{"product_id":"l-theanine","title":"L-Theanine","description":"\u003cdiv class=\"flex h-svh w-screen flex-col\"\u003e\n\u003cdiv class=\"relative z-0 flex min-h-0 w-full flex-1\"\u003e\n\u003cdiv class=\"relative flex min-h-0 w-full flex-1\"\u003e\n\u003cdiv class=\"@container\/main relative flex min-w-0 flex-1 flex-col -translate-y-[calc(env(safe-area-inset-bottom,0px)\/2)] pt-[calc(env(safe-area-inset-bottom,0px)\/2)]\"\u003e\n\u003cdiv data-scroll-root=\"\" class=\"@w-sm\/main:[scrollbar-gutter:stable_both-edges] touch:[scrollbar-width:none] relative flex min-h-0 min-w-0 flex-1 flex-col [scrollbar-gutter:stable] not-print:overflow-x-clip not-print:overflow-y-auto scroll-pt-(--header-height) [--sticky-padding-top:var(--header-height)] has-data-[fixed-header=less-than-xl]:@w-xl\/main:scroll-pt-0 has-data-[fixed-header=less-than-xl]:@w-xl\/main:[--sticky-padding-top:0px] has-data-[fixed-header=less-than-xxl]:@w-2xl\/main:scroll-pt-0 has-data-[fixed-header=less-than-xxl]:@w-2xl\/main:[--sticky-padding-top:0px]\"\u003e\u003cmain class=\"min-h-0 flex-1\" id=\"main\"\u003e\n\u003cdiv id=\"thread\" class=\"group\/thread flex flex-col min-h-full\"\u003e\n\u003cdiv role=\"presentation\" class=\"composer-parent flex flex-1 flex-col focus-visible:outline-0\"\u003e\n\u003cdiv class=\"relative basis-auto flex-col -mb-(--composer-overlap-px) [--composer-overlap-px:28px] grow flex\"\u003e\n\u003cdiv class=\"flex flex-col text-sm pb-25\" data-pb-monitored=\"true\"\u003e\n\u003carticle class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"87d77d6a-ddfe-46db-b5cc-df7dd475c239\" data-testid=\"conversation-turn-2\" data-scroll-anchor=\"true\" data-turn=\"assistant\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:--spacing(4)] @w-sm\/main:[--thread-content-margin:--spacing(6)] @w-lg\/main:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"85947b1b-7961-4d11-937b-4a21a747b74d\" dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+\u0026amp;]:mt-1\" data-message-model-slug=\"gpt-5-2\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[1px]\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\"\u003e\n\u003cp data-start=\"111\" data-end=\"567\"\u003eL-Theanine is a naturally occurring, non-protein amino acid most commonly found in the leaves of green tea (\u003cem data-start=\"219\" data-end=\"238\"\u003eCamellia sinensis\u003c\/em\u003e). It is best known for its unique ability to promote a state of calm alertness—relaxation without sedation. Structurally similar to glutamate, L-theanine can cross the blood–brain barrier and interact directly with neurotransmitter systems in the brain, which explains its noticeable effects on mood, focus, and stress response.\u003c\/p\u003e\n\u003cp data-start=\"569\" data-end=\"1011\"\u003eUnlike many calming compounds that cause drowsiness, L-theanine works by increasing alpha brain wave activity, a pattern associated with relaxed focus, creativity, and meditative states. This makes it popular among individuals seeking stress relief during the day without impairing mental performance. Because it does not act as a stimulant or depressant, L-theanine is considered gentle, non-habit-forming, and well tolerated by most people.\u003c\/p\u003e\n\u003cp data-start=\"1013\" data-end=\"1213\"\u003eL-theanine is commonly used on its own or paired with caffeine—particularly in nootropic and focus supplements—because it smooths caffeine’s stimulating effects while reducing jitteriness and anxiety.\u003c\/p\u003e\n\u003ch3 data-start=\"1215\" data-end=\"1229\"\u003eBenefits\u003c\/h3\u003e\n\u003cp data-start=\"1231\" data-end=\"1565\"\u003e\u003cstrong data-start=\"1231\" data-end=\"1263\"\u003eStress and Anxiety Reduction\u003c\/strong\u003e\u003cbr data-start=\"1263\" data-end=\"1266\"\u003eOne of the most well-documented benefits of L-theanine is its ability to reduce stress and anxiety. It modulates neurotransmitters such as GABA, serotonin, and dopamine, which are involved in emotional regulation. This helps create a sense of calm without suppressing normal alertness or motivation.\u003c\/p\u003e\n\u003cp data-start=\"1567\" data-end=\"1875\"\u003e\u003cstrong data-start=\"1567\" data-end=\"1611\"\u003eImproved Focus and Cognitive Performance\u003c\/strong\u003e\u003cbr data-start=\"1611\" data-end=\"1614\"\u003eL-theanine enhances attention and concentration, especially when combined with caffeine. While caffeine increases alertness, L-theanine tempers overstimulation, resulting in smoother focus, faster reaction times, and improved mental clarity without the “crash.”