{"product_id":"l-tyrosine-free-form-fermentation-derived","title":"L-Tyrosine — Free-Form, Fermentation-Derived","description":"\u003cdiv style=\"border: 1px solid #B99A5B; background: #FBF8F1; padding: 14px 18px; border-radius: 10px; margin-bottom: 18px;\"\u003e\n  \u003cp style=\"margin: 0 0 8px;\"\u003e\u003cstrong\u003ePre-orders are live.\u003c\/strong\u003e Your $100 USD payment creates a physical pre-order for this product and is applied to its final declared price. At $100 or less, we refund any unused amount automatically and ship when ready. Above $100, we email only for the balance.\u003c\/p\u003e\n  \u003cp style=\"margin: 0;\"\u003e\u003cstrong\u003eCampaign milestone:\u003c\/strong\u003e 1,000 units for this product. Orders may continue beyond the milestone; it is a production target, not an inventory cap.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"font-size: 1.08em;\"\u003e\u003cstrong\u003eFree-form L-tyrosine, presented without daily-stimulant promises.\u003c\/strong\u003e Each capsule provides 500 mg of fermentation-derived L-tyrosine. Free-form L-tyrosine is the form used in most human research; that does not mean one capsule reproduces the much larger doses used in many acute-stress studies.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1e3a2f; margin-bottom: 8px;\"\u003eAt a glance\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 0 0 22px; font-size: 0.95em;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding: 10px 14px; border: 1px solid #E5DCC8; background: #FBF8F1; color: #1e3a2f; text-align: left; vertical-align: top; width: 38%;\"\u003eActive ingredient\u003c\/th\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E5DCC8; vertical-align: top;\"\u003eL-tyrosine\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding: 10px 14px; border: 1px solid #E5DCC8; background: #FBF8F1; color: #1e3a2f; text-align: left; vertical-align: top;\"\u003eStrength\u003c\/th\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E5DCC8; vertical-align: top;\"\u003e500 mg per capsule\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding: 10px 14px; border: 1px solid #E5DCC8; background: #FBF8F1; color: #1e3a2f; text-align: left; vertical-align: top;\"\u003eForm and source\u003c\/th\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E5DCC8; vertical-align: top;\"\u003eFree-form, fermentation-derived; specified to Ph. Eur.\/USP pharma-grade standards\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding: 10px 14px; border: 1px solid #E5DCC8; background: #FBF8F1; color: #1e3a2f; text-align: left; vertical-align: top;\"\u003ePack\u003c\/th\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E5DCC8; vertical-align: top;\"\u003e90 capsules\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding: 10px 14px; border: 1px solid #E5DCC8; background: #FBF8F1; color: #1e3a2f; text-align: left; vertical-align: top;\"\u003ePre-order payment\u003c\/th\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E5DCC8; vertical-align: top;\"\u003e$100 USD, recorded on this physical product order and applied to the final declared price; automatic shipment at $100 or less; balance request only above $100\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding: 10px 14px; border: 1px solid #E5DCC8; background: #FBF8F1; color: #1e3a2f; text-align: left; vertical-align: top;\"\u003eProduct milestone\u003c\/th\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E5DCC8; vertical-align: top;\"\u003e1,000 units; pre-orders can continue after the target is reached\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"color: #1e3a2f; margin-bottom: 8px;\"\u003eSourcing and quality\u003c\/h3\u003e\n\u003cp\u003eThe public specification is fermentation-derived, free-form L-tyrosine meeting Ph. Eur.\/USP pharma-grade standards. The finished production lot will be third-party tested and its lot-level Certificate of Analysis published before shipment. The final label and finished-lot COA are still pending, so excipients and other release details should be taken from those documents rather than assumed.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1e3a2f; margin-bottom: 8px;\"\u003eWhat the evidence does—and does not—say\u003c\/h3\u003e\n\u003cp\u003eHuman evidence is moderate for preserving some cognitive performance during unusual acute stress, including sleep deprivation and cold exposure. Many positive studies used 100–150 mg\/kg—far more than a single 500 mg capsule—and smaller doses have weaker or mixed support. Evidence does not justify claims for routine daily motivation, ADHD, depression, thyroid support, or reliable exercise improvement. This product is not presented as a treatment for any condition.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1e3a2f; margin-bottom: 8px;\"\u003eSide effects and interactions\u003c\/h3\u003e\n\u003cp\u003ePossible effects include nausea or other stomach upset, headache, heartburn, jitteriness, anxiety, irritability, insomnia, palpitations, or changes in blood pressure. Do not combine L-tyrosine with monoamine oxidase inhibitors (MAOIs). Obtain prescriber approval before use with levodopa or other Parkinson’s medicines, thyroid medicines, prescription stimulants, decongestants, psychiatric medicines, high-dose caffeine, or other catecholamine-raising products. Avoid unsupervised use with hyperthyroidism, uncontrolled hypertension, significant anxiety or mania risk, during pregnancy or breastfeeding, or in phenylketonuria care.\u003c\/p\u003e\n\n\u003cdiv style=\"border-left: 3px solid #B99A5B; background: #FBF8F1; padding: 12px 16px; margin: 20px 0;\"\u003e\n  \u003cp style=\"margin: 0;\"\u003e\u003cstrong\u003eSafety notice:\u003c\/strong\u003e This is a dietary supplement, not a medicine. It is not intended to diagnose, treat, cure, or prevent disease. Do not start, stop, or change a prescribed medicine based on this page. Follow the final product label and consult a qualified healthcare professional when appropriate.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/purecityresearch.org\/l-tyrosine\/\" target=\"_blank\" rel=\"noopener\"\u003eRead the full independent Pure City Research review of L-tyrosine →\u003c\/a\u003e\u003c\/p\u003e\n","brand":"Pure City","offers":[{"title":"Default Title","offer_id":48084336640165,"sku":"PC-TYR-500-90","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/8674\/2949\/files\/pure-city-l-tyrosine.jpg?v=1785839176","url":"https:\/\/purecity.shop\/products\/l-tyrosine-free-form-fermentation-derived","provider":"Pure City Shop","version":"1.0","type":"link"}