--- product_id: 17590198 title: "SFI Health Klaire Labs L-Theanine - 100mg Suntheanine to Promote Promote Relaxation (60 Capsules)" brand: "sfi health" price: "$65.91" currency: USD in_stock: true reviews_count: 8 category: "Sfi Health" url: https://www.desertcart.us/products/17590198-sfi-health-klaire-labs-l-theanine-100mg-suntheanine-to-promote store_origin: US region: United States of America --- # Supports serotonin, dopamine & norepinephrine Hypoallergenic & allergen-free formula 100mg Suntheanine pure L-Theanine SFI Health Klaire Labs L-Theanine - 100mg Suntheanine to Promote Promote Relaxation (60 Capsules) **Brand:** sfi health **Price:** $65.91 **Availability:** ✅ In Stock ## Summary > 🌿 Elevate your calm—relax smarter, not harder. ## Quick Answers - **What is this?** SFI Health Klaire Labs L-Theanine - 100mg Suntheanine to Promote Promote Relaxation (60 Capsules) by sfi health - **How much does it cost?** $65.91 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/17590198-sfi-health-klaire-labs-l-theanine-100mg-suntheanine-to-promote) ## Best For - sfi health enthusiasts ## Why This Product - Trusted sfi health brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Pure Suntheanine Power:** Patented manufacturing ensures premium, clinically studied L-theanine for consistent quality. - • **Calm Without Compromise:** Promotes deep relaxation without drowsiness, perfect for busy professionals seeking balance. - • **Neurotransmitter Harmony:** Supports key brain chemicals—serotonin, dopamine, and norepinephrine—for mood and focus. - • **Trusted Legacy Since 1969:** Developed with healthcare practitioners, ensuring reliability and efficacy you can count on. - • **Clean & Sensitive Friendly:** Free from common allergens and artificial additives, ideal for sensitive, health-conscious users. ## Overview SFI Health Klaire Labs L-Theanine delivers 100mg of pure Suntheanine per capsule, a patented form of L-theanine known for promoting relaxation without causing drowsiness. This hypoallergenic supplement supports neurotransmitter balance, including serotonin, dopamine, and norepinephrine, enhancing mood and mental clarity. Free from common allergens and artificial ingredients, it’s trusted by healthcare professionals since 1969 and designed for adults seeking clean, effective relaxation support. ## Description L-theanine, a unique amino acid compound found in green tea, is noted for its calming benefits.* Suntheanine brand pure L-theanine is produced through a patented manufacturing process. Studies with Suntheanine show it can promote relaxation without drowsiness.* Three Brands Become One: Since 1969, Klaire Labs has been dedicated to developing clean, efficacious nutritional supplements to ensure optimal outcomes for even the most sensitive individuals. This enduring commitment to quality is at the root of the unification with sister brands ProThera and Complementary Prescriptions. These three brands have unified with a modernized look based on the legacy Klaire Labs logo. Review: Helps my anxiety a lot - Really great quality. I find it working better than the last bend I used. I take one at night and one again in the morning. Along with my other meditations it helps my anxiety a lot! Review: Helps me - Really helps to feel calm and sleep well when I need to. ## Features - Promote Relaxation - L-theanine is a unique amino acid compound found in green tea, and is noted for its calming benefits.* - Suntheanine Pure L-Theanine - Suntheanine brand pure L-theanine is produced through a patented manufacturing process. Studies with Suntheanine show it may promote relaxation without drowsiness.* - Neurotransmitter Support - L-theanine has been studied for its ability to reduce glutamate uptake and support the body's serotonin, dopamine, and norepinephrine excretion.* - Hypoallergenic* - Keeping sensitives in mind, this product is free of the following common allergens: milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten, soybeans, and yeast. Contains no artificial colors, flavors, or preservatives. - Practitioner Trusted - Trusted by healthcare practitioners since 1969, Klaire Labs products are developed closely with physicians and are intended to be used as directed by a healthcare practitioner. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00JUZZZ10 | | Age Range Description | Adult | | Best Sellers Rank | #84,481 in Health & Household ( See Top 100 in Health & Household ) #3,509 in Blended Vitamin & Mineral Supplements | | Brand | SFI Health | | Brand Name | SFI Health | | Container Type | Bottle | | Customer Reviews | 4.7 out of 5 stars 101 Reviews | | Dosage Form | Capsule | | Flavor | Unflavored | | Item Dimensions | 3 x 3 x 3 inches | | Item Form | Capsule | | Item Weight | 0.05 Pounds | | Item dimensions L x W x H | 3 x 3 x 3 inches | | Manufacturer | SFI Health | | Manufacturer Part Number | LTH | | Material Features | Vegetarian | | Number of Items | 1 | | Product Benefits | Hypoallergenic,Relaxation | | UPC | 828054011465 | | Unit Count | 60 Count | ## Product Details - **Age Range (Description):** Adult - **Brand:** SFI Health - **Flavor:** Unflavored - **Item Form:** Capsule - **Item Weight:** 0.05 Pounds - **Item dimensions L x W x H:** 3 x 3 x 3 inches - **Number of Items:** 1 - **Package Information:** Bottle - **Product Benefits:** Hypoallergenic,Relaxation - **Unit Count:** 60 Count ## Images ![SFI Health Klaire Labs L-Theanine - 100mg Suntheanine to Promote Promote Relaxation (60 Capsules) - Image 1](https://m.media-amazon.com/images/I/61dofa66V9L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Helps my anxiety a lot *by R***S on August 31, 2025* Really great quality. I find it working better than the last bend I used. I take one at night and one again in the morning. Along with my other meditations it helps my anxiety a lot! ### ⭐⭐⭐⭐⭐ Helps me *by N***M on May 24, 2026* Really helps to feel calm and sleep well when I need to. ### ⭐⭐⭐⭐⭐ Subtle relaxation *by S***N on March 1, 2025* A supplement for relaxation is hard to find. I have used this one in other brands and can't say if I noticed much change in my mood. I now take this brand at night time to help settle down. I can say while the effect is subtle, it does reduce anxiousness and I have been able to sleep through the nights better. I think it is a bit pricey over other brands, but this one actually works. Reordering. ## Frequently Bought Together - Klaire Labs L-Theanine - 100mg Suntheanine to Promote Promote Relaxation (60 Capsules) - Klaire Labs Magnesium Glycinate Complex - Chelated Magnesium Blend for Optimal Absorption - Supports Healthy Bones, Muscles & Energy Levels - Gentle on Digestion (100 Capsules) - Klaire Labs GABA - 420 Milligrams Gamma-Aminobutyric Acid, Neurotransmitter to Support Calm & Mood (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.us/products/17590198-sfi-health-klaire-labs-l-theanine-100mg-suntheanine-to-promote](https://www.desertcart.us/products/17590198-sfi-health-klaire-labs-l-theanine-100mg-suntheanine-to-promote) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-24*