\u003c\/p\u003e\n\u003cp data-start=\"1877\" data-end=\"2194\"\u003e\u003cstrong data-start=\"1877\" data-end=\"1902\"\u003eSleep Quality Support\u003c\/strong\u003e\u003cbr data-start=\"1902\" data-end=\"1905\"\u003eAlthough L-theanine is not a sedative, it can improve sleep quality by reducing mental hyperactivity and promoting relaxation before bedtime. It may help people fall asleep more easily and experience deeper, more restorative sleep, particularly when stress or racing thoughts are an issue.\u003c\/p\u003e\n\u003cp data-start=\"2196\" data-end=\"2447\"\u003e\u003cstrong data-start=\"2196\" data-end=\"2216\"\u003eMood Enhancement\u003c\/strong\u003e\u003cbr data-start=\"2216\" data-end=\"2219\"\u003eBy influencing dopamine and serotonin activity, L-theanine may support a more balanced mood. Regular supplementation has been associated with reduced irritability, improved emotional resilience, and better stress coping ability.\u003c\/p\u003e\n\u003cp data-start=\"2449\" data-end=\"2671\"\u003e\u003cstrong data-start=\"2449\" data-end=\"2494\"\u003eCardiovascular and Blood Pressure Support\u003c\/strong\u003e\u003cbr data-start=\"2494\" data-end=\"2497\"\u003eSome studies suggest that L-theanine may help blunt stress-related increases in blood pressure, supporting cardiovascular health during periods of mental or emotional strain.\u003c\/p\u003e\n\u003ch3 data-start=\"2673\" data-end=\"2685\"\u003eDosage\u003c\/h3\u003e\n\u003cp data-start=\"2687\" data-end=\"2750\"\u003eThe effective dosage of L-theanine depends on the intended use:\u003c\/p\u003e\n\u003cul data-start=\"2752\" data-end=\"3012\"\u003e\n\u003cli data-start=\"2752\" data-end=\"2817\"\u003e\n\u003cp data-start=\"2754\" data-end=\"2817\"\u003e\u003cstrong data-start=\"2754\" data-end=\"2796\"\u003eGeneral relaxation and stress support:\u003c\/strong\u003e 100–200 mg per day\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2818\" data-end=\"2926\"\u003e\n\u003cp data-start=\"2820\" data-end=\"2926\"\u003e\u003cstrong data-start=\"2820\" data-end=\"2878\"\u003eFocus and cognitive performance (often with caffeine):\u003c\/strong\u003e 100–200 mg taken alongside 50–100 mg caffeine\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2927\" data-end=\"3012\"\u003e\n\u003cp data-start=\"2929\" data-end=\"3012\"\u003e\u003cstrong data-start=\"2929\" data-end=\"2964\"\u003eSleep and nighttime relaxation:\u003c\/strong\u003e 200–400 mg taken 30–60 minutes before bedtime\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3014\" data-end=\"3199\"\u003eL-theanine can be taken once daily or split into multiple doses. It is water-soluble and can be taken with or without food. Most people notice effects within 30–60 minutes of ingestion.\u003c\/p\u003e\n\u003ch3 data-start=\"3201\" data-end=\"3232\"\u003eSafety and Considerations\u003c\/h3\u003e\n\u003cp data-start=\"3233\" data-end=\"3519\"\u003eL-theanine is considered very safe, with no known risk of dependence or tolerance. It is generally well tolerated even at higher doses. Individuals who are pregnant, breastfeeding, or taking blood pressure or psychoactive medications should consult a healthcare professional before use.\u003c\/p\u003e\n\u003ch3 data-start=\"3521\" data-end=\"3534\"\u003eSummary\u003c\/h3\u003e\n\u003cp data-start=\"3535\" data-end=\"3787\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eL-theanine is a versatile, research-backed amino acid that promotes calm focus, reduces stress, enhances cognitive performance, and supports restful sleep—making it an excellent option for daily mental wellness without unwanted sedation or stimulation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/article\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/main\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Jarvis Nutrition","offers":[{"title":"$69.00","offer_id":44041548038227,"sku":null,"price":69.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0685\/8355\/5155\/files\/Yographtext-2026-02-05T233050.605.png?v=1770363064","url":"https:\/\/jarvisnutrition.com\/products\/l-theanine","provider":"Jarvis Nutrition","version":"1.0","type":"link"}