{"id":3210,"date":"2025-06-20T18:23:36","date_gmt":"2025-06-20T22:23:36","guid":{"rendered":"https:\/\/herbasimple.com\/blog\/?p=3210"},"modified":"2025-10-30T11:41:08","modified_gmt":"2025-10-30T15:41:08","slug":"la-quercetine-qui-calme-les-allergies","status":"publish","type":"post","link":"https:\/\/herbasimple.com\/blog\/la-quercetine-qui-calme-les-allergies\/","title":{"rendered":"La querc\u00e9tine qui calme les allergies"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Les allergies saisonni\u00e8res touchent de plus en plus de gens, et on cite souvent <strong>la querc\u00e9tine qui calme les allergies<\/strong>. J\u2019ai pr\u00e9par\u00e9 un dossier complet pour vous expliquer ce qu\u2019est la querc\u00e9tine, d\u2019o\u00f9 elle vient, et comment elle agit. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Naturellement pr\u00e9sente dans plusieurs plantes m\u00e9dicinales et aliments, cette mol\u00e9cule est aussi reconnue comme <strong>tonique veineux<\/strong> et <strong>anti-inflammatoire<\/strong>. Mais comment est-elle transform\u00e9e en suppl\u00e9ment ? Peut-on en profiter sans prendre des comprim\u00e9s ? Et existe-t-il des synergies qui permettent d\u2019en tirer le meilleur effet avec des doses plus faibles ? C\u2019est ce que je vous propose de d\u00e9couvrir dans ce <strong>portrait clair et pratique de la querc\u00e9tine<\/strong>, sous toutes ses formes.<\/p>\n\n\n\t\t\t\t<div class=\"wp-block-uagb-table-of-contents uagb-toc__align-left uagb-toc__columns-1  uagb-block-fd04a449      \"\n\t\t\t\t\tdata-scroll= \"1\"\n\t\t\t\t\tdata-offset= \"30\"\n\t\t\t\t\tstyle=\"\"\n\t\t\t\t>\n\t\t\t\t<div class=\"uagb-toc__wrap\">\n\t\t\t\t\t\t<div class=\"uagb-toc__title\">\n\t\t\t\t\t\t\tTable des mati\u00e8res\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"uagb-toc__list-wrap \">\n\t\t\t\t\t\t<ol class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#la-mol\u00e9cule-de-querc\u00e9tine\" class=\"uagb-toc-link__trigger\">La mol\u00e9cule de querc\u00e9tine<\/a><ul class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#propri\u00e9t\u00e9s-de-la-querc\u00e9tine-qui-calme-les-allergies\" class=\"uagb-toc-link__trigger\">Propri\u00e9t\u00e9s de la querc\u00e9tine qui calme les allergies<\/a><li class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#les-synergies-qui-am\u00e9liorent-son-effet-antihistaminique\" class=\"uagb-toc-link__trigger\">Les synergies qui am\u00e9liorent son effet antihistaminique<\/a><\/li><\/ul><\/li><li class=\"uagb-toc__list\"><a href=\"#aliments-et-plantes-riches-en-querc\u00e9tine\" class=\"uagb-toc-link__trigger\">Aliments et plantes riches en querc\u00e9tine<\/a><ul class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#exemples-de-consommations\" class=\"uagb-toc-link__trigger\">Exemples de consommations \ud83e\uddc5\ud83c\udf4e\ud83c\udf47\ud83c\udf3f<\/a><li class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#quelle-quantit\u00e9-de-querc\u00e9tine-devrait-on-consommer\" class=\"uagb-toc-link__trigger\">Quelle quantit\u00e9 de querc\u00e9tine devrait-on consommer ?<\/a><\/li><\/ul><\/li><\/ul><\/li><li class=\"uagb-toc__list\"><a href=\"#la-querc\u00e9tine-en-suppl\u00e9ments-pour-calmer-les-allergies\" class=\"uagb-toc-link__trigger\">La querc\u00e9tine en suppl\u00e9ments pour calmer les allergies<\/a><ul class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#do\u00f9-vient-la-querc\u00e9tine-dans-les-suppl\u00e9ments\" class=\"uagb-toc-link__trigger\">D\u2019o\u00f9 vient la querc\u00e9tine dans les suppl\u00e9ments ?