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Pharmaceutical semisolid preparations creams

Waxes have been used by the pharmaceutical industry for many years. Their applications in semisolid preparations, including ointments, creams, or lotions, and in suppositories are well known and numerous publications exist on this topic. Because of their lipophilic properties, waxes have been used in sustained-release single or multiple unit solid dosage forms. This article reviews the different uses of waxes as sustained-release carrier or coating materials. [Pg.4066]

In sections 7.3.1-7.3.4 we have considered only relatively simple dilute emulsions. Many pharmaceutical preparations, lotions or creams are, in fact, complex semisolid or stmc-tured systems which contain excess emulsifier over that required to form a stabilising mono-layer at the oil/water interface. The excess surfactant can interact with other components either at the droplet interface or in the bulk (continuous) phase to produce complex semisolid multiphase systems. Theories derived to explain the stability of dilute colloidal systems cannot be applied directly. In many cases the formation of stable interfacial films at the oil/water interface cannot be considered to play the dominant role in maintaining... [Pg.247]


See other pages where Pharmaceutical semisolid preparations creams is mentioned: [Pg.3257]    [Pg.395]    [Pg.203]    [Pg.203]    [Pg.954]    [Pg.995]    [Pg.1559]    [Pg.111]    [Pg.667]   
See also in sourсe #XX -- [ Pg.3257 ]




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Pharmaceutical semisolid preparations

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