conclusion
a convenient,rapid , accurate ,precise and economical RP-HPLC method has been developed for estimation of diazepam in bulk and tablet dosage form . the assay provides a linear response across a wild range of concentrations and it utilizes a mobile phase which can be easily prepared and diluent is economic ,readily avaiable .the prepared method can be used to the routine analysis of diazepam hydrochloride in bulk preparations of the drug and ,in pharmaceutical dosage forms without interference of excipients