{"product_id":"io-genix-pure-tyrosine","title":"IO Genix Pure Tyrosine - Premium Dopamine Precursor","description":"\u003ch2\u003eWhat is IO Genix Pure Tyrosine?\u003c\/h2\u003e\n\u003cp\u003eIO Genix Pure Tyrosine is a single-ingredient L-tyrosine powder. \u003cstrong\u003eA 1 g serving delivers 1,000 mg of L-tyrosine at a purity above 99%\u003c\/strong\u003e, with no flavouring, no sweetener and no bulking agent. The tub holds 240 servings, which is more than six months at one serving a day.\u003c\/p\u003e\n\u003cp\u003eTyrosine is a non-essential amino acid: the body can make it itself, from another amino acid, phenylalanine. Diet supplies it in abundance, through dairy products, meat, fish, eggs, soya and nuts. Cheese is in fact its most emblematic source — the name comes from the Greek \u003cem\u003etyros\u003c\/em\u003e, meaning cheese.\u003c\/p\u003e\n\u003cp\u003eIts biochemical role is well established: \u003cstrong\u003etyrosine is the starting point for the synthesis of catecholamines\u003c\/strong\u003e, a family of nervous-system messengers. That is a point of biochemistry, documented and uncontested; what supplementation actually produces in an adult is another question, and we come back to it below. The powder is produced by fermentation from plant-based substrates. The rest of the Spanish range can be found in our \u003ca href=\"\/en\/collections\/gammes-io-genix\"\u003eIO Genix\u003c\/a\u003e section.\u003c\/p\u003e\n\n\u003ch2\u003eWhat does a serving of Pure Tyrosine contain?\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eValues\u003c\/th\u003e\n\u003cth\u003ePer 1 g serving\u003c\/th\u003e\n\u003cth\u003ePer 2 g (maximum dose)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eL-tyrosine\u003c\/td\u003e\n\u003ctd\u003e1,000 mg\u003c\/td\u003e\n\u003ctd\u003e2,000 mg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnergy\u003c\/td\u003e\n\u003ctd\u003e17 kJ \/ 4 kcal\u003c\/td\u003e\n\u003ctd\u003e8 kcal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtein\u003c\/td\u003e\n\u003ctd\u003e1 g\u003c\/td\u003e\n\u003ctd\u003e2 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarbohydrate\u003c\/td\u003e\n\u003ctd\u003e0 g\u003c\/td\u003e\n\u003ctd\u003e0 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFat\u003c\/td\u003e\n\u003ctd\u003e0 g\u003c\/td\u003e\n\u003ctd\u003e0 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDietary fibre\u003c\/td\u003e\n\u003ctd\u003e0 g\u003c\/td\u003e\n\u003ctd\u003e0 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSalt\u003c\/td\u003e\n\u003ctd\u003e0 g\u003c\/td\u003e\n\u003ctd\u003e0 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSodium\u003c\/td\u003e\n\u003ctd\u003e0 mg\u003c\/td\u003e\n\u003ctd\u003e0 mg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack size\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e240 servings of 1 g, measuring scoop included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eA purity above 99% and 240 servings in a tub: these are the two figures that define this product.\u003c\/strong\u003e The first means there is practically nothing in there but the amino acid — no bulking agent, no sweetener, no colouring. The second is remarkable: at one serving a day, a tub lasts more than six months; at the maximum dose of 2 g, it still lasts four months.\u003c\/p\u003e\n\u003cp\u003eThe powder is produced by \u003cstrong\u003ebiofermentation from plant-based substrates\u003c\/strong\u003e, which makes it suitable for vegetarian and vegan diets. That is a welcome exception in a category largely dominated by gelatine capsules. Its taste is neutral and it dissolves easily in cold water.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOn the regulatory side, let us be clear: no health claim is authorised in Europe for L-tyrosine.\u003c\/strong\u003e Not for concentration, not for alertness, not for mood, not for performance, not for the thyroid. Tyrosine's role as a precursor of catecholamines is a point of biochemistry; what oral supplementation produces in a healthy adult has no dossier approved at European level. So we describe the molecule, its dosage and its precautions, and promise nothing.\u003c\/p\u003e\n\u003cp\u003eOne statement from the old product page has also been removed: it announced a \u003cstrong\u003equantified improvement in bioavailability when taken on an empty stomach\u003c\/strong\u003e. That percentage could not be sourced and it has no place here. The principle of taking it away from protein-rich meals still holds, and we explain it below — without any invented figure.\u003c\/p\u003e\n\n\u003ch4\u003eIngredients list\u003c\/h4\u003e\n\u003cp\u003ePure L-tyrosine (100%, levorotatory form), produced by fermentation from plant-based substrates. Purity above 99%. No bulking agent, no sweetener, no colouring, no preservative. Suitable for vegetarian and vegan diets.