{"id":1215,"date":"2026-09-21T14:02:17","date_gmt":"2026-09-21T13:02:17","guid":{"rendered":"https:\/\/www.nutrixeal.fr\/expertise\/?p=1215"},"modified":"2026-09-21T14:03:39","modified_gmt":"2026-09-21T13:03:39","slug":"collagene-vitamine-c","status":"publish","type":"post","link":"https:\/\/www.nutrixeal.fr\/expertise\/collagene-vitamine-c\/","title":{"rendered":"Collag\u00e8ne et vitamine C&nbsp;: le duo essentiel pour votre peau et vos articulations\u00a0"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Sur les \u00e9tiquettes, le collag\u00e8ne marin arrive presque toujours accompagn\u00e9 de vitamine C. Cette association n&rsquo;a rien d&rsquo;un argument commercial ajout\u00e9 apr\u00e8s coup&nbsp;: elle repose sur un m\u00e9canisme biochimique pr\u00e9cis, qui justifie pleinement cette combinaison. Voici pourquoi.<\/p>\n\n\n\r\n<section class=\"article-callout article-callout--summary panel summary-box\">\r\n\r\n    <div class=\"article-callout__header\">\r\n      <span class=\"article-callout__icon\" aria-hidden=\"true\">\r\n                  <svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\">\r\n            <path d=\"M3.5 10C3.5 6.22876 3.5 4.34315 4.7448 3.17157C5.98959 2 7.99306 2 12 2H12.7727C16.0339 2 17.6645 2 18.7969 2.79784C19.1214 3.02643 19.4094 3.29752 19.6523 3.60289C20.5 4.66867 20.5 6.20336 20.5 9.27273V11.8182C20.5 14.7814 20.5 16.2629 20.0311 17.4462C19.2772 19.3486 17.6829 20.8491 15.6616 21.5586C14.4044 22 12.8302 22 9.68182 22C7.88275 22 6.98322 22 6.26478 21.7478C5.10979 21.3424 4.19875 20.4849 3.76796 19.3979C3.5 18.7217 3.5 17.8751 3.5 16.1818V10Z\" stroke=\"#4FA729\" stroke-width=\"1.5\" stroke-linejoin=\"round\"\/>\r\n            <path d=\"M20.5 12C20.5 13.8409 19.0076 15.3333 17.1667 15.3333C16.5009 15.3333 15.716 15.2167 15.0686 15.3901C14.4935 15.5442 14.0442 15.9935 13.8901 16.5686C13.7167 17.216 13.8333 18.0009 13.8333 18.6667C13.8333 20.5076 12.3409 22 10.5 22\" stroke=\"#4FA729\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\r\n            <path d=\"M8 7H15\" stroke=\"#4FA729\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\r\n            <path d=\"M8 11H11\" stroke=\"#4FA729\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\r\n          <\/svg>\r\n                <\/span>\r\n\r\n      <p class=\"article-callout__title\">\r\n        En r\u00e9sum\u00e9      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"article-callout__content\">\r\n      \n<ul class=\"wp-block-list\">\n<li><strong>Duo compl\u00e9mentaire<\/strong>&nbsp;: Le collag\u00e8ne apporte des acides amin\u00e9s sp\u00e9cifiques, tandis que la vitamine C aide \u00e0 former correctement le collag\u00e8ne.<\/li>\n\n\n\n<li><strong>R\u00f4le structural majeur<\/strong>&nbsp;: Le collag\u00e8ne soutient la peau, les os, les tendons, les vaisseaux sanguins et les cartilages.<\/li>\n\n\n\n<li><strong>Vitamine C indispensable<\/strong>&nbsp;: Elle agit comme cofacteur enzymatique et contribue \u00e0 la formation normale du collag\u00e8ne dans plusieurs tissus.<\/li>\n\n\n\n<li><strong>Peau et \u00e9lasticit\u00e9<\/strong>&nbsp;: Les peptides de collag\u00e8ne hydrolys\u00e9 sont \u00e9tudi\u00e9s pour l\u2019hydratation, l\u2019\u00e9lasticit\u00e9 et l\u2019apparence des rides.<\/li>\n\n\n\n<li><strong>Articulations et os<\/strong>&nbsp;: L\u2019association collag\u00e8ne-vitamine C pr\u00e9sente une coh\u00e9rence nutritionnelle pour soutenir les tissus articulaires et osseux.<\/li>\n\n\n\n<li><strong>Cure r\u00e9guli\u00e8re<\/strong>&nbsp;: Les effets s\u2019\u00e9valuent sur plusieurs semaines, avec des doses souvent \u00e9tudi\u00e9es entre 2,5 et 10 g de collag\u00e8ne par jour, selon l\u2019objectif vis\u00e9.