[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"research-sidebar-rollups":3,"research-niche-uk-health-personal-care-l-theanine-200mg":137},[4,11,18,25,32,39,46,53,60,67,74,81,88,95,102,109,116,123,130],{"nodeId":5,"label":6,"slug":7,"href":8,"nichesTracked":9,"marketSizeTotal":10},"11052591","Home & Garden","home-garden","\u002Fresearch\u002Fuk\u002Fhome-garden",5777,1496729572,{"nodeId":12,"label":13,"slug":14,"href":15,"nichesTracked":16,"marketSizeTotal":17},"344155031","Grocery","grocery","\u002Fresearch\u002Fuk\u002Fgrocery",2977,930144869,{"nodeId":19,"label":20,"slug":21,"href":22,"nichesTracked":23,"marketSizeTotal":24},"66280031","Health & Personal Care","health-personal-care","\u002Fresearch\u002Fuk\u002Fhealth-personal-care",2063,840581432,{"nodeId":26,"label":27,"slug":28,"href":29,"nichesTracked":30,"marketSizeTotal":31},"560800","Electronics & Photo","electronics-photo","\u002Fresearch\u002Fuk\u002Felectronics-photo",1488,662299037,{"nodeId":33,"label":34,"slug":35,"href":36,"nichesTracked":37,"marketSizeTotal":38},"117333031","Beauty","beauty","\u002Fresearch\u002Fuk\u002Fbeauty",2481,653104681,{"nodeId":40,"label":41,"slug":42,"href":43,"nichesTracked":44,"marketSizeTotal":45},"79904031","DIY & Tools","diy-tools","\u002Fresearch\u002Fuk\u002Fdiy-tools",2225,502438109,{"nodeId":47,"label":48,"slug":49,"href":50,"nichesTracked":51,"marketSizeTotal":52},"340832031","Computers & Accessories","computers-accessories","\u002Fresearch\u002Fuk\u002Fcomputers-accessories",1028,445978821,{"nodeId":54,"label":55,"slug":56,"href":57,"nichesTracked":58,"marketSizeTotal":59},"11961408031","Fashion","fashion","\u002Fresearch\u002Fuk\u002Ffashion",2461,370780225,{"nodeId":61,"label":62,"slug":63,"href":64,"nichesTracked":65,"marketSizeTotal":66},"340841031","Pet Supplies","pet-supplies","\u002Fresearch\u002Fuk\u002Fpet-supplies",875,283781189,{"nodeId":68,"label":69,"slug":70,"href":71,"nichesTracked":72,"marketSizeTotal":73},"595314","Toys & Games","toys-games","\u002Fresearch\u002Fuk\u002Ftoys-games",1773,238165752,{"nodeId":75,"label":76,"slug":77,"href":78,"nichesTracked":79,"marketSizeTotal":80},"319530011","Sports & Outdoors","sports-outdoors","\u002Fresearch\u002Fuk\u002Fsports-outdoors",792,192105477,{"nodeId":82,"label":83,"slug":84,"href":85,"nichesTracked":86,"marketSizeTotal":87},"192414031","Stationery & Office Supplies","stationery-office-supplies","\u002Fresearch\u002Fuk\u002Fstationery-office-supplies",835,166331511,{"nodeId":89,"label":90,"slug":91,"href":92,"nichesTracked":93,"marketSizeTotal":94},"60032031","Baby Products","baby-products","\u002Fresearch\u002Fuk\u002Fbaby-products",638,162171515,{"nodeId":96,"label":97,"slug":98,"href":99,"nichesTracked":100,"marketSizeTotal":101},"248878031","Automotive","automotive","\u002Fresearch\u002Fuk\u002Fautomotive",811,162029817,{"nodeId":103,"label":104,"slug":105,"href":106,"nichesTracked":107,"marketSizeTotal":108},"5866055031","Business, Industry & Science","business-industry-science","\u002Fresearch\u002Fuk\u002Fbusiness-industry-science",741,147753245,{"nodeId":110,"label":111,"slug":112,"href":113,"nichesTracked":114,"marketSizeTotal":115},"213078031","Lighting","lighting","\u002Fresearch\u002Fuk\u002Flighting",370,66322056,{"nodeId":117,"label":118,"slug":119,"href":120,"nichesTracked":121,"marketSizeTotal":122},"908799031","Large