A sustained release preparation of prostaglandin I derivatives, which is highly safe and has stable drug-releasing and absorption properties, is disclosed. In the orally administrable preparation, the active component is a prostaglandin I derivative and the release-controlling component is a hydrogel base.

Una preparazione continua del rilascio dei derivati della prostaglandina I, che è altamente sicuro ed ha scuderia droga-liberarsi e proprietà di assorbimento, è rilevata. Nella preparazione oralmente administrable, il componente attivo è una prostaglandina I derivative ed il componente dicontrollo è una base dell'idrogelo.

 
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