobility, and antioxidant activity that helps protect cells from oxidative stress.* **Q: Why better absorption?** A: This formula includes BioPerine black pepper extract standardized to 95% piperine, which helps enhance curcumin absorption and bioavailability.* **Q: Is this derived from turmeric root?** A: Yes. The curcumin in this formula is derived from turmeric root and standardized as Curcumin C3 Complex.* **Q: What's the daily dosage?** A: Adults typically take 2 capsules daily with food, or as recommended by a nutritionally informed physician.* ## Frequently Bought Together - Doctor's Best L-Theanine Contains Suntheanine, Helps Reduce Stress & Sleep, Non-GMO, Gluten Free, Vegan, 150 mg (DRB-00197), 90 Count - Doctors BEST High Absorption Magnesium Lysinate Glycinate 100% Chelated, Muscle Relaxation & Sleep Support, Non-GMO, Gluten Free, Soy Free, Vegan, 100% Chelated 240 Tablets - Nordic Naturals Ultimate Omega, Lemon Flavor - 90 Soft Gels - 1280 mg Omega-3 - High-Potency Omega-3 Fish Oil Supplement with EPA & DHA - Promotes Brain & Heart Health - Non-GMO - 45 Servings --- ## 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/1864778-suntheanine-l-theanine-90-vegetarian-capsules](https://www.desertcart.hr/products/1864778-suntheanine-l-theanine-90-vegetarian-capsules) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-09-11*