<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><li class=\"uagb-toc__list\"><a href=\"#formation-compl\u00e8te-sur-les-allergies-saisonni\u00e8res\" class=\"uagb-toc-link__trigger\">Formation compl\u00e8te sur les allergies saisonni\u00e8res<\/a><li class=\"uagb-toc__list\"><a href=\"#et-vous\" class=\"uagb-toc-link__trigger\">\ud83d\udc47 Et vous ?<\/a><li class=\"uagb-toc__list\"><a href=\"#r\u00e9f\u00e9rences\" class=\"uagb-toc-link__trigger\">R\u00e9f\u00e9rences<\/a><\/ul><\/ul><\/ul><\/ol>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\n\n\n<h2 class=\"wp-block-heading\">La mol\u00e9cule de querc\u00e9tine <\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La querc\u00e9tine une mol\u00e9cule de la grande famille des polyph\u00e9nols, un <strong>flavono\u00efde<\/strong> du groupe des <strong>flavonols<\/strong>.  On la retrouve naturellement dans de nombreux fruits, l\u00e9gumes et plantes m\u00e9dicinales. En nutrition, on la classe parmi les <strong>bioflavono\u00efdes<\/strong>, un terme populaire qui d\u00e9signe des <strong>flavono\u00efdes<\/strong> <strong>antioxydants ayant une action protectrice sur les vaisseaux sanguins et les capillaires<\/strong>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"238\" height=\"138\" data-src=\"https:\/\/i0.wp.com\/herbasimple.com\/blog\/wp-content\/uploads\/2025\/06\/Quercetine-2024_10_30-14_17_00-UTC.gif?resize=238%2C138&#038;ssl=1\" alt=\"Mol\u00e9cule de querc\u00e9tine\" class=\"wp-image-3230 lazyload\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 238px; --smush-placeholder-aspect-ratio: 238\/138;\" \/><figcaption class=\"wp-element-caption\">Mol\u00e9cule de querc\u00e9tine<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Dans les plantes, la querc\u00e9tine est rarement sous cette forme \u00ab pure \u00bb (appel\u00e9e <strong>aglycone<\/strong>). Elle est presque toujours <strong>li\u00e9e \u00e0 un glucide<\/strong>, formant ce qu\u2019on appelle un <strong>h\u00e9t\u00e9roside<\/strong>. Les h\u00e9t\u00e9rosides portent des noms diff\u00e9rents selon le sucre auquel la querc\u00e9tine est attach\u00e9e :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Rutine<\/strong> (querc\u00e9tine + rhamnose + glucose)<\/li>\n\n\n\n<li><strong>Isoquercitrine<\/strong> <strong>ou isoquerc\u00e9troside<\/strong> (querc\u00e9tine + glucose)<\/li>\n\n\n\n<li><strong>Hyp\u00e9roside<\/strong> (querc\u00e9tine + galactose)<\/li>\n\n\n\n<li><strong>Quercitrine<\/strong> <strong>ou querc\u00e9troside<\/strong> (querc\u00e9tine + rhamnose)<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-medium\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"300\" height=\"283\" data-src=\"https:\/\/i0.wp.com\/herbasimple.com\/blog\/wp-content\/uploads\/2025\/06\/molecule-de-Rutine-.png?resize=300%2C283&#038;ssl=1\" alt=\"Mol\u00e9cule de rutine, h\u00e9t\u00e9roside de querc\u00e9tine\" class=\"wp-image-3229 lazyload\" data-srcset=\"https:\/\/i0.wp.com\/herbasimple.com\/blog\/wp-content\/uploads\/2025\/06\/molecule-de-Rutine-.png?resize=300%2C283&amp;ssl=1 300w, https:\/\/i0.wp.com\/herbasimple.com\/blog\/wp-content\/uploads\/2025\/06\/molecule-de-Rutine-.png?resize=768%2C725&amp;ssl=1 768w, https:\/\/i0.wp.com\/herbasimple.com\/blog\/wp-content\/uploads\/2025\/06\/molecule-de-Rutine-.png?w=880&amp;ssl=1 880w\" data-sizes=\"(max-width: 300px) 100vw, 300px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 300px; --smush-placeholder-aspect-ratio: 300\/283;\" \/><figcaption class=\"wp-element-caption\">Mol\u00e9cule de rutine, h\u00e9t\u00e9roside de querc\u00e9tine<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">M\u00eame si leurs noms changent, <strong>tous ces h\u00e9t\u00e9rosides sont finalement transform\u00e9s en querc\u00e9tine pendant la digestion. <\/strong>Dans l\u2019intestin, les enzymes digestives et certaines bact\u00e9ries du microbiote vont couper le lien entre la querc\u00e9tine et le glucide, ce qui lib\u00e8re la querc\u00e9tine \u201cpure\u201d.