Appliances","large-appliances","\u002Fresearch\u002Fuk\u002Flarge-appliances",75,45125377,{"nodeId":124,"label":125,"slug":126,"href":127,"nichesTracked":128,"marketSizeTotal":129},"340838031","Musical Instruments & DJ","musical-instruments-dj","\u002Fresearch\u002Fuk\u002Fmusical-instruments-dj",171,40128933,{"nodeId":131,"label":132,"slug":133,"href":134,"nichesTracked":135,"marketSizeTotal":136},"72954031","Everything Else","everything-else","\u002Fresearch\u002Fuk\u002Feverything-else",25,1318358,{"amazonNicheId":138,"marketplaceFlag":139,"country":140,"category":143,"niche":144,"verdict":181,"baselines":221,"demand":226,"seasonality":303,"brandShare":304,"products":325,"feedback":456,"searchTerms":594,"related":604,"lastUpdated":166},"6cf5c2dc-8cbd-4bd1-954e-1dd2edf813be","uk",{"flag":139,"name":141,"currency":142},"United Kingdom","GBP",{"nodeId":19,"label":20,"slug":21,"href":22},{"marketSize":145,"searchVolume":146,"growth360":147,"growth90":148,"searchConversion":149,"top5ClickShare":150,"top5BrandShare":150,"avgRating":151,"avgReviewCount":152,"avgPrice":153,"priceMin":154,"priceMax":155,"productCount":156,"unitsSoldMax":157,"sponsoredPct":158,"returnRate":159,"successfulLaunches360":160,"newProducts360":161,"amazonNicheId":138,"title":162,"slug":163,"href":164,"leafCategoryName":165,"scrapedAt":166,"brandCount":156,"brandCountYearAgo":167,"sellerCount":168,"signals":169,"avgBsr":170,"pageQuality":171,"unitsSoldMin":172,"unitsSoldAvgMin":173,"unitsSoldAvgMax":174,"revenueMin":175,"revenueMax":176,"avgBrandAgeMonths":177,"avgSellerAgeDays":178,"top20ClickShare":179,"top20BrandShare":179,"primePct":179,"oosRate":180},59598,37720,3.7608,0.0915,0.1546,0.7307,4.38,1155,10.22,5.53,17.81,13,6000,0.9231,0.0004,2,4,"l theanine 200mg","l-theanine-200mg","\u002Fresearch\u002Fuk\u002Fhealth-personal-care\u002Fl-theanine-200mg","Over-the-Counter Medication","2026-07-25T00:05:30.742945+00:00",8,17,[],158,0,5000,500,750,51100,61320,34,173,1,0.1259,{"score":182,"verdict":183,"components":184},48,"skip",[185,190,193,197,200,203,206,211,214,217],{"key":186,"score":187,"weight":188,"raw":189},"marketSize",15,0.15,59598.05,{"key":191,"score":192,"weight":188,"raw":148},"growth",36,{"key":194,"score":195,"weight":196,"raw":149},"conversion",97,0.1,{"key":198,"score":199,"weight":188,"raw":150},"competition",22,{"key":201,"score":202,"weight":196,"raw":150},"brandShare",53,{"key":204,"score":205,"weight":196,"raw":151},"qualityGap",62,{"key":207,"score":208,"weight":209,"raw":210},"reviewMoat",59,0.05,1154.77,{"key":212,"score":213,"weight":196,"raw":159},"returns",100,{"key":215,"score":216,"weight":209,"raw":153},"avgPrice",35,{"key":218,"score":219,"weight":209,"raw":220},"priceRange",23,0.22882736156351785,{"avgRating":222,"medianPrice":223,"medianReturnRate":224,"nichesTracked":225},4.36,12.12,0.0064,27606,{"points":227,"droppedPartialWeek":302},[228,231,234,237,240,243,246,249,251,254,257,260,263,266,269,272,275,278,281,284,287,290,293,296,299],{"week":229,"volume":230},"2026-02-01",764,{"week":232,"volume":233},"2026-02-08",815,{"week":235,"volume":236},"2026-02-15",893,{"week":238,"volume":239},"2026-02-22",700,{"week