<\/li>\n<\/ul>\n    <\/div>\r\n\r\n<\/section>\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-d9c553dd\"><h2 class=\"uagb-heading-text\">Quel est le r\u00f4le du collag\u00e8ne dans l&rsquo;organisme&nbsp;?<\/h2><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Le collag\u00e8ne est la prot\u00e9ine structurale la plus abondante de l&rsquo;organisme. Il forme la charpente des tissus conjonctifs&nbsp;: la peau, les os, les tendons et les vaisseaux sanguins lui doivent leur tenue m\u00e9canique, et il constitue la base du cartilage des articulations.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sa structure en triple h\u00e9lice lui donne sa r\u00e9sistance. Trois cha\u00eenes d&rsquo;acides amin\u00e9s s&rsquo;enroulent les unes autour des autres, stabilis\u00e9es par des liaisons chimiques qui ne se forment que dans des conditions bien pr\u00e9cises. C&rsquo;est l\u00e0 que la vitamine C entre en sc\u00e8ne, comme nous allons le voir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dans la peau, le collag\u00e8ne de type I occupe l&rsquo;essentiel du derme, o\u00f9 il assure la fermet\u00e9 et participe \u00e0 l&rsquo;\u00e9lasticit\u00e9 du tissu. Sa production naturelle d\u00e9cline \u00e0 partir de la vingtaine, un ph\u00e9nom\u00e8ne li\u00e9 au vieillissement qui explique l&rsquo;apparition progressive des ridules puis des rides.<\/p>\n\n\n\r\n<section class=\"article-callout article-callout--takeaway panel summary-box\">\r\n\r\n    <div class=\"article-callout__header\">\r\n      <span class=\"article-callout__icon\" aria-hidden=\"true\">\r\n                  <svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\r\n            <path d=\"M5.14286 14C4.41735 12.8082 4 11.4118 4 9.91886C4 5.54539 7.58172 2 12 2C16.4183 2 20 5.54539 20 9.91886C20 11.4118 19.5827 12.8082 18.8571 14\" stroke=\"#98800B\" stroke-width=\"1.5\" stroke-linecap=\"round\"\/>\r\n            <path d=\"M7.38287 17.0982C7.291 16.8216 7.24507 16.6833 7.25042 16.5713C7.26174 16.3343 7.41114 16.1262 7.63157 16.0405C7.73579 16 7.88105 16 8.17157 16H15.8284C16.119 16 16.2642 16 16.3684 16.0405C16.5889 16.1262 16.7383 16.3343 16.7496 16.5713C16.7549 16.6833 16.709 16.8216 16.6171 17.0982C16.4473 17.6094 16.3624 17.8651 16.2315 18.072C15.9572 18.5056 15.5272 18.8167 15.0306 18.9408C14.7935 19 14.525 19 13.9881 19H10.0119C9.47495 19 9.2065 19 8.96944 18.9408C8.47283 18.8167 8.04281 18.5056 7.7685 18.072C7.63755 17.8651 7.55266 17.6094 7.38287 17.0982Z\" stroke=\"#98800B\" stroke-width=\"1.5\"\/>\r\n            <path d=\"M15 19L14.8707 19.6466C14.7293 20.3537 14.6586 20.7072 14.5001 20.9866C14.2552 21.4185 13.8582 21.7439 13.3866 21.8994C13.0816 22 12.7211 22 12 22C11.2789 22 10.9184 22 10.6134 21.8994C10.1418 21.7439 9.74484 21.4185 9.49987 20.9866C9.34144 20.7072 9.27073 20.3537 9.12932 19.6466L9 19\" stroke=\"#98800B\" stroke-width=\"1.5\"\/>\r\n            <path d=\"M12 16V11\" stroke=\"#98800B\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\r\n          <\/svg>\r\n                <\/span>\r\n\r\n      <p class=\"article-callout__title\">\r\n        Bon \u00e0 savoir      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"article-callout__content\">\r\n      \n<p class=\"wp-block-paragraph\">&nbsp;Aval\u00e9, le&nbsp;<a href=\"https:\/\/www.nutrixeal.fr\/58-collagene\">collag\u00e8ne<\/a>&nbsp;ne rejoint pas directement votre peau. Comme toute prot\u00e9ine, il est d\u00e9coup\u00e9 par la digestion en acides amin\u00e9s et en peptides que le corps r\u00e9emploie selon ses propres besoins.