Method of treating diabetes using plant argyrolobium roseum extract, and a process for the isolation of extract from the said plant

The present invention relates to a process for isolating plant Argyrobium roseum extract that contains flavonoid glycoside, wherein the extract possesses hypoglycaemic activity. The present invention also contemplates a composition containing the extract and a method of treating various hyperglycaemic conditions including non-insulin dependent diabetes mellitus disease condition by administering the extract.