":241,"volume":242},"2026-03-01",729,{"week":244,"volume":245},"2026-03-08",743,{"week":247,"volume":248},"2026-03-15",784,{"week":250,"volume":239},"2026-03-22",{"week":252,"volume":253},"2026-03-29",672,{"week":255,"volume":256},"2026-04-05",873,{"week":258,"volume":259},"2026-04-12",1144,{"week":261,"volume":262},"2026-04-19",1522,{"week":264,"volume":265},"2026-04-26",1311,{"week":267,"volume":268},"2026-05-03",1249,{"week":270,"volume":271},"2026-05-10",1138,{"week":273,"volume":274},"2026-05-17",987,{"week":276,"volume":277},"2026-05-24",910,{"week":279,"volume":280},"2026-05-31",726,{"week":282,"volume":283},"2026-06-07",804,{"week":285,"volume":286},"2026-06-14",845,{"week":288,"volume":289},"2026-06-21",866,{"week":291,"volume":292},"2026-06-28",765,{"week":294,"volume":295},"2026-07-05",860,{"week":297,"volume":298},"2026-07-12",892,{"week":300,"volume":301},"2026-07-19",867,false,null,{"top":305,"otherBrandCount":323,"otherClickShare":324},[306,309,312,315,318,320],{"brand":307,"clickShare":308},"Nutricost",0.4064,{"brand":310,"clickShare":311},"ALPHA01",0.1321,{"brand":313,"clickShare":314},"NATURE'S BEST",0.0877,{"brand":316,"clickShare":317},"NUTRINATION",0.0544,{"brand":319,"clickShare":209},"Health Thru Nutrition",{"brand":321,"clickShare":322},"NEW LEAF PRODUCTS",0.0482,7,0.22119999999999995,[326,336,346,356,365,374,383,394,404,413,424,435,445],{"asin":327,"title":328,"brand":307,"imageUrl":329,"price":330,"rating":331,"reviews":332,"clickShare90":308,"clickShare360":333,"launchDate":334,"amazonUrl":335},"B01B3RWQNM","Nutricost L-Theanine 200mg 120 Capsules - Non-GMO Gluten Free","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F41yYKhPQMbL.jpg",6.66,4.4,9555,0.4154,"2016-07-01","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB01B3RWQNM",{"asin":337,"title":338,"brand":310,"imageUrl":339,"price":340,"rating":341,"reviews":342,"clickShare90":311,"clickShare360":343,"launchDate":344,"amazonUrl":345},"B09883BLBT","L-Theanine 200mg from Green Tea - 90 Vegan Capsules - Amino Acid Supplement Resealable and Recyclable Pouch by Alpha01","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F41fQyA9MFBL.jpg",5.66,4.3,742,0.2303,"2020-06-09","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB09883BLBT",{"asin":347,"title":348,"brand":313,"imageUrl":349,"price":350,"rating":351,"reviews":352,"clickShare90":314,"clickShare360":353,"launchDate":354,"amazonUrl":355},"B0FVGC5GX4","Natures Best L Theanine 200mg 60 Capsules (2 Month Supply)","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F41QoeZGcK9L.jpg",10.71,4.7,49,0.0498,"2025-10-09","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB0FVGC5GX4",{"asin":357,"title":358,"brand":316,"imageUrl":359,"price":360,"rating":361,"reviews":128,"clickShare90":317,"clickShare360":362,"launchDate":363,"amazonUrl":364},"B0DJM84N9K","L Theanine 400mg Capsules - 99.6% Pure L-Theanine | 5 Months Supply - 150 Capsules | Supports Relaxation & Focus Promotes Calm | Zero Additives Vegan & Non-GMO | GMP - Certified Lab Tested","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F41BIiCQeXqL.jpg",9.48,4.6,0.031,"2024-10-07","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB0DJM84N9K",{"asin":366,"title":367,"brand":319,"imageUrl":368,"price":369,"rating":161,"reviews":370,"clickShare90":209,"clickShare360":371,"launchDate":372,"amazonUrl":373},"B074VDBH38","L-Theanine 