<\/p>\n    <\/div>\r\n\r\n<\/section>\n\n\n<p class=\"wp-block-paragraph\">Cette r\u00e9alit\u00e9 digestive change la fa\u00e7on de penser une cure&nbsp;: il ne s&rsquo;agit pas de remplacer le collag\u00e8ne perdu, mais de fournir \u00e0 l&rsquo;organisme les mat\u00e9riaux et les cofacteurs dont il a besoin pour sa propre production.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-a815e269\"><h2 class=\"uagb-heading-text\">La vitamine C&nbsp;: un puissant alli\u00e9 pour la synth\u00e8se du collag\u00e8ne<\/h2><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">La vitamine C, ou acide ascorbique, est un nutriment que le corps humain ne sait pas fabriquer. Elle doit donc \u00eatre apport\u00e9e chaque jour par l&rsquo;alimentation, ce qui en fait un \u00e9l\u00e9ment indispensable et non un simple compl\u00e9ment de confort.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Son r\u00f4le dans la synth\u00e8se du collag\u00e8ne est direct et document\u00e9. L&rsquo;acide ascorbique agit comme cofacteur de deux enzymes, la prolyl-hydroxylase et la lysyl-hydroxylase, qui stabilisent la triple h\u00e9lice. Sans elle, la mol\u00e9cule se forme mal et reste fragile.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C&rsquo;est ce m\u00e9canisme qui fonde une reconnaissance formelle&nbsp;:&nbsp;la vitamine C contribue \u00e0 la formation normale de collag\u00e8ne pour assurer le fonctionnement normal de la peau. La m\u00eame relation vaut pour les os, les cartilages, les gencives, les dents et les vaisseaux sanguins.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Son action ne s&rsquo;arr\u00eate pas l\u00e0.&nbsp;La vitamine C contribue \u00e0 prot\u00e9ger les cellules contre le stress oxydatif, c&rsquo;est-\u00e0-dire contre les dommages caus\u00e9s par les radicaux libres, ces mol\u00e9cules instables produites notamment par l&rsquo;exposition solaire et le tabac.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Elle intervient enfin sur le terrain des d\u00e9fenses&nbsp;:&nbsp;la vitamine C contribue au fonctionnement normal du syst\u00e8me immunitaire. Cette polyvalence explique la place que lui accorde la&nbsp;<a href=\"https:\/\/www.nutrixeal.fr\/71-vitamine-c\">vitamine C<\/a>&nbsp;dans les formules de beaut\u00e9 et de bien-\u00eatre.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-3b36dcd9\"><h2 class=\"uagb-heading-text\">La synergie parfaite&nbsp;: associer collag\u00e8ne marin &amp; vitamine C<\/h2><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">L&rsquo;association a une logique. Le collag\u00e8ne marin apporte les acides amin\u00e9s sp\u00e9cifiques de cette prot\u00e9ine, la vitamine C permet leur assemblage correct. L&rsquo;un fournit les briques, l&rsquo;autre rend le montage possible.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-d0b80360\"><h3 class=\"uagb-heading-text\">Pourquoi associer collag\u00e8ne marin et vitamine C&nbsp;?<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Le&nbsp;<a href=\"https:\/\/www.nutrixeal.fr\/223-collagene-marin\">collag\u00e8ne marin<\/a>&nbsp;est riche en glycine, en proline et en hydroxyproline, les acides amin\u00e9s caract\u00e9ristiques de cette prot\u00e9ine. Ces briques sont n\u00e9cessaires, mais elles ne suffisent pas&nbsp;: leur assemblage exige l&rsquo;intervention des enzymes dont la vitamine C est le cofacteur.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Apporter du collag\u00e8ne marin hydrolys\u00e9 sans vitamine C revient donc \u00e0 livrer des mat\u00e9riaux sur un chantier sans l&rsquo;outil qui permet de les assembler. \u00c0 l&rsquo;inverse, un apport de vitamine C sans mati\u00e8re premi\u00e8re ne produit rien non plus si l&rsquo;alimentation est pauvre en prot\u00e9ines.