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Dans les <strong>aliments et les plantes<\/strong>, la querc\u00e9tine est presque toujours sous forme d\u2019h\u00e9t\u00e9rosides \u2014 et ils sont <strong>mieux absorb\u00e9s que la querc\u00e9tine pure<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Propri\u00e9t\u00e9s de la querc\u00e9tine qui calme les allergies<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Lors des allergies saisonni\u00e8res, c\u2019est surtout pour son <strong>effet antihistaminique naturel<\/strong> que la querc\u00e9tine est int\u00e9ressante.<br>Elle agit en <strong>calmant les mastocytes<\/strong>, ces cellules du syst\u00e8me immunitaire qui lib\u00e8rent l\u2019histamine \u2014 la mol\u00e9cule responsable des sympt\u00f4mes comme le nez qui coule, les yeux qui piquent, les \u00e9ternuements ou les d\u00e9mangeaisons.<br>En rendant ces cellules <strong>moins sensibles et moins r\u00e9actives<\/strong>, la querc\u00e9tine aide \u00e0 <strong>pr\u00e9venir la lib\u00e9ration d\u2019histamine<\/strong>, ce qui <strong>diminue les r\u00e9actions allergiques<\/strong> avant m\u00eame qu\u2019elles ne s\u2019installent ! \ud83d\udc4d<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Les synergies qui am\u00e9liorent son effet antihistaminique<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Certaines substances naturelles peuvent <strong>amplifier l\u2019efficacit\u00e9<\/strong> de la querc\u00e9tine et am\u00e9liorer son absorption:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Vitamine C<\/strong> :<br>Aide \u00e0 stabiliser les mastocytes et <strong>renforce l\u2019effet antihistaminique<\/strong> de la querc\u00e9tine.<br>La combinaison des deux est particuli\u00e8rement int\u00e9ressante en p\u00e9riode d\u2019allergies.<\/li>\n\n\n\n<li><strong>Brom\u00e9la\u00efne<\/strong> (enzyme issue de l\u2019ananas) :<br>Am\u00e9liore l\u2019<strong>absorption de la querc\u00e9tine sous forme aglycone<\/strong>, qu\u2019on retrouve dans certains suppl\u00e9ments.<br>En revanche, <strong>elle n\u2019est pas n\u00e9cessaire<\/strong> si la querc\u00e9tine provient d\u2019aliments ou de plantes, car elle s\u2019y trouve sous forme d&rsquo;<strong>h\u00e9t\u00e9roside (li\u00e9e \u00e0 un sucre)<\/strong>, une forme <strong>beaucoup mieux assimil\u00e9e<\/strong> par l\u2019organisme.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Aliments et plantes riches en querc\u00e9tine<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sources alimentaires et herbales de querc\u00e9tine et ses h\u00e9t\u00e9rosides :<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Aliment ou plante m\u00e9dicinale<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Teneur estim\u00e9e (mg\/100 g)<\/strong><\/td><\/tr><tr><td>C\u00e2pres crues<\/td><td class=\"has-text-align-center\" data-align=\"center\">180\u2013230 mg<\/td><\/tr><tr><td>Ginkgo biloba &#8211; Feuilles s\u00e9ch\u00e9es<\/td><td class=\"has-text-align-center\" data-align=\"center\">100 