--- product_id: 428704243 title: "Pure Encapsulations L-Tryptophan | Amino Acid Supplement for Relaxation, Serotonin Support, PMS, and Sleep* | 180 Capsules" brand: "pure encapsulations" price: "$491.12" currency: USD in_stock: true reviews_count: 2 category: "Pure Encapsulations" url: https://www.desertcart.us/products/428704243-pure-encapsulations-l-tryptophan-amino-acid-supplement-for-relaxation-serotonin store_origin: US region: United States of America --- # Supports sleep onset & duration Free from allergens & artificial additives 180 pure capsules Pure Encapsulations L-Tryptophan | Amino Acid Supplement for Relaxation, Serotonin Support, PMS, and Sleep* | 180 Capsules **Brand:** pure encapsulations **Price:** $491.12 **Availability:** ✅ In Stock ## Summary > 🌙 Elevate your evenings with pure, potent calm — sleep smarter, live brighter! ## Quick Answers - **What is this?** Pure Encapsulations L-Tryptophan | Amino Acid Supplement for Relaxation, Serotonin Support, PMS, and Sleep* | 180 Capsules by pure encapsulations - **How much does it cost?** $491.12 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/428704243-pure-encapsulations-l-tryptophan-amino-acid-supplement-for-relaxation-serotonin) ## Best For - pure encapsulations enthusiasts ## Why This Product - Trusted pure encapsulations brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Clean & Pure Formula:** Crafted without gluten, GMOs, artificial colors, or fillers—because what’s left out matters. - • **Mood & Craving Control:** L-Tryptophan’s serotonin boost helps ease occasional PMS irritability and curb cravings naturally. - • **Natural Relaxation Support:** Promotes calm and relaxation, making it your go-to for unwinding after a high-pressure day. - • **Premium Sourcing & Testing:** Only top-tier ingredients, rigorously tested for potency and purity to fuel your wellness journey. - • **Restful Nights, Energized Days:** Clinically supported to enhance sleep quality, onset, and duration for your busiest mornings. ## Overview Pure Encapsulations L-Tryptophan delivers 180 capsules of a premium, allergen-free amino acid supplement designed to support restful sleep, relaxation, and serotonin production. Backed by clinical research, it helps improve sleep onset and duration, eases occasional PMS symptoms, and controls cravings, all while maintaining a clean, pure formula free from gluten, GMOs, and artificial additives. ## Description The essential amino acid l-tryptophan is a serotonin precursor. Research indicates that l-tryptophan supplementation may support restful sleep. In a double-blind, placebo-controlled study, l-tryptophan supported healthy processing and promoted positive outlook in women. In a separate study, it lessened occasional irritability during the menstrual cycle. l-Tryptophan also supports healthy sleep quality, onset and duration. Additional research suggests that tryptophan may promote relaxation and help control occasional cravings. Vitamin B6 provides enhanced support as an important cofactor involved in the metabolism of l-tryptophan. Review: I use every day, helps me a lot - I don’t use as directed, I take 3 in the evening. 3 hours later, I get groggy enough to fall asleep. For me, 3 hours later I burp a lot but after 10 mins or so it’s much easier to sleep. I took advilpm and 4xcedrin pm for decades, and I like that this is a natural remedy. Review: All natural - Good sleep aid ## Features - Restful Sleep: Supports sleep quality, onset and duration.* - Relaxation Support: Additional research suggests that tryptophan may promote relaxation and help control occasional cravings.* - Pure Quality: Our supplements are made with only premium ingredients sourced from trusted suppliers and guided by our nutritional experts, then carefully manufactured and tested to verify their potency and purity. - Pure Difference: What makes us different isn't just our process or what goes into our supplements -- what we leave out matters, too. Pure Encapsulations products are FREE FROM wheat, eggs, tree nuts & peanuts, gluten, artificial colors, flavors & sweeteners, coatings and shellacs, GMOs, and unnecessary binders, fillers & preservatives. