{"title":"L-Theanine, 5-HTP \u0026 Ashwagandha","description":"\u003cp\u003eCompare L-theanine, 5-HTP and ashwagandha products on the amount of each ingredient per daily dose and the cost per day. None of these ingredients has an authorised health claim in the UK, so we describe what's in each product, not what it does, and if you're struggling with stress or low mood, speak to your GP.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/collections\/vitamins-health\"\u003eAll vitamins \u0026amp; supplements\u003c\/a\u003e · \u003ca href=\"\/collections\/ashwagandha\"\u003eAshwagandha\u003c\/a\u003e · \u003ca href=\"\/collections\/adaptogens\"\u003eAdaptogens\u003c\/a\u003e · \u003ca href=\"\/collections\/sleep-relaxation\"\u003eSleep \u0026amp; relaxation\u003c\/a\u003e · \u003ca href=\"\/collections\/b-vitamins-b12\"\u003eB vitamins\u003c\/a\u003e · \u003ca href=\"\/collections\/magnesium\"\u003eMagnesium\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eWhat is L-theanine?\u003c\/h2\u003e\n\u003cp\u003eL-theanine is an amino acid found naturally in tea leaves, sold here as capsules, including a branded L-theanine ingredient called Suntheanine. It has no authorised health claim, so we don't say it reduces stress or affects mood.\u003c\/p\u003e\n\u003cp\u003eCompare the milligrams of L-theanine per capsule and per daily dose, and the cost per day. Some products combine it with other ingredients, so check the full label.\u003c\/p\u003e\n\u003ch2\u003eWhat do supplements for stress actually contain?\u003c\/h2\u003e\n\u003cp\u003eBesides L-theanine, this collection holds 5-HTP (a compound the body makes from the amino acid tryptophan), ashwagandha root extract (capsules and gummies) and a relax-themed gummy blend. The only mood-related wording that is authorised belongs to certain vitamins and minerals, for example \"Magnesium contributes to normal psychological function\" and \"Vitamin B12 contributes to normal psychological function\", usable only where a product is at least a source of that nutrient (\u003ca href=\"https:\/\/www.legislation.gov.uk\/eur\/2012\/432\/annex\"\u003eGB claims register\u003c\/a\u003e).\u003c\/p\u003e\n\u003cp\u003eAshwagandha needs particular care: the US National Institutes of Health says \u003ca href=\"https:\/\/www.nccih.nih.gov\/health\/ashwagandha\"\u003eashwagandha should be avoided during pregnancy\u003c\/a\u003e and while breastfeeding, and doesn't recommend it for people with thyroid or autoimmune disorders. Supplements can interact with medicines, including antidepressants: the NHS says some remedies and supplements may not mix well with sertraline, and its advice is to \u003ca href=\"https:\/\/www.nhs.uk\/medicines\/sertraline\/taking-sertraline-with-other-medicines-and-herbal-supplements\/\"\u003etell your doctor if you're taking any other medicines, herbal remedies, vitamins or supplements\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eWhat does the NHS advise for stress?\u003c\/h2\u003e\n\u003cp\u003eThe NHS advice starts with everyday steps, not supplements: \u003ca href=\"https:\/\/www.nhs.uk\/mental-health\/self-help\/guides-tools-and-activities\/tips-to-reduce-stress\/\"\u003ebe active, connect with people, take time for yourself\u003c\/a\u003e and avoid relying on alcohol, smoking or caffeine.\u003c\/p\u003e\n\u003cp\u003eThe NHS says to see a GP \u003ca href=\"https:\/\/www.nhs.uk\/mental-health\/feelings-symptoms-behaviours\/feelings-and-symptoms\/stress\/\"\u003eif you're struggling to cope with stress\u003c\/a\u003e or the things you're trying aren't helping, and adults can refer themselves to NHS talking therapies. If you need help urgently, call NHS 111; in an emergency, call 999. Speak to your GP or pharmacist before taking any product here if you take medication, have a medical condition, or are pregnant or breastfeeding.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cem\u003eWe sell the products on this page. That's our commercial interest, and it's why we show the evidence alongside them. This page is \u003ca href=\"\/pages\/health-information-disclaimer\"\u003egeneral information for adults, not personalised medical advice\u003c\/a\u003e. Food supplements should not replace a varied, balanced diet.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWritten by \u003ca href=\"\/pages\/about-us\"\u003eAndy Arshad\u003c\/a\u003e, SupplementHQ. Last reviewed 11 October 2026.\u003c\/em\u003e\u003c\/p\u003e","products":[{"product_id":"allnutrition-ashwagandha-ksm","title":"Allnutrition Ashwagandha KSM","description":"\u003cp\u003eAllnutrition's take on targeted daily nutritional support, in a tablets format that is easy to keep to day after day.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow to use\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTake as directed on the pack, ideally with food and at the same time each day.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFormat: tablets\u003c\/li\u003e\n\u003cli\u003eCaffeine free\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"legal\"\u003eA food supplement, not a substitute for a varied diet and healthy lifestyle. Do not exceed the stated dose. Keep out of reach of children.\u003c\/p\u003e","brand":"Allnutrition","offers":[{"title":"100 tablets","offer_id":58298952417611,"sku":"5902837746883","price":10.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1077\/4937\/6331\/files\/image_2023-12-08_6572e631ef551.jpg?v=1788020229"},{"product_id":"cytoplan-5-htp-plus","title":"Cytoplan 5-HTP Plus","description":"\u003cp\u003eCytoplan 5-HTP Plus gives you 5-HTP in a straightforward vcaps format.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it is\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eDerived from Griffonia simplicifolia seed\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to use\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTake as directed on the pack.