An oral solid dosage form having improved dissolution profile and a method of producing the same are provided. The present invention particularly provides a co-processed excipient composition and a method of producing the same. More particularly, it relates to a co-processed binary mixture of crosslinked polyvinylpyrrolidone and calcium silicate wherein the weight ratio of crosslinked polyvinylpyrrolidone and calcium silicate is in the range of 1:1 to 20:1. The binary mixture when combined with a poorly soluble drug enhances its dissolution and extent of release.
