ABSTRACT
Suspension is a dispersion of a solid in a liquid or gas. A pharmaceutical suspension is a dispersion of solid particles (usually a drug) in a liquid medium (usually aqueous) in which the drug is not readily soluble. This dosage form is used for providing a liquid dosage form for insoluble drugs. An aqueous suspension is a useful formulation system for administering an insoluble or poorly soluble drug. The particle size of the dispersed phase in most oral pharmaceutical suspensions lies between 1 and 50 μm. The lower the particle size, the larger the surface area of the suspended drug. A large surface area of dispersed drug helps rapid drug dissolution, which can help oral drug absorption.