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMay contain traces of GLUTEN (wheat, oats), EGGS, MILK and SOYA.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch2\u003eHow do you take Pure Tyrosine?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eServing:\u003c\/strong\u003e 1 g, that is one measuring scoop. \u003cstrong\u003eLiquid:\u003c\/strong\u003e 200 ml of cold water. \u003cstrong\u003eTiming:\u003c\/strong\u003e in the morning on an empty stomach, 30 minutes before breakfast. \u003cstrong\u003eFrequency:\u003c\/strong\u003e one to two servings a day, at least six hours apart, without exceeding 2 g. \u003cstrong\u003eDuration:\u003c\/strong\u003e cycles of 8 to 12 weeks, with a 2 to 4 week break.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTaking it away from protein-rich meals is not a whim, and the mechanism is well understood.\u003c\/strong\u003e To cross the blood-brain barrier, tyrosine uses a transporter it shares with several other amino acids — the same ones found in a steak or a shake. Taken at the same time as a protein intake, it therefore ends up in direct competition with them. The morning, on an empty stomach, is the slot that solves the problem.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe second instruction is more imperative still: do not take the product after 16:00.\u003c\/strong\u003e The manufacturer states this explicitly, and for a common-sense reason: tyrosine can cause restlessness or insomnia in sensitive individuals. An ingredient from the wakefulness-precursor family is taken in the morning, not in the evening.\u003c\/p\u003e\n\u003cp\u003eIf you want to add a second serving, leave at least six hours between them and stay under 2 g a day in total. Start with 1 g for a week before going higher: that is the only way to assess your tolerance without ending up with an unexplained headache.\u003c\/p\u003e\n\u003cp\u003eThe powder dissolves easily in 200 ml of cold water and its taste is neutral. The manufacturer recommends cycles of 8 to 12 weeks with a 2 to 4 week break — so a 240-serving tub comfortably covers several full cycles.\u003c\/p\u003e\n\u003cp\u003eIt combines without overlap with a \u003ca href=\"\/en\/collections\/taurine\"\u003etaurine\u003c\/a\u003e, \u003ca href=\"\/en\/collections\/citrulline\"\u003ecitrulline\u003c\/a\u003e or \u003ca href=\"\/en\/collections\/beta-alanine\"\u003ebeta-alanine\u003c\/a\u003e powder. Do watch out, however, for stacking it with caffeinated \u003ca href=\"\/en\/collections\/boosters\"\u003eboosters\u003c\/a\u003e: many already contain tyrosine, often without making a point of it.\u003c\/p\u003e\n\n\u003ch2\u003eWho is tyrosine for, and who is it not for?\u003c\/h2\u003e\n\u003cp\u003eIt appeals to the adult who builds their own routine, ingredient by ingredient, and who prefers a single active at a known dose to an opaque blend. The 240-serving format also makes it one of the longest-lasting products in the catalogue.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOne contraindication here is absolute, and it must be read before any other: phenylketonuria.\u003c\/strong\u003e People with this metabolic disorder, along with those allergic to phenylalanine, must not consume this product. This is not a routine precaution, it is a formal exclusion stated by the manufacturer.\u003c\/p\u003e\n\u003cp\u003eThe product is also \u003cstrong\u003enot recommended in cases of hyperthyroidism or cardiovascular disorders\u003c\/strong\u003e. The manufacturer requires medical advice \u003cstrong\u003efor anyone treated with MAOI or tricyclic antidepressants\u003c\/strong\u003e, and asks that you \u003cstrong\u003eavoid combining it with dopaminergic medication\u003c\/strong\u003e without medical advice. It further notes that tyrosine may potentiate the effects of thyroid treatments and stimulants. These warnings are serious and specific: if you are on any medication at all, the question goes to your doctor or your pharmacist before you buy.\u003c\/p\u003e\n\u003cp\u003eIt is \u003cstrong\u003enot recommended for children under 12\u003c\/strong\u003e, and \u003cstrong\u003epregnant and breastfeeding women\u003c\/strong\u003e should consult a doctor. The manufacturer lists headaches, nausea, restlessness and insomnia if taken late in the day as possible effects, and recommends starting with low doses.\u003c\/p\u003e\n\u003cp\u003eWhat not to expect from it: this is neither a stimulant, nor a treatment, nor a sports performance product. You will not find the effect of a coffee here. Nor is it a solution to persistent fatigue, to a lack of motivation or to entrenched difficulties with concentration: those situations have causes — sleep, workload, state of health — that are a matter for a doctor and not for a powder.