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07H8N948R | | Age Range Description | Adult | | Best Sellers Rank | #163,224 in Health ( See Top 100 in Health ) #2,349 in Amino Acid Nutritional Supplements #4,466 in Multiple Vitamin-Mineral Combination Supplements | | Brand | Pure Encapsulations | | Brand Name | Pure Encapsulations | | Color | red | | Container Type | Bottle | | Customer Reviews | 4.9 out of 5 stars 44 Reviews | | Dosage Form | Capsule | | Flavor | Unflavored | | Flavour | Unflavored | | Item Dimensions | 10.8 x 10.6 x 9.3 centimeters | | Item Form | Capsule | | Item Weight | 0.18 Kilograms | | Item dimensions L x W x H | 10.8 x 10.6 x 9.3 centimeters | | Item form | Capsule | | Item weight | 0.18 Kilograms | | Manufacturer | Pure Encapsulations | | Manufacturer Part Number | B07H8N948R | | Material Features | Food Safe | | Number of Items | 1 | | Product Benefits | Sleep Support | | Special Ingredients | Amino Acids | | Specific Uses For Product | Laboratory | | Total Servings Per Container | 60 | | Unit Count | 180 Count | | Unit count | 180 Count | ## Product Details - **Age range (description):** Adult - **Brand:** Pure Encapsulations - **Flavour:** Unflavored - **Item dimensions L x W x H:** 10.8 x 10.6 x 9.3 centimeters - **Item form:** Capsule - **Item weight:** 0.18 Kilograms - **Package information:** Bottle - **Product benefits:** Sleep Support - **Special ingredients:** Amino Acids - **Unit count:** 180 Count ## Images ![Pure Encapsulations L-Tryptophan | Amino Acid Supplement for Relaxation, Serotonin Support, PMS, and Sleep* | 180 Capsules - Image 1](https://m.media-amazon.com/images/I/710FsR3UvjL.jpg) ![Pure Encapsulations L-Tryptophan | Amino Acid Supplement for Relaxation, Serotonin Support, PMS, and Sleep* | 180 Capsules - Image 2](https://m.media-amazon.com/images/I/817EObVK42L.jpg) ![Pure Encapsulations L-Tryptophan | Amino Acid Supplement for Relaxation, Serotonin Support, PMS, and Sleep* | 180 Capsules - Image 3](https://m.media-amazon.com/images/I/81Y1BCDur9L.jpg) ![Pure Encapsulations L-Tryptophan | Amino Acid Supplement for Relaxation, Serotonin Support, PMS, and Sleep* | 180 Capsules - Image 4](https://m.media-amazon.com/images/I/816Jy2t2FdL.jpg) ![Pure Encapsulations L-Tryptophan | Amino Acid Supplement for Relaxation, Serotonin Support, PMS, and Sleep* | 180 Capsules - Image 5](https://m.media-amazon.com/images/I/81vK+P0ldKL.jpg) ## Questions & Answers **Q: What is the source of the dextrose used for this tryptophane? Is any part of it sourced or manufctured outside the US?** A: There is no dextrin in the Pure Encapsulations L-Tryptophan. The l-tryptophan is sourced from the USA and the pyridoxal 5’ phosphate is sourced from China. As with all raw materials, each batch of ingredients received by Pure Encapsulations is tested upon reception for identity, potency (if applicable) and contaminants, which can include heavy metals, residual solvents, allergens, pesticide residues and others depending on ingredient and level of risk. The raw materials are blended and encapsulated in the USA. **Q: what mg?** A: Pure Encapsulations - L-Tryptophan contains 6.7 mg of Vitamin B6 and 1000 mg of TryptoPure per 2 capsules. **Q: is this made from GMO corn?** A: All Pure Encapsulations ingredients, including those derived from corn, are GMO-free. **Q: Is this made by fermentation?** A: L-Tryptophan is derived from corn dextrose fermentation. The corn dextrose fermentation process starts with isolating dextrose from corn (a sugar, so does not contain allergenic corn protein), which is then fed to micro-organisms. The micro-organisms produce these nutrients, and the nutrients are then isolated and purified away from the starting materials. While no corn proteins or sugar remain in the final product (and Pure has tested with negative results), they do not routinely test for corn allergens and therefore they would not be able to guarantee its safety for someone with a corn allergy. It is generally well tolerated by individuals who are corn sensitive. ## Customer Reviews ### ⭐⭐⭐⭐⭐ I use every day, helps me a lot *by A***E on 6 September 2019* I don’t use as directed, I take 3 in the evening. 3 hours later, I get groggy enough to fall asleep. For me, 3 hours later I burp a lot but after 10 mins or so it’s much easier to sleep. I took advilpm and 4xcedrin pm for decades, and I like that this is a natural remedy. ### ⭐⭐⭐⭐⭐ All natural *by O***N on 8 May 2019* Good sleep aid ## Frequently Bought Together - Pure Encapsulations L-Tryptophan | Amino Acid Supplement for Relaxation, Serotonin Support, PMS, and Sleep* | 180 Capsules - Pure Encapsulations Magnesium (Glycinate) - Supplement to Support Stress Relief, Sleep, Heart Health, Nerves, Muscles, and Metabolism* - with Magnesium Glycinate - 180 Capsules - Pure Encapsulations GABA - Supplement to Support Relaxation & Moderation of Occasional Stress - with Premium GABA Amino Acids - 120 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/428704243-pure-encapsulations-l-tryptophan-amino-acid-supplement-for-relaxation-serotonin](https://www.desertcart.us/products/428704243-pure-encapsulations-l-tryptophan-amino-acid-supplement-for-relaxation-serotonin) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-08*