<\/p>\n\n\n\r\n<section class=\"article-callout article-callout--takeaway panel summary-box\">\r\n\r\n    <div class=\"article-callout__header\">\r\n      <span class=\"article-callout__icon\" aria-hidden=\"true\">\r\n                  <svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\r\n            <path d=\"M5.14286 14C4.41735 12.8082 4 11.4118 4 9.91886C4 5.54539 7.58172 2 12 2C16.4183 2 20 5.54539 20 9.91886C20 11.4118 19.5827 12.8082 18.8571 14\" stroke=\"#98800B\" stroke-width=\"1.5\" stroke-linecap=\"round\"\/>\r\n            <path d=\"M7.38287 17.0982C7.291 16.8216 7.24507 16.6833 7.25042 16.5713C7.26174 16.3343 7.41114 16.1262 7.63157 16.0405C7.73579 16 7.88105 16 8.17157 16H15.8284C16.119 16 16.2642 16 16.3684 16.0405C16.5889 16.1262 16.7383 16.3343 16.7496 16.5713C16.7549 16.6833 16.709 16.8216 16.6171 17.0982C16.4473 17.6094 16.3624 17.8651 16.2315 18.072C15.9572 18.5056 15.5272 18.8167 15.0306 18.9408C14.7935 19 14.525 19 13.9881 19H10.0119C9.47495 19 9.2065 19 8.96944 18.9408C8.47283 18.8167 8.04281 18.5056 7.7685 18.072C7.63755 17.8651 7.55266 17.6094 7.38287 17.0982Z\" stroke=\"#98800B\" stroke-width=\"1.5\"\/>\r\n            <path d=\"M15 19L14.8707 19.6466C14.7293 20.3537 14.6586 20.7072 14.5001 20.9866C14.2552 21.4185 13.8582 21.7439 13.3866 21.8994C13.0816 22 12.7211 22 12 22C11.2789 22 10.9184 22 10.6134 21.8994C10.1418 21.7439 9.74484 21.4185 9.49987 20.9866C9.34144 20.7072 9.27073 20.3537 9.12932 19.6466L9 19\" stroke=\"#98800B\" stroke-width=\"1.5\"\/>\r\n            <path d=\"M12 16V11\" stroke=\"#98800B\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\r\n          <\/svg>\r\n                <\/span>\r\n\r\n      <p class=\"article-callout__title\">\r\n        Bon \u00e0 savoir      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"article-callout__content\">\r\n      \n<p class=\"wp-block-paragraph\">L&rsquo;organisme d&rsquo;un adulte a besoin d&rsquo;environ 110 mg de vitamine C par jour selon les r\u00e9f\u00e9rences fran\u00e7aises.<sup>[1]<\/sup>&nbsp;Un d\u00e9ficit prolong\u00e9 fragilise directement la production de collag\u00e8ne, avant m\u00eame de provoquer des signes visibles.<\/p>\n    <\/div>\r\n\r\n<\/section>\n\n\n<p class=\"wp-block-paragraph\">Cette association est donc coh\u00e9rente sur le plan biochimique.&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-0dd44f6c\"><h3 class=\"uagb-heading-text\">Les bienfaits prouv\u00e9s de cette association pour la peau<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">La vitamine C et le collag\u00e8ne marin pr\u00e9sentent ici des r\u00f4les compl\u00e9mentaires. La vitamine C intervient dans la formation normale du collag\u00e8ne et contribue \u00e0 prot\u00e9ger les cellules contre le stress oxydatif, deux fonctions particuli\u00e8rement pertinentes pour la structure et l\u2019int\u00e9grit\u00e9 de la peau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Du c\u00f4t\u00e9 du collag\u00e8ne marin ing\u00e9r\u00e9, les donn\u00e9es cliniques sont \u00e9galement int\u00e9ressantes. De nombreuses \u00e9tudes portant sur des peptides de collag\u00e8ne hydrolys\u00e9 ont observ\u00e9 des am\u00e9liorations de param\u00e8tres cutan\u00e9s tels que l\u2019hydratation, l\u2019\u00e9lasticit\u00e9 ou encore l\u2019apparence des rides apr\u00e8s plusieurs semaines de suppl\u00e9mentation. Plusieurs revues syst\u00e9matiques et m\u00e9ta-analyses vont dans le m\u00eame sens, m\u00eame si les r\u00e9sultats peuvent varier selon les peptides utilis\u00e9s, les doses, la dur\u00e9e des \u00e9tudes et les populations \u00e9tudi\u00e9es.