200mg Vegan as PhytoSure Certified | Supports Healthy Relaxation & Focus | 3rd Party Tested | Clean Label Non-GMO Gluten & Soy Free Hypoallergenic | by Health Thru Nutrition (Pack of 60)","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F41gU3MUP1JL.jpg",8.35,126,0.0304,"2017-08-15","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB074VDBH38",{"asin":375,"title":376,"brand":321,"imageUrl":377,"price":378,"rating":379,"reviews":242,"clickShare90":322,"clickShare360":380,"launchDate":381,"amazonUrl":382},"B0CXF33DB8","L Theanine Enriched with Vitamin B6 - High Strength L-Theanine Capsules 400mg Natural Nootropics from Green Tea - 120 Vegan Capsules - Made in The UK Supplements by New Leaf","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F41jJimQ67qL.jpg",7.99,4.5,0.0494,"2024-03-07","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB0CXF33DB8",{"asin":384,"title":385,"brand":386,"imageUrl":387,"price":388,"rating":379,"reviews":389,"clickShare90":390,"clickShare360":391,"launchDate":392,"amazonUrl":393},"B0G1M87Y4T","L-Theanine 200mg 240 Vegan Capsules High Strength Amino Acid from Green Tea | 8-Month Supply | 98% Pure No Additives | Danish Made","Source of Nature","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F51SU5ggTPIL.jpg",11.49,96,0.0464,0.0169,"2025-11-10","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB0G1M87Y4T",{"asin":395,"title":396,"brand":397,"imageUrl":398,"price":154,"rating":161,"reviews":399,"clickShare90":400,"clickShare360":401,"launchDate":402,"amazonUrl":403},"B0GJV27PV3","L-Theanine Green Tea Extract with Added Lemon Balm Extract and Chelated Magnesium Glycinate - Derived from Green Tea Leaves - Sleep & Relaxation Support - Mental Clarity","SS Sport Supplies","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F41eauMkJTpL.jpg",46,0.0399,0.0179,"2026-01-26","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB0GJV27PV3",{"asin":405,"title":406,"brand":407,"imageUrl":408,"price":155,"rating":341,"reviews":409,"clickShare90":410,"clickShare360":317,"launchDate":411,"amazonUrl":412},"B0C6TW9LHS","L Theanine 200mg - 180 Capsules - 6 Months Supply | Vegan L-Theanine Capsules | Nootropics Supplement | No Artificial Fillers & Gluten Free | Ambervit","Ambervit","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F41SXjZLJyGL.jpg",180,0.0326,"2023-08-08","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB0C6TW9LHS",{"asin":414,"title":415,"brand":416,"imageUrl":417,"price":418,"rating":331,"reviews":419,"clickShare90":420,"clickShare360":421,"launchDate":422,"amazonUrl":423},"B09SPMYGHQ","Now Foods L-Theanine 200mg 60 Vegan Capsules Amino Acid Lab-Tested Gluten Free Soy Free Non-GMO","NOW","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F41x-yr+BtnL.jpg",17.18,165,0.0305,0.0328,"2022-12-30","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB09SPMYGHQ",{"asin":425,"title":426,"brand":427,"imageUrl":428,"price":429,"rating":341,"reviews":430,"clickShare90":431,"clickShare360":432,"launchDate":433,"amazonUrl":434},"B091FV1FHQ","L-Theanine - 401mg - 180 Capsules - 6 Months Supply - with Vitamin