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Suspension: A suspension is a preparation of finely divided undissolved drugs, dispensed in a liquid phase. It is a two phase dosage system in which a finely divided solid in mixture with, but not dissolved in a fluid. Suspension are usually liquid preparation which are prepared by adding suspending agents or other suitable excipients are purified water or oil to splid drugs.
A pharmaceutical suspension could be a coarse dispersion of insoluble solid particles during a liquid medium. The particle diameter during a suspension is sometimes bigger than 0.5 µm. However, it’s tough and additionally impractical to impose a pointy boundary between the suspensions and also the dispersions having finer particles.
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