Release of Steroids from Plastibase Semisolid Bases
Abstract
The present research is carried out in order to study the possibility of replacing the classic semisolid bases in steroidal commercial products with Plastibase.
As regard to its high lipophilic properties, the plastibase alone is not a suitable base for hydrocortisone acetate and f.luocinolone acetonide. Addition of 5 and 7.5% of Propylene glycol to plastibase can increase the rate of drug release from vehicle. This change in drug release is related to decrease in drug-vehicle interaction and consequently increasing its partition coefficient. It seems that these considerations can be applied to betamethasone and clobetasole ointments, which are the most utilized in Iranian commerce .
As regard to its high lipophilic properties, the plastibase alone is not a suitable base for hydrocortisone acetate and f.luocinolone acetonide. Addition of 5 and 7.5% of Propylene glycol to plastibase can increase the rate of drug release from vehicle. This change in drug release is related to decrease in drug-vehicle interaction and consequently increasing its partition coefficient. It seems that these considerations can be applied to betamethasone and clobetasole ointments, which are the most utilized in Iranian commerce .
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