B6","WeightWorld","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F41g198fZTnL.jpg",12.81,2645,0.0297,0.0436,"2021-03-31","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB091FV1FHQ",{"asin":436,"title":437,"brand":438,"imageUrl":439,"price":440,"rating":331,"reviews":216,"clickShare90":441,"clickShare360":442,"launchDate":443,"amazonUrl":444},"B0FZW7882R","L Theanine Gummies - 200 mg L-Theanine Supplement with Lemon Balm & Vitamin B6 - Supports Nervous System & Hormonal Function - Vegan Halal - 60 Count - Novomins","novomins","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F41TNzaLVthL.jpg",11.47,0.0214,0.0072,"2026-01-21","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB0FZW7882R",{"asin":446,"title":447,"brand":448,"imageUrl":449,"price":450,"rating":361,"reviews":451,"clickShare90":452,"clickShare360":453,"launchDate":454,"amazonUrl":455},"B0CVR1J7NY","L Theanine 400mg | 120 Vegan Capsules - 4 Months Supply | Good Alternative to L-Theanine Powder Gummies and Drops | UK Made LTheanine Supplement","Nutrivo","https:\u002F\u002Fm.media-amazon.com\u002Fimages\u002FI\u002F51caJdJDGiL.jpg",7.73,473,0.0207,0.0209,"2024-03-17","https:\u002F\u002Fwww.amazon.co.uk\u002Fdp\u002FB0CVR1J7NY",{"love":457,"hate":527,"returnReasons":593},[458,465,472,479,486,493,500,507,514,521],{"topic":459,"percentOfMentions":460,"verbatims":461},"Sleep Quality",0.1794,[462,463,464],"Great sleep quality","Helpful for sleep","Helps me sleep",{"topic":466,"percentOfMentions":467,"verbatims":468},"Stress\u002FAnxiety",0.09369999999999999,[469,470,471],"Great for anxiety","Really helped with my anxiety","Works really well for anxiety",{"topic":473,"percentOfMentions":474,"verbatims":475},"Value For Money",0.065,[476,477,478],"reasonable price","Fantastic price","good value",{"topic":480,"percentOfMentions":481,"verbatims":482},"Focus Enhancement",0.061900000000000004,[483,484,485],"less brain fog","Good for focus","helps with focus",{"topic":487,"percentOfMentions":488,"verbatims":489},"Ease Of Chewing\u002FSwallowing",0.048499999999999995,[490,491,492],"I found the chewy","they are a much nicer option than swallowing tablets","Easy to swallow",{"topic":494,"percentOfMentions":495,"verbatims":496},"Quality-Overall",0.0466,[497,498,499],"Overall, a solid product that does exactly what I hoped it would","Very good quality capsules","excellent quality",{"topic":501,"percentOfMentions":502,"verbatims":503},"Vitamin",0.0424,[504,505,506],"Great supplement","Nice vitamin","Overall a very effective supplement",{"topic":508,"percentOfMentions":509,"verbatims":510},"Taste-Overall",0.0406,[511,512,513],"Taste is pleasant","Works for me and tastes delicious","These gummies taste great",{"topic":515,"percentOfMentions":516,"verbatims":517},"Ease Of Use",0.038599999999999995,[518,519,520],"ease of use","Easy to take","easy to read",{"topic":522,"percentOfMentions":371,"verbatims":523},"Efficiency",[524,525,526],"Effective","Works Well","Works Reliably",[528,534,541,548,555,561,567,573,579,586],{"topic":459,"percentOfMentions":529,"verbatims":530},0.0817,[531,532,533],"was not sleeping very well","No improvement in sleep yet","didn't help my sleep",{"topic":535,"percentOfMentions":536,"verbatims":537},"Smell",0.0728,[538,539,540],"However this bag really