A process for preparing an extract of Momordica charantia, including: a) preparing crude juice; b) filtering to obtain filtered juice; c) modifying pH; d) allowing the pH modified juice to stabilize; e) neutralizing the stabilized juice; f) allowing the neutralized juice to stand for 20-30 minutes; g) rechecking the pH level; and h) drying the juice to obtain the extract. The process said above is simple, cost effective, which does not employ any harmful organic solvents and which enhances the potency of the constituents. A simple and potent formulation showing anti-diabetic activity comprising active constituents of Momordica charantia is also provided.本開示は簡単で、経費効率が良く、有害な有機溶剤を使用せず、かつ、成分の効能を向上させることのできるモモルディカ カランティアの有効成分の抽出工程を提供するものである。本開示はまた、簡単で有効な抗糖尿病効能がみられるモモルディカ カランティアの有効成分をもつ合成物を提供するものである。