The present invention provides early insulin secretion stimulators
consisting of triterpenes represented by the following general formula
(1) and/or triterpenes represented by the following general formula (2).
1
[where R.sup.1 represents COOH, etc., R.sup.11 and R.sup.12 represent
CH.sub.2OH, etc., X.sup.1 represents hydrogen or OH and X.sup.11,
X.sup.12, X.sup.21 and X.sup.22 represent OH, etc.]