mg<\/td><\/tr><tr><td>Oignon rouge cru<\/td><td class=\"has-text-align-center\" data-align=\"center\">20\u201350 mg<\/td><\/tr><tr><td>Ortie (Urtica dioica) &#8211; Feuilles s\u00e9ch\u00e9es<\/td><td class=\"has-text-align-center\" data-align=\"center\">20\u201340 mg<\/td><\/tr><tr><td>Sureau (Sambucus nigra) &#8211; baies crues<\/td><td class=\"has-text-align-center\" data-align=\"center\">25\u201330 mg<\/td><\/tr><tr><td>Achill\u00e9e millefeuille &#8211; Sommit\u00e9s fleuries s\u00e9ch\u00e9es<\/td><td class=\"has-text-align-center\" data-align=\"center\">15\u201330 mg<\/td><\/tr><tr><td>Oignon jaune cru<\/td><td class=\"has-text-align-center\" data-align=\"center\">10\u201330 mg<\/td><\/tr><tr><td>Canneberges<\/td><td class=\"has-text-align-center\" data-align=\"center\">15\u201317 mg<\/td><\/tr><tr><td>Aub\u00e9pine (Crataegus sp.) &#8211; Fleurs, feuilles s\u00e9ch\u00e9es<\/td><td class=\"has-text-align-center\" data-align=\"center\">10\u201320 mg<\/td><\/tr><tr><td>Camomille allemande &#8211; Fleurs s\u00e9ch\u00e9es<\/td><td class=\"has-text-align-center\" data-align=\"center\">5\u201315 mg<\/td><\/tr><tr><td>Tilleul (Tilia sp.) &#8211; Bract\u00e9es<\/td><td class=\"has-text-align-center\" data-align=\"center\">5\u201310 mg<\/td><\/tr><tr><td>Pomme avec pelure<\/td><td class=\"has-text-align-center\" data-align=\"center\">2\u20135 mg<\/td><\/tr><tr><td>Raisin rouge<\/td><td class=\"has-text-align-center\" data-align=\"center\">2\u20133 mg<\/td><\/tr><tr><td>Brocoli cuit<\/td><td class=\"has-text-align-center\" data-align=\"center\">2\u20133 mg<\/td><\/tr><tr><td>Bleuet frais<\/td><td class=\"has-text-align-center\" data-align=\"center\">1-3 mg<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img data-recalc-dims=\"1\" decoding=\"async\" data-src=\"https:\/\/i0.wp.com\/herbasimple.com\/blog\/wp-content\/uploads\/2025\/06\/Aliments-riches-en-quercetine.png?w=640&#038;ssl=1\" alt=\"aliments riches en querc\u00e9tine pour calmer les allergies saisonni\u00e8res\" class=\"wp-image-3225 lazyload\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd0d <strong>Remarques :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>La querc\u00e9tine est particuli\u00e8rement concentr\u00e9e dans la <strong>pelure<\/strong> de certains fruits et l\u00e9gumes, comme les <strong>oignons<\/strong> et les <strong>pommes<\/strong>.<\/li>\n\n\n\n<li>La <strong>cuisson<\/strong> peut <strong>diminuer la teneur en querc\u00e9tine<\/strong> dans certains aliments. Par contre, dans le cas des <strong>brassicac\u00e9es<\/strong> (comme le brocoli), elle <strong>am\u00e9liore sa biodisponibilit\u00e9<\/strong>.<\/li>\n\n\n\n<li>Les <strong>valeurs indiqu\u00e9es sont approximatives<\/strong>. Elles peuvent varier avec les <strong>conditions de culture<\/strong>, <strong>vari\u00e9t\u00e9<\/strong>, le <strong>stade de r\u00e9colte<\/strong>, la <strong>saison<\/strong>, et la <strong>m\u00e9thode de s\u00e9chage<\/strong> dans le cas des plantes m\u00e9dicinales.<\/li>\n\n\n\n<li>Les v\u00e9g\u00e9taux issus de la <strong>culture biologique<\/strong> <strong>et la cueillette sauvage ont toujours une teneur en polyph\u00e9nols<\/strong> plus \u00e9lev\u00e9e.