smells","Smelled absolutely awful","Strong smell now",{"topic":542,"percentOfMentions":543,"verbatims":544},"Functionality-Overall",0.050499999999999996,[545,546,547],"Didn't work for me","Zero effect. Absolutely zero effect. These just didn't work in any way for me at all.","Dont work",{"topic":549,"percentOfMentions":550,"verbatims":551},"Dosage",0.0458,[552,553,554],"Not 200mg","countless prescriptions hasn't been able to achieve","My partner took a double dose by mistake",{"topic":466,"percentOfMentions":556,"verbatims":557},0.0317,[558,559,560],"I suffer from bad anxiety and dpdr","This had me waking myself up out of my sleep multiple times—sweaty, terrified, and clutching my pillow like a final girl in a slasher flick","as someone who has always struggled with horrendous anxiety its been difficult",{"topic":562,"percentOfMentions":431,"verbatims":563},"Side Effects",[564,565,566],"Gave me headaches","The effects are not always super obvious straight away","Has opposite effect on me",{"topic":494,"percentOfMentions":568,"verbatims":569},0.0258,[570,571,572],"Not the best","poor quality Package arrived with seal opened This is unacceptable","Average product",{"topic":508,"percentOfMentions":574,"verbatims":575},0.025099999999999997,[576,577,578],"have no taste","has a chemical taste","dont taste of anything",{"topic":580,"percentOfMentions":581,"verbatims":582},"Ingredients-Overall",0.0246,[583,584,585],"Pills and content changed","s no change in the actual content","Wanted a refund having to contact the company direct no ingredients list on Amazon no mention of rice flour I am highly allergic to",{"topic":587,"percentOfMentions":588,"verbatims":589},"Vegan\u002FOrganic",0.0235,[590,591,592],"It's no longer organic, and now contains less of the source ingredient and more fillers","The extract seems less pure","Non-veg",[],[595,599],{"term":162,"volume":596,"growthQoq":597,"conversionRate":598},22670,0.22,0.1417,{"term":600,"volume":601,"growthQoq":602,"conversionRate":603},"l-theanine 200mg",15050,-0.0909,0.1407,[605,612,619,624,629,634],{"title":606,"href":607,"score":608,"verdict":609,"marketSize":610,"growth90":611},"cooling towel","\u002Fresearch\u002Fuk\u002Fhealth-personal-care\u002Fcooling-towel",69,"launch",1137192.14,74.7069,{"title":613,"href":614,"score":615,"verdict":616,"marketSize":617,"growth90":618},"collagen","\u002Fresearch\u002Fuk\u002Fhealth-personal-care\u002Fcollagen",70,"watch",6648317.48,-0.2012,{"title":620,"href":621,"score":615,"verdict":616,"marketSize":622,"growth90":623},"dry skin remover feet","\u002Fresearch\u002Fuk\u002Fhealth-personal-care\u002Fdry-skin-remover-feet",235925.99,0.7819,{"title":625,"href":626,"score":615,"verdict":616,"marketSize":627,"growth90":628},"stryde knee strap","\u002Fresearch\u002Fuk\u002Fhealth-personal-care\u002Fstryde-knee-strap",112220.17,2797.8158,{"title":630,"href":631,"score":615,"verdict":616,"marketSize":632,"growth90":633},"libre 2 sensor covers","\u002Fresearch\u002Fuk\u002Fhealth-personal-care\u002Flibre-2-sensor-covers",239945.65,0.6712,{"title":635,"href":636,"score":615,"verdict":616,"marketSize":637,"growth90":638},"water retention tablets","\u002Fresearch\u002Fuk\u002Fhealth-personal-care\u002Fwater-retention-tablets",470063.28,0.4718]