Simultaneous estimation of rutin and donepezil through RP-HPLC: implication in pharmaceutical and biological samples.

A HPLC method was developed and validated for the novel combination of rutin (RN) and donepezil (DNP). RN and DNP were simultaneously eluted through a C18 column (Ø 150 × 4.6 mm) with a 60:40 v/v ratio of 0.