Friday, September 17, 2021

Pharmaceutics

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7 Differences between Oil-in-Water and Water-in-Oil Emulsions

An emulsion is a dispersion of at least two immiscible liquids, one of which is dispersed as droplets in the other liquid, and stabilized by…
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15 Quality Attributes for Emulsions

An emulsion is a biphasic system consisting of at least two immiscible liquids (or two liquids that are saturated with each other), one of which…
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Advantages and Disadvantages of Pharmaceutical Emulsions

An emulsion is a dispersed system containing at least two immiscible (or partially miscible) liquid phases. The two phases of emulsions are stabilized by the…
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Pharmaceutical Emulsions: An Overview

Pharmaceutical emulsions are liquid disperse systems in which the dispersed phase is composed of small globules of a liquid distributed throughout a vehicle in which…
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Drug Delivery Systems: An Overview

Drug delivery systems (DDS) are an important component of drug development and therapeutics. The design of an effective delivery system requires a thorough understanding of…
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Mechanisms Involved in the Mixing of Pharmaceutical Powders

Powder mixing is an operation that aims to treat two or more components, initially in an unmixed or partially mixed state, so that each unit…
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Effervescent Salts

Effervescent salts (sometimes called effervescent powders) are a special type of bulk powders or granules containing sodium bicarbonate, a suitable organic acid (citric or tartaric),…
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Effervescent Salts

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Classification of Pharmaceutical Powders

Powders are solid dosage form containing dry mixtures of finely divided drug substance(s) and excipients intended for internal or external use. Although the use of…
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Advantages and Disadvantages of Pharmaceutical Powders

Powders are solid dosage forms containing dry mixtures of finely divided medicinal and non-medicinal agents intended for internal or external use. It is a solid…
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Pharmaceutical Powders: An Overview

Powders represent one of the oldest and most conventional dosage forms. The term “powder” has more than one connotation in pharmacy. It may be used…
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Physical Stability Issues Frequently Encountered In Suspensions

Stability of a pharmaceutical product may be defined as the capability of a particular formulation in a specific container/closure system to remain within its physical,…
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Chemical Stability Issues Frequently Encountered in Suspensions

Suspensions are commonly referred to as dispersions in which the therapeutic agent is dispersed in the external phase (the vehicle). In an ideal suspension, particles…
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Theoretical Considerations for Pharmaceutical Suspensions

A suspension is a disperse system in which solid, vehicle-insoluble particles (internal phase) are uniformly suspended by mechanical agitation and formulation design throughout the liquid…
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Rheologic Considerations for Pharmaceutical Suspensions

Rheologic consideration is of great importance in the study of the stability of pharmaceutical suspensions. This is because the viscosity of a suspension can modify…
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Stability Considerations for Pharmaceutical Suspensions

A suspension is a heterogeneous system consisting of two phases. The dispersed or internal phase is made up of particulate matter that is essentially insoluble…
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Limitations of Stokes’ Law

Stokes’ law is a generalized equation that describes how certain factors affect the rate of settling in dispersed systems. The implication is that, as the…
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Limitations of Stokes’ Law

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Surface Active Agents (Surfactants) Used in Pharmaceutical Suspensions

Surfactant is a general name for substances that absorb to surfaces or interfaces to reduce surface or interfacial tension. These agents aid wetting and dispersion…
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Surface Active Agents (Surfactants): Types and Applications

Surface active agents, also known as tensides, amphiphiles or surfactants (for short) is a general name for substances that tend to preferentially accumulate at the…
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Advantages and Disadvantages of Pharmaceutical Suspensions

Pharmaceutical suspension is a liquid dosage form containing finely divided, undissolved drug particles dispersed throughout a liquid vehicle in which the drug exhibits a minimum…
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Liquid Dosage Forms: Pharmaceutical Suspensions

Pharmaceutical suspensions are liquid dosage forms containing finely divided insoluble materials (the suspensoid) distributed somewhat uniformly throughout the suspending medium (suspending vehicle) in which the…
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