Aqueous composition containing cromoglycic acid

摘要

PCT No. PCT/JP95/02724 Sec. 371 Date Jun. 26, 1998 Sec. 102(e) Date Jun. 26, 1998 PCT Filed Dec. 27, 1995 PCT Pub. No. WO97/24142 PCT Pub. Date Jul. 10, 1997An aqueous pharmaceutical composition comprising sodium cromoglicate as an active ingredient and a quaternary ammonium compound such as benzalkonium chloride as a preservative, characterized in that said composition comprises a precipitation inhibitor selected from the group consisting of alkanolamines including 2-aminoethanol and tocopherols including d- alpha -tocopherol is provided. The composition has characteristic feature of free from precipitation or turbidity in manufacturing processes and during storage.