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ces donn\u00e9es soutiennent donc l\u2019int\u00e9r\u00eat du collag\u00e8ne marin dans une strat\u00e9gie nutritionnelle destin\u00e9e \u00e0 la peau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u2019autres nutriments peuvent compl\u00e9ter cette association&nbsp;: le zinc et la biotine contribuent au maintien d\u2019une peau normale. Une formule beaut\u00e9 compl\u00e8te peut ainsi associer collag\u00e8ne marin, vitamine C et micronutriments compl\u00e9mentaires.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-c8a7d741\"><h3 class=\"uagb-heading-text\">Les bienfaits concrets pour les articulations et les os<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Sur le plan articulaire, les donn\u00e9es cliniques sont aujourd\u2019hui plut\u00f4t solides et encourageantes. Une m\u00e9ta-analyse publi\u00e9e en 2025, regroupant 11 essais randomis\u00e9s contr\u00f4l\u00e9s contre placebo et 870 participants, conclut \u00e0 une diminution significative de la douleur ainsi qu\u2019\u00e0 une am\u00e9lioration de la fonction articulaire du genou chez les personnes suppl\u00e9ment\u00e9es en collag\u00e8ne. Les b\u00e9n\u00e9fices ont \u00e9t\u00e9 observ\u00e9s aussi bien avec du collag\u00e8ne hydrolys\u00e9 qu\u2019avec du collag\u00e8ne de type II natif, selon des m\u00e9canismes diff\u00e9rents.<sup>[3]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La vitamine C compl\u00e8te particuli\u00e8rement bien cette association puisqu\u2019elle contribue \u00e0 la formation normale de collag\u00e8ne pour assurer le fonctionnement normal des cartilages et des os. L\u2019association collag\u00e8ne\u2013vitamine C pr\u00e9sente ainsi une coh\u00e9rence \u00e0 la fois physiologique et nutritionnelle pour soutenir durablement les tissus articulaires et osseux.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Deux oligo\u00e9l\u00e9ments compl\u00e8tent utilement ce tableau&nbsp;: le mangan\u00e8se et le cuivre contribuent respectivement \u00e0 la formation et au maintien de tissus conjonctifs normaux.&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-e9a7df2c\"><h2 class=\"uagb-heading-text\">Comment choisir et consommer un compl\u00e9ment de collag\u00e8ne et vitamine C&nbsp;?<\/h2><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-93e95513\"><h3 class=\"uagb-heading-text\">Crit\u00e8res de s\u00e9lection d&rsquo;un compl\u00e9ment de qualit\u00e9<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Le premier crit\u00e8re est la tra\u00e7abilit\u00e9. Un fabricant s\u00e9rieux indique l&rsquo;esp\u00e8ce de poisson, la zone de p\u00eache et le proc\u00e9d\u00e9 d&rsquo;extraction du collag\u00e8ne marin, ainsi que les analyses de m\u00e9taux lourds disponibles.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le deuxi\u00e8me porte sur les dosages r\u00e9els. Un produit qui affiche fi\u00e8rement sa vitamine C sans en pr\u00e9ciser la quantit\u00e9 en milligrammes m\u00e9rite votre m\u00e9fiance&nbsp;: une dose symbolique n&rsquo;apporte rien. V\u00e9rifiez que l&rsquo;apport couvre une part significative des besoins quotidiens.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le troisi\u00e8me concerne la composition. Ar\u00f4mes, \u00e9dulcorants, colorants et agents de charge diluent la dose utile. Les meilleurs produits de cette cat\u00e9gorie tiennent en trois ou quatre ingr\u00e9dients, parfois enrichis d&rsquo;acide hyaluronique.