Lyophilized preparation employing right-handed lansoprazole as active ingredient and preparation method of lyophilized preparation

The invention discloses a lyophilized preparation employing right-handed lansoprazole as an active ingredient and a preparation method of the lyophilized preparation. The lyophilized preparation is mainly prepared from right-handed lansoprazole, polyethylene glycol 400, mannitol and sodium hydroxide, and has the advantages of being simple in preparation technology, good in stability and suitable for industrial large-scale production.