Abstract: An O/W emulsion composition comprising fluorometholone or clobetasone butyrate, a phospholipid, an oil, a nonionic water-soluble cellulose derivative, and water. The O/W composition has advantages that fluorometholone or clobetasone butyrate contained therein is highly bioavailable and that the solubility of fluorometholone or clobetasone butyrate and the concentration thereof present in the composition can be kept stable. Thus, this composition is usable for the treatment of various inflammatory diseases by the generalized or local administration thereof. It provides a drug which shows an anti-inflammatory activity equal or higher than that of commercially available eye drops comprising a suspension of such an active ingredient even when it is applied in a smaller dose than that of commercially available one and further provides a drug having excellent storability, which reduces apprehension of systemic side effects of fluorometholone or clobetasone butyrate when it is applied to the eyes.

Abstract: An anti-inflammatory eye drop comprises(a) 0.05 to 0.7 weight/volume % of diclofenac sodium;(b) 1 to 10 weight/volume % of .gamma.-cyclodextrin;(c) 1 to 20 weight/volume % of polyvinyl pyrrolidone; and(d) 0.002 to 0.01 weight/volume % of benzethonium chloride or 0.002 to 0.005 weight/volume % of benzalkonium chloride,and has a pH value ranging from 7.0 to 8.5.The anti-inflammatory eye drop may comprise diclofenac sodium in a wide range of concentration, is stable over a long time period and shows only a low degree of ocular irritation.

Abstract: Herein disclosed is a lyophilized pharmaceutical preparation obtained by lyophilizing an aqueous composition having property of reversible thermosetting gelation and comprising an effective amount of a drug, 0.2 to 2.1 (W/V)% of methylcellulose (the content of methoxyl group is within the range of 26 to 33%), 1.2 to 2.3 (w/v)% of citric acid and 0.5 to 13 (W/V)% of polyethylene glycol. The lyophilized pharmaceutical preparation makes it possible to stably store drugs unstable to water till they are put into practical use and, upon therapeutic use, an aqueous composition having property of reversible thermosetting gelation which can undergo gelation when locally applied can easily and immediately be reconstituted from the preparation by addition of a proper amount of a solvent for reconstitution.

Abstract: An aqueous drug composition having property of reversible thermosetting gelation for ophthalmic, dermatological and body cavitical use which comprises effective amount of drugs used for pharmaceutical therapy or diagnosis, methylcellulose, citric acid and polyethylene glycol and has a pH of 3 to 10, characterized in that said aqueous drug composition is fluid liquid before administration or application and forms gel at a body temperature of a local region immediately after administration or application.