Definition of Suspensions:
- A suspension is a heterogeneous system in which insoluble solid particles (dispersed phase) are suspended in a liquid medium (dispersion medium).
Applications in Pharmaceutics:
- Used to administer insoluble drugs orally, topically, or parenterally
- Examples: Antacids (e.g., aluminum hydroxide), antibiotics (e.g., amoxicillin suspension)
Desirable Properties of Suspensions:
- Uniform particle size
- Stability (no rapid settling or caking)
- Redispersibility (easy to resuspend after shaking)
- Pleasant taste and appearance
- Controlled viscosity
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