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFormat: vcaps\u003c\/li\u003e\n\u003cli\u003eCaffeine free\u003c\/li\u003e\n\u003cli\u003eVegetarian-friendly capsule shell\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"legal\"\u003eA food supplement, not a substitute for a varied diet and healthy lifestyle. Do not exceed the stated dose. Keep out of reach of children.\u003c\/p\u003e","brand":"Cytoplan","offers":[{"title":"60 vcaps","offer_id":58301533815115,"sku":"5060202181384","price":18.59,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1077\/4937\/6331\/files\/image_2025-11-25_6925a2fa143f6.jpg?v=1788045639"},{"product_id":"life-extension-l-theanine","title":"Life Extension L-Theanine","description":"\u003cp\u003eL-theanine, in Life Extension's vcaps format.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it is\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAn amino acid found naturally in tea leaves\u003c\/li\u003e\n\u003cli\u003eOften paired with caffeine, or taken on its own in the evening\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to use\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTake as directed on the pack.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFormat: vcaps\u003c\/li\u003e\n\u003cli\u003eCaffeine free\u003c\/li\u003e\n\u003cli\u003eVegetarian-friendly capsule shell\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"legal\"\u003eA food supplement, not a substitute for a varied diet and healthy lifestyle. Do not exceed the stated dose. Keep out of reach of children.\u003c\/p\u003e","brand":"Life Extension","offers":[{"title":"60 vcaps","offer_id":58301643096395,"sku":"737870168362","price":22.17,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1077\/4937\/6331\/files\/image_2025-07-17_6878f923945c8.jpg?v=1788046960"},{"product_id":"doctors-best-l-theanine-with-suntheanine","title":"Doctor's Best L-Theanine with Suntheanine","description":"\u003cp\u003eDoctor's Best L-Theanine with Suntheanine gives you L-theanine in a straightforward vcaps format.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it is\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAn amino acid found naturally in tea leaves\u003c\/li\u003e\n\u003cli\u003eSuntheanine is a branded, patented form of L-theanine\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to use\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTake as directed on the pack.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFormat: vcaps\u003c\/li\u003e\n\u003cli\u003eCaffeine free\u003c\/li\u003e\n\u003cli\u003eVegetarian-friendly capsule shell\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"legal\"\u003eA food supplement, not a substitute for a varied diet and healthy lifestyle. Do not exceed the stated dose. Keep out of reach of children.\u003c\/p\u003e","brand":"Doctor's Best","offers":[{"title":"150mg - 90 vcaps","offer_id":58301643129163,"sku":"753950001978","price":27.39,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1077\/4937\/6331\/files\/image_2026-03-06_69aa9d1441e7f.jpg?v=1788046961"},{"product_id":"now-foods-l-theanine","title":"NOW Foods L-Theanine","description":"\u003cp\u003eNOW Foods L-Theanine keeps it simple: L-theanine, 28 grams per pack.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it is\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAn amino acid found naturally in tea leaves\u003c\/li\u003e\n\u003cli\u003ePure powder, so the serving is measured with a scoop\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to use\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTake as directed on the pack.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFormat: powder\u003c\/li\u003e\n\u003cli\u003eCaffeine free\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"legal\"\u003eA food supplement, not a substitute for a varied diet and healthy lifestyle. Do not exceed the stated dose. Keep out of reach of children.\u003c\/p\u003e","brand":"NOW Foods","offers":[{"title":"28 grams","offer_id":58301643161931,"sku":"733739002624","price":24.57,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1077\/4937\/6331\/files\/image_2017-05-03_59099b56a037f.jpg?v=1788046961"},{"product_id":"weider-relax-gummies","title":"Weider Relax Gummies","description":"\u003cp\u003eL-theanine and L-tryptophan with passionflower, lemon balm and vitamin B6, in a sugar-free citrus gummy.\u003c\/p\u003e\u003ch3\u003eWhy people take it\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVitamin B6 contributes to normal psychological function\u003c\/li\u003e\n\u003cli\u003eVitamin B6 contributes to the normal functioning of the nervous system\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat it is\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eL-theanine and L-tryptophan\u003c\/li\u003e\n\u003cli\u003ePassionflower (Passiflora) and lemon balm (Melissa)\u003c\/li\u003e\n\u003cli\u003eVitamin B6\u003c\/li\u003e\n\u003cli\u003eSugar-free and gluten-free\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow to use\u003c\/h3\u003e\u003cp\u003eChew as directed on the pack.\u003c\/p\u003e\u003ch3\u003eGood to know\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCitrus punch flavour\u003c\/li\u003e\n\u003cli\u003eSugar-free\u003c\/li\u003e\n\u003cli\u003eGluten-free\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"legal\"\u003eA food supplement, not a substitute for a varied diet and healthy lifestyle. Do not exceed the stated dose. Keep out of reach of children.\u003c\/p\u003e","brand":"Weider","offers":[{"title":"40 gummies","offer_id":58329966117195,"sku":"8414192347805","price":7.49,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1077\/4937\/6331\/files\/image_2024-10-31_67237324aa0fe.jpg?v=1788293202"}],"url":"https:\/\/supplementhq.co.uk\/collections\/stress-mood-support.oembed","provider":"SupplementHQ","version":"1.0","type":"link"}