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Enfin, regardez la forme du collag\u00e8ne. Un collag\u00e8ne marin hydrolys\u00e9, donc d\u00e9coup\u00e9 en peptides de collag\u00e8ne, franchit la barri\u00e8re intestinale, ce que ne fait pas la mol\u00e9cule native <strong>qui agit via des m\u00e9canismes diff\u00e9rents<\/strong>.<sup>[2]<\/sup><\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-3b72125d\"><h3 class=\"uagb-heading-text\">Les diff\u00e9rentes formes&nbsp;: poudre, g\u00e9lules, comprim\u00e9s<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">La poudre s&rsquo;impose pour les dosages \u00e9lev\u00e9s. \u00c0 plusieurs grammes par jour, elle \u00e9vite d&rsquo;avaler une dizaine d&rsquo;unit\u00e9s et son co\u00fbt au gramme est le plus bas. Un collag\u00e8ne marin hydrolys\u00e9 de qualit\u00e9 est pratiquement neutre en go\u00fbt et se dissout dans une boisson chaude comme froide.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les g\u00e9lules conviennent aux personnes qui se d\u00e9placent souvent ou qui n&rsquo;aiment pas pr\u00e9parer une boisson. Leur inconv\u00e9nient tient au nombre&nbsp;: atteindre une dose utile en demande plusieurs par jour, ce qui p\u00e8se sur le prix de la cure.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les comprim\u00e9s partagent les m\u00eames limites, avec parfois des excipients de compression suppl\u00e9mentaires.&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-f28f75d8\"><h3 class=\"uagb-heading-text\">Posologie recommand\u00e9e et conseils d&rsquo;utilisation<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Les \u00e9tudes cliniques sur les peptides de collag\u00e8ne retiennent le plus souvent des doses de 2,5 \u00e0 10 g par jour.<sup>[2]<\/sup> C&rsquo;est la fourchette qui sert de rep\u00e8re.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour la vitamine C, la r\u00e9f\u00e9rence nutritionnelle fran\u00e7aise s&rsquo;\u00e9tablit \u00e0 110 mg par jour chez l&rsquo;adulte.<sup>[1]<\/sup>&nbsp;Les formules associ\u00e9es en apportent g\u00e9n\u00e9ralement entre 80 et 200 mg, ce qui est coh\u00e9rent.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le moment de la prise importe peu. Certains pr\u00e9f\u00e8rent le matin \u00e0 jeun, d&rsquo;autres au cours d&rsquo;un repas pour le confort digestif. La r\u00e9gularit\u00e9 compte davantage&nbsp;: une cure se conduit sur deux \u00e0 trois mois, renouvelable, dans le cadre d&rsquo;une alimentation \u00e9quilibr\u00e9e et d&rsquo;un mode de vie sain.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-b84c3429\"><h3 class=\"uagb-heading-text\">Quand attendre les premiers r\u00e9sultats&nbsp;?<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">C&rsquo;est la question la plus fr\u00e9quente, et la r\u00e9ponse demande de la franchise. Le renouvellement des tissus est lent&nbsp;: le derme se remanie sur plusieurs semaines, le cartilage sur plusieurs mois.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les protocoles d&rsquo;\u00e9tude sur la peau durent g\u00e9n\u00e9ralement huit \u00e0 douze semaines, ce qui donne un ordre de grandeur. En dessous d&rsquo;un mois, aucun changement ne peut raisonnablement \u00eatre attribu\u00e9 \u00e0 une cure.