Lyophilized preparation comprising influenza vaccine, and...

A - Human Necessities – 61 – K

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Details

A61K 39/145 (2006.01) A61K 9/19 (2006.01) A61K 47/18 (2006.01) A61P 31/16 (2006.01)

Patent

CA 2680193

Disclosed is a lyophilized preparation improved in the stability of an influenza vaccine contained therein. A lyophilized preparation remarkably improved in the stability of an influenza vaccine contained therein can be prepared by lyophilizing an aqueous solution satisfying the following requirements (A) to (C): (A) the aqueous solution contains (i) an influenza vaccine, (ii) a hydrophobic amino acid, and (iii) arginine and an acid addition salt thereof; (B) the component (iii) is contained in an amount of 20 to 85% by weight relative to the total amount of the lyophilized preparation; and (C) the pH value of the aqueous solution aqueous solution is adjusted to pH 8 to 10 by controlling the ratio between arginine and the acid addition salt thereof which constitute the component (iii).

La présente invention concerne une préparation lyophilisée améliorée dans la stabilité d'un vaccin antigrippal contenu dans celle-ci. Une préparation lyophilisée remarquablement améliorée dans la stabilité d'un vaccin antigrippal contenu dans celle-ci peut être préparée en lyophilisant une solution aqueuse répondant aux exigences suivantes (A) à (C) : (A) la solution aqueuse contient (i) un vaccin antigrippal, (ii) un acide aminé hydrophobe et (iii) de l'arginine et un sel d'ajout d'acide de celle-ci ; (B) le composant (iii) est présent dans une quantité comprise entre 20 et 85 % en poids par rapport à la quantité totale de préparation lyophilisée ; et (C) la valeur du pH de la solution aqueuse est ajustée sur un pH compris entre 8 et 10 en contrôlant le rapport entre l'arginine et le sel d'ajout d'acide de celle-ci qui constitue le composant (iii).

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