Patent ID: 8883228

Claim:
A method of preparing a composition for the treatment of chronic stable angina pectoris comprising the following steps: (a) separately extracting Radix Salvia miltiorrhiza and Panax notoginseng herbs in hot aqueous reflux, thereby producing an extract of Radix Salvia miltiorrhiza and an extract of Panax notoginseng; (b) separately filtering the extracts of Radix Salvia miltiorrhiza and Panax notoginseng , thereby producing a filtrate of Radix Salvia miltiorrhiza and a filtrate of Panax notoginseng; (c) separately concentrating the filtrates of Radix Salvia miltiorrhiza and Panax notoginseng , thereby producing a concentrate of Radix Salvia miltiorrhiza and a concentrate of Panax notoginseng; (d) separately refining the concentrates of Radix Salvia miltiorrhiza and Panax notoginseng by eluting the concentrates through a resin column and concentrating the eluted concentrates, thereby producing a refined water-soluble extract of Radix Salvia miltiorrhiza and a refined water-soluble extract of Panax notoginseng ; and (e) mixing the refined water-soluble extracts of Radix Salvia miltiorrhiza and Panax notoginseng with borneol, thereby producing a composition for treating chronic stable angina pectoris, wherein the composition comprises from 5 to 40% water-soluble phenolic acid of Radix Salvia miltiorrhiza , from 1 to 10% water-soluble saponin of Panax notoginseng , and from 1 to 5% of borneol.