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Exemples de consommations<\/strong> \ud83e\uddc5\ud83c\udf4e\ud83c\udf47\ud83c\udf3f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Une portion de <strong>c\u00e2pres<\/strong> (30 g) \u2192 jusqu\u2019\u00e0 <strong>70 mg de querc\u00e9tine <\/strong><\/li>\n\n\n\n<li>Une portion d\u2019<strong>oignons rouges<\/strong> (50 g) \u2192 environ <strong>20 mg<\/strong><\/li>\n\n\n\n<li>Une <strong>pomme avec pelure<\/strong> \u2192 4 \u00e0 5 mg de querc\u00e9tine<\/li>\n\n\n\n<li>12 g (environ 60 ml)<strong> d\u2019ortie s\u00e9ch\u00e9e<\/strong> \u2192 environ <strong>5 mg<\/strong> de querc\u00e9tine + autres flavono\u00efdes<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Quelle quantit\u00e9 de querc\u00e9tine devrait-on consommer ?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Il n\u2019existe pas de recommandations officielles concernant l\u2019apport quotidien en querc\u00e9tine.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cela dit, on sait que l\u2019apport alimentaire moyen se situe entre <strong>10 et 40 mg par jour<\/strong> en Europe et en Am\u00e9rique du Nord \u2014 une quantit\u00e9 g\u00e9n\u00e9ralement suffisante pour <strong>soutenir le syst\u00e8me immunitaire et cardiovasculaire<\/strong> au quotidien.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En adoptant une alimentation riche en <strong>v\u00e9g\u00e9taux color\u00e9s<\/strong>, <strong>oignons<\/strong>, <strong>pommes<\/strong>, <strong>baies<\/strong> et <strong>herbes<\/strong>, on peut facilement atteindre jusqu\u2019\u00e0 <strong>80 mg de querc\u00e9tine par jour<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u261d\ufe0f Toutefois, en p\u00e9riode de <strong>r\u00e9actions allergiques aigu\u00ebs<\/strong>, ces apports alimentaires sont souvent <strong>insuffisants pour produire un effet antihistaminique notable<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Parfois, une <strong>tisane bien concentr\u00e9e d\u2019<a href=\"https:\/\/herbasimple.com\/blog\/phytochimie-et-extraction-des-feuilles-dortie\/\">ortie<\/a><\/strong> peut suffire \u00e0 att\u00e9nuer plusieurs sympt\u00f4mes\u2026 mais dans bien des cas, il faut aller un peu plus loin&#8230;.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"640\" height=\"440\" data-src=\"https:\/\/i0.wp.com\/herbasimple.com\/blog\/wp-content\/uploads\/2024\/02\/infusion-ortie.jpg?resize=640%2C440&#038;ssl=1\" alt=\"Infusion de feuilles d'ortie\" class=\"wp-image-1713 lazyload\" data-srcset=\"https:\/\/i0.wp.com\/herbasimple.com\/blog\/wp-content\/uploads\/2024\/02\/infusion-ortie.jpg?w=640&amp;ssl=1 640w, https:\/\/i0.wp.com\/herbasimple.com\/blog\/wp-content\/uploads\/2024\/02\/infusion-ortie.jpg?resize=300%2C206&amp;ssl=1 300w\" data-sizes=\"(max-width: 640px) 100vw, 640px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 640px; --smush-placeholder-aspect-ratio: 640\/440;\" \/><\/figure>\n<\/div>\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">\ud83d\udc49 <strong>Il n\u2019est pas absolument n\u00e9cessaire d\u2019utiliser des suppl\u00e9ments de querc\u00e9tine pour soulager les allergies. On peut \u00e9galement choisir de combiner plusieurs plantes m\u00e9dicinales bien s\u00e9lectionn\u00e9es \u2014 ayant des principes actifs diff\u00e9rents et compl\u00e9mentaires<\/strong> : <a href=\"https:\/\/herbasimple.com\/blog\/5-plantes-pour-les-allergies-saisonnieres\/\">5 plantes pour les allergies saisonni\u00e8res<\/a>. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">La querc\u00e9tine en suppl\u00e9ments pour calmer les allergies<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Mais en p\u00e9riode de <strong>crise allergique<\/strong>, les suppl\u00e9ments de querc\u00e9tine repr\u00e9sentent une option int\u00e9ressante (mais pas la seule !), car ils permettent d\u2019atteindre des doses th\u00e9rapeutiques difficiles \u00e0 obtenir par l\u2019alimentation seule.