In an ideal suspension formulation, insoluble particles should be uniformlydispersed. However, on standing, the solid particles in suspensions get separated fromthe liquid as sediments. Regardless of the amount of sedimentation, a well-formulatedsuspension should redisperse uniformly in the continuous phase, upon moderateshaking, for a sufficient period of time. This allows the withdrawal of the correct amountof medication with minimal dose variation. The rate of settling can be decreased byusing viscosity improving agents, and the ease of redispersibility can be controlled byusing flocculating agents. Products that are too viscous, however, may not be easy toremove from the container and may be too difficult to transfer to the site of
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