The traditional use of excipients in drug formulations was to
act as inert vehicles to provided necessary weight,
consistency and volume for the correct administration of the
active ingredient, but in modern pharmaceutical dosage forms
they often fulfill multi-functional roles such as modifying
release, improvement of the stability and bioavailability of
the active ingredient, enhancement of patient acceptability
and ensure ease of manufacture. New and improved
excipients continue to be developed to meet the needs of
1,2 advanced drug delivery systems