<\/p>\n\n\n\r\n<section class=\"article-callout article-callout--takeaway panel summary-box\">\r\n\r\n    <div class=\"article-callout__header\">\r\n      <span class=\"article-callout__icon\" aria-hidden=\"true\">\r\n                  <svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\r\n            <path d=\"M5.14286 14C4.41735 12.8082 4 11.4118 4 9.91886C4 5.54539 7.58172 2 12 2C16.4183 2 20 5.54539 20 9.91886C20 11.4118 19.5827 12.8082 18.8571 14\" stroke=\"#98800B\" stroke-width=\"1.5\" stroke-linecap=\"round\"\/>\r\n            <path d=\"M7.38287 17.0982C7.291 16.8216 7.24507 16.6833 7.25042 16.5713C7.26174 16.3343 7.41114 16.1262 7.63157 16.0405C7.73579 16 7.88105 16 8.17157 16H15.8284C16.119 16 16.2642 16 16.3684 16.0405C16.5889 16.1262 16.7383 16.3343 16.7496 16.5713C16.7549 16.6833 16.709 16.8216 16.6171 17.0982C16.4473 17.6094 16.3624 17.8651 16.2315 18.072C15.9572 18.5056 15.5272 18.8167 15.0306 18.9408C14.7935 19 14.525 19 13.9881 19H10.0119C9.47495 19 9.2065 19 8.96944 18.9408C8.47283 18.8167 8.04281 18.5056 7.7685 18.072C7.63755 17.8651 7.55266 17.6094 7.38287 17.0982Z\" stroke=\"#98800B\" stroke-width=\"1.5\"\/>\r\n            <path d=\"M15 19L14.8707 19.6466C14.7293 20.3537 14.6586 20.7072 14.5001 20.9866C14.2552 21.4185 13.8582 21.7439 13.3866 21.8994C13.0816 22 12.7211 22 12 22C11.2789 22 10.9184 22 10.6134 21.8994C10.1418 21.7439 9.74484 21.4185 9.49987 20.9866C9.34144 20.7072 9.27073 20.3537 9.12932 19.6466L9 19\" stroke=\"#98800B\" stroke-width=\"1.5\"\/>\r\n            <path d=\"M12 16V11\" stroke=\"#98800B\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\r\n          <\/svg>\r\n                <\/span>\r\n\r\n      <p class=\"article-callout__title\">\r\n        Bon \u00e0 savoir      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"article-callout__content\">\r\n      \n<p class=\"wp-block-paragraph\">Les signes du vieillissement cutan\u00e9 d\u00e9pendent aussi de l&rsquo;exposition solaire, du tabac, du sommeil et de l&rsquo;alimentation. Aucune cure ne compense un mode de vie qui acc\u00e9l\u00e8re par ailleurs le processus.<\/p>\n    <\/div>\r\n\r\n<\/section>\n\n\n<p class=\"wp-block-paragraph\">Retenez donc de juger sur la dur\u00e9e, sans attendre de transformation spectaculaire, et de consid\u00e9rer la cure comme un \u00e9l\u00e9ment parmi d&rsquo;autres d&rsquo;une routine de sant\u00e9 globale.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-c674e700\"><h2 class=\"uagb-heading-text\">FAQ&nbsp;: Vos questions sur le collag\u00e8ne et la vitamine C<\/h2><\/div>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1787648826520\"><strong class=\"schema-faq-question\">Est-il possible de combiner collag\u00e8ne et vitamine C&nbsp;?<\/strong> <p class=\"schema-faq-answer\">Oui, et c&rsquo;est m\u00eame l&rsquo;association la plus coh\u00e9rente qui soit. Aucune interaction probl\u00e9matique n&rsquo;existe entre les deux, et la vitamine C est le cofacteur direct de la synth\u00e8se du collag\u00e8ne.\u00a0<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1787648852136\"><strong class=\"schema-faq-question\">Quels sont les effets du collag\u00e8ne et de la vitamine C sur la peau&nbsp;?<\/strong> <p class=\"schema-faq-answer\">Du c\u00f4t\u00e9 de la vitamine C, la fonction est reconnue&nbsp;: elle participe \u00e0 la formation normale du collag\u00e8ne cutan\u00e9 et prot\u00e8ge les cellules contre le stress oxydatif. Du c\u00f4t\u00e9 du collag\u00e8ne ing\u00e9r\u00e9, plusieurs \u00e9tudes cliniques et m\u00e9ta-analyses rapportent des effets favorables sur diff\u00e9rents param\u00e8tres cutan\u00e9s, notamment l\u2019\u00e9lasticit\u00e9, l\u2019hydratation et l\u2019apparence des rides, m\u00eame si l\u2019ampleur des b\u00e9n\u00e9fices varie selon les protocoles et les formes de collag\u00e8ne \u00e9tudi\u00e9es.