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\ud83d\udc8a <strong>Dosage recommand\u00e9 en suppl\u00e9ment :<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>En pr\u00e9vention ou soutien g\u00e9n\u00e9ral<\/strong> : 250 \u00e0 500 mg par jour<\/li>\n\n\n\n<li><strong>En phase aigu\u00eb (allergies actives)<\/strong> : 500 \u00e0 1000 mg par jour, r\u00e9partis en 2 ou 3 prises<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Mais si vous utilisez des produits optimis\u00e9s \u2014 par exemple enrichis en bioflavono\u00efdes, en vitamine C ou sous forme liposomale \u2014 les dosages recommand\u00e9s peuvent \u00eatre plus faibles. \u00c0 dose \u00e9lev\u00e9e, la querc\u00e9tine peut d\u2019ailleurs \u00eatre difficile \u00e0 dig\u00e9rer et \u00e0 assimiler.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">D\u2019o\u00f9 vient la querc\u00e9tine dans les suppl\u00e9ments ?<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Option 1 <\/strong>:  <\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">La querc\u00e9tine de plusieurs suppl\u00e9ments est <strong>extraite des fleurs du sophora du Japon<\/strong> (<em>Sophora japonica<\/em>), une plante naturellement riche en <strong>rutine<\/strong> (h\u00e9t\u00e9roside de querc\u00e9tine).<br>Pour obtenir de la querc\u00e9tine pure, on <strong>extrait d\u2019abord la rutine<\/strong>, puis on la soumet \u00e0 une <strong>hydrolyse acide<\/strong> afin de <strong>s\u00e9parer la querc\u00e9tine de son sucre<\/strong>. Ce proc\u00e9d\u00e9 permet d\u2019obtenir de la <strong>querc\u00e9tine sous forme aglycone<\/strong>, qui est ensuite utilis\u00e9e dans les capsules ou comprim\u00e9s. \ud83d\udc8a<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Option 2<\/strong> : <\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Il existe aussi de la <strong>querc\u00e9tine synth\u00e9tique<\/strong>, produite en laboratoire \ud83d\udc69\u200d\ud83d\udd2c. La synth\u00e8se fait appel \u00e0 plusieurs \u00e9tapes de r\u00e9actions chimiques et des solvants toxiques. Elle est moins utilis\u00e9e dans les produits naturels, mais elle existe. \u2697\ufe0f<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Option 3<\/strong> : <\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Plus r\u00e9cemment, on a d\u00e9velopp\u00e9 une querc\u00e9tine issue de la <strong>biotechnologie<\/strong> (avec des bact\u00e9ries et levures). Ces proc\u00e9d\u00e9s sont \u00e9coresponsables mais plus co\u00fbteux. \u2697\ufe0f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Dans les <strong>options 2 et 3<\/strong>, on obtient de la querc\u00e9tine <strong>isol\u00e9e<\/strong>, sans ses <strong>mol\u00e9cules compagnes<\/strong> naturelles (autres flavono\u00efdes, enzymes, tanins\u2026).<br>Elles n\u2019offrent donc pas la <strong>richesse des synergies<\/strong> que l\u2019on retrouve dans les extraits de plantes enti\u00e8res. On peut ainsi se demander si ces formes <strong>sont aussi int\u00e9ressantes \u00e0 long terme<\/strong> pour le soutient de notre sant\u00e9 !?<\/p>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group has-vivid-red-color has-white-background-color has-text-color has-background has-link-color wp-elements-1\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\">Formation compl\u00e8te sur les allergies saisonni\u00e8res<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Envie d\u2019aller plus loin ? <a href=\"https:\/\/formation.herbasimple.com\/277a633b-10bdeed1\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/formation.herbasimple.com\/277a633b-10bdeed1<\/a><\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udc47 <em>Et vous ?