\u003c\/p\u003e\n\n\u003ch2\u003eTyrosine or a caffeine-free booster?\u003c\/h2\u003e\n\u003cp\u003eThe two overlap among people looking for something other than a classic stimulant, and they do not work in the same way.\u003c\/p\u003e\n\u003cp\u003eA \u003ca href=\"\/en\/collections\/booster-sans-cafeine\"\u003ecaffeine-free booster\u003c\/a\u003e is a complete formula, generally built around citrulline and ingredients acting on blood flow, sometimes with tyrosine among them. It is the simplest choice if you want a ready-to-use product for the session, with nothing to put together yourself.\u003c\/p\u003e\n\u003cp\u003eTyrosine on its own answers a different logic: a single amino acid, at a known dose, that you place wherever you like in the day — and in the morning in particular, entirely outside any training context. It costs far less per gram and gives you total control over what you take.\u003c\/p\u003e\n\u003cp\u003eWatch out for doubling up, which is the real practical question here: \u003cstrong\u003emany pre-workouts already contain tyrosine\u003c\/strong\u003e, sometimes at comparable doses. If you use a full \u003ca href=\"\/en\/collections\/pre-workout-sans-creatine\"\u003epre-workout\u003c\/a\u003e, read its label again before adding this tub, or you may exceed the 2 g daily limit without realising it.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eHow many servings are there in a tub?\u003c\/h3\u003e\n\u003cp\u003e240 servings of 1 g, with a measuring scoop included. At one serving a day that comes to more than six months; at the maximum dose of 2 g a day, around four months. It is by far the longest-lasting pack size in this range.\u003c\/p\u003e\n\u003ch3\u003eWhy take it on an empty stomach?\u003c\/h3\u003e\n\u003cp\u003eBecause tyrosine shares its transporter with other amino acids: taken at the same time as a protein-rich meal or a shake, it competes directly with them. The morning, on an empty stomach, 30 minutes before breakfast, avoids the problem.\u003c\/p\u003e\n\u003ch3\u003eWhy not take it in the evening?\u003c\/h3\u003e\n\u003cp\u003eThe manufacturer asks that you avoid taking it after 16:00, because of the risk of restlessness or insomnia in sensitive individuals. That instruction is consistent with the nature of this amino acid: its place is the morning.\u003c\/p\u003e\n\u003ch3\u003eWho must absolutely not take it?\u003c\/h3\u003e\n\u003cp\u003ePeople with phenylketonuria and those allergic to phenylalanine: that is a formal exclusion. The product is also not recommended in cases of hyperthyroidism or cardiovascular disorders, and requires medical advice alongside MAOI or tricyclic antidepressants.\u003c\/p\u003e\n\u003ch3\u003eIs it suitable for vegans?\u003c\/h3\u003e\n\u003cp\u003eYes. The tyrosine is produced by fermentation from plant-based substrates, the powder has no animal casing and the manufacturer declares it suitable for vegetarian and vegan diets. Traces of milk and eggs remain possible because of the production facility.\u003c\/p\u003e\n\u003ch3\u003eDoes it have a taste?\u003c\/h3\u003e\n\u003cp\u003eThe manufacturer describes it as neutral, and the powder dissolves easily in 200 ml of cold water. That is a real advantage over many powdered amino acids, whose bitterness forces you to mask the taste in a juice.\u003c\/p\u003e\n\u003ch3\u003eCan it be stacked with a pre-workout?\u003c\/h3\u003e\n\u003cp\u003eCheck your pre-workout's label first: many already contain tyrosine, sometimes at several hundred milligrams. Stacking them can take you over the 2 g daily limit without your noticing. Adjust the powder dose accordingly.\u003c\/p\u003e\n\n\u003ch2\u003eWhere can you buy IO Genix Pure Tyrosine?\u003c\/h2\u003e\n\u003cp\u003eThe 240-serving tub can be ordered from this page, and we ship throughout France and Europe. At the Vendargues shop, about ten minutes from Montpellier, this is a product we ask two questions about before selling it: “are you on any medication?” and “does your pre-workout already contain some?”. The two answers often decide for the customer. The rest of the section can be browsed in our \u003ca href=\"\/en\/collections\/nutrition-sportive\"\u003esports nutrition\u003c\/a\u003e range.\u003c\/p\u003e","brand":"IO.GENIX","offers":[{"title":"Default Title","offer_id":51160709693767,"sku":"8435569310710","price":21.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/9467\/9111\/files\/IO-Genix-Pure-Tyrosine-Precurseur-Dopamine-Premium-carre.png?v=1788601811","url":"https:\/\/kissnutrition.fr\/en\/products\/io-genix-pure-tyrosine","provider":"KISS NUTRITION","version":"1.0","type":"link"}