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1787648863272\"><strong class=\"schema-faq-question\">Les meilleures sources alimentaires de vitamine C pour accompagner le collag\u00e8ne<\/strong> <p class=\"schema-faq-answer\">Le cassis, le persil, le poivron rouge, le kiwi et les agrumes figurent parmi les sources les plus riches. Un panier de fruits et l\u00e9gumes frais et vari\u00e9s couvre facilement les besoins, \u00e0 condition de limiter les pertes li\u00e9es \u00e0 une conservation prolong\u00e9e et aux cuissons trop longues ou trop intenses.<br>La vitamine C \u00e9tant sensible \u00e0 la chaleur et \u00e0 l&rsquo;air, privil\u00e9giez les v\u00e9g\u00e9taux crus ou peu cuits. Un panier de courses bien construit reste la base&nbsp;: les compl\u00e9ments alimentaires viennent en appui d&rsquo;une alimentation saine, jamais \u00e0 sa place.<\/p> <\/div> <\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-d6f92716\"><h2 class=\"uagb-heading-text\">Sources<\/h2><\/div>\n\n\n\n<ol class=\"wp-block-list\">\n<li>ANSES. Les r\u00e9f\u00e9rences nutritionnelles en vitamines et min\u00e9raux. Rapport d&rsquo;expertise collective, 2021.<\/li>\n\n\n\n<li>Virgilio N, Sch\u00f6n C, M\u00f6dinger Y, van der Steen B, Vleminckx S, van Holthoon FL, et al. Absorption of bioactive peptides following collagen hydrolysate intake: a randomized, double-blind crossover study in healthy individuals. Frontiers in Nutrition, 2024;11:1416643. DOI 10.3389\/fnut.2024.141664<\/li>\n\n\n\n<li>Simental-Mend\u00eda M, Ortega-Mata D, Acosta-Olivo CA, Simental-Mend\u00eda LE, Pe\u00f1a-Mart\u00ednez VM, Vilchez-Cavazos F. Effect of collagen supplementation on knee osteoarthritis: an updated systematic review and meta-analysis of randomised controlled trials. Clin Exp Rheumatol. janv 2025;43(1):126\u201134. doi:<a href=\"https:\/\/doi.org\/10.55563\/clinexprheumatol\/kflfr5\">10.55563\/clinexprheumatol\/kflfr5<\/a> PubMed PMID: 39212129.<\/li>\n<\/ol>\n\n\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Sur les \u00e9tiquettes, le collag\u00e8ne marin arrive presque toujours accompagn\u00e9 de vitamine C. Cette association n&rsquo;a rien d&rsquo;un argument commercial ajout\u00e9 apr\u00e8s coup&nbsp;: elle repose sur un m\u00e9canisme biochimique pr\u00e9cis, qui justifie pleinement cette combinaison. Voici pourquoi. Quel est le r\u00f4le du collag\u00e8ne dans l&rsquo;organisme&nbsp;? Le collag\u00e8ne est la prot\u00e9ine structurale la plus abondante de [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1216,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","nutrixeal_featured":false,"nutrixeal_most_read":false,"footnotes":""},"categories":[22,37,39],"tags":[],"class_list":["post-1215","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles-articulations","category-articles-collagene","category-articles-vitamine-c"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Collag\u00e8ne &amp; vitamine C : pourquoi associer ces deux actifs ?<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez le pouvoir du collag\u00e8ne et de la vitamine C pour une peau \u00e9clatante et des articulations souples. 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scientifique Nutrixeal","author_link":"https:\/\/www.nutrixeal.fr\/expertise\/author\/equipe-scientifique\/"},"uagb_comment_info":0,"uagb_excerpt":"Sur les \u00e9tiquettes, le collag\u00e8ne marin arrive presque toujours accompagn\u00e9 de vitamine C. Cette association n&rsquo;a rien d&rsquo;un argument commercial ajout\u00e9 apr\u00e8s coup&nbsp;: elle repose sur un m\u00e9canisme biochimique pr\u00e9cis, qui justifie pleinement cette combinaison. Voici pourquoi. Quel est le r\u00f4le du collag\u00e8ne dans l&rsquo;organisme&nbsp;? 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