Oral preparations excellent in storage stability and containing salts offorskolin derivatives represented by general formula (1), such as colforsindapropate hydrochloride [6-(3-dimethylaminopropionyl)forskolin], and alkalimetal halides wherein R1 represents hydrogen; R4 represents vinyl; and one ofR2 and R3 represents -CO(CH2)mNR5R6 (wherein R5 and R6 represent each loweralkyl, etc. and m is an integer of from 1 to 5), while another representshydrogen or -CO(CH2)nX [wherein X represents hydrogen or -NR7R8 (wherein R7and R8 represent each lower alkyl, etc.), and n is an integer of from 1 to 5].
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