<\/em><\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Avez-vous d\u00e9j\u00e0 test\u00e9 la querc\u00e9tine ou d\u2019autres rem\u00e8des naturels contre les allergies ?<br><strong>Partagez votre exp\u00e9rience en commentaire !<\/strong> Vos questions et besoins m\u2019inspirent \ud83c\udf3c<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">R\u00e9f\u00e9rences<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">&#8211;<strong>USDA Database for the Flavonoid Content of Selected Foods, Release 3.3<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">-Manach et coll. <em>Polyphenols: food sources and bioavailability<\/em>. The American Journal of Clinical Nutrition, 79(5), 2004.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">-Harnly et coll. <em>Flavonoid content of U.S. fruits, vegetables, and nuts<\/em>, 2006.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#8211;<em>Herbal Medicine: Biomolecular and Clinical Aspects<\/em>, 2nd edition (2011), CRC Press<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les allergies saisonni\u00e8res touchent de plus en plus de gens, et on cite souvent la querc\u00e9tine qui calme les allergies.&hellip;<\/p>\n","protected":false},"author":2,"featured_media":3305,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"pagelayer_contact_templates":[],"_pagelayer_content":"","_uag_custom_page_level_css":"","_exactmetrics_skip_tracking":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[587],"tags":[427,421,426,428,51,351,424,425],"class_list":["post-3210","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sante-equilibre-naturel","tag-aliments-riches-en-quercetine","tag-allergies-saisonnieres","tag-antihistaminique-naturel","tag-nutrition-et-immunite","tag-phytochimie","tag-plantes-contre-les-allergies","tag-quercetine","tag-rutine"],"yoast_head":"<!-- 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Mais saviez-vous\u2026","rel":"","context":"Dans &quot;Sant\u00e9 &amp; \u00e9quilibre naturel&quot;","block_context":{"text":"Sant\u00e9 &amp; \u00e9quilibre naturel","link":"https:\/\/herbasimple.com\/blog\/category\/sante-equilibre-naturel\/"},"img":{"alt_text":"Plantes pour allergies saisonni\u00e8res","src":"https:\/\/i0.wp.com\/herbasimple.com\/blog\/wp-content\/uploads\/2025\/04\/Plantespour-allergies.jpg?fit=1024%2C768&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/herbasimple.com\/blog\/wp-content\/uploads\/2025\/04\/Plantespour-allergies.jpg?fit=1024%2C768&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/herbasimple.com\/blog\/wp-content\/uploads\/2025\/04\/Plantespour-allergies.jpg?fit=1024%2C768&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/herbasimple.com\/blog\/wp-content\/uploads\/2025\/04\/Plantespour-allergies.jpg?fit=1024%2C768&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":625,"url":"https:\/\/herbasimple.com\/blog\/phytochimie-et-extraction-des-feuilles-dortie\/","url_meta":{"origin":3210,"position":2},"title":"Phytochimie et extraction des feuilles d&rsquo;ortie","author":"M\u00e9lanie Ricard-Quirion","date":false,"format":false,"excerpt":"L'ortie est une plante tr\u00e8s polyvalente avec de nombreuses utilisations tr\u00e8s diverses. 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