Classification of Dosage Forms - The Pharma Education.
Types of dosage forms: Definition: Dosage forms are the means by which drug molecules are delivered to sites of action within the body. The need for dosage forms: 1- Accurate dose. 2- Protection e.g. coated tablets, sealed ampules. 3- Protection from gastric juice. 4- Masking taste and odour. 5- Placement of drugs within body tissues. 6- Sustained release medication. 7- Controlled release.
The objective of present study was to document the requirements for manufacturing of semisolid dosage forms. These guidelines also brief about some issues associated with tools, strategies, critical process parameters and strategies of the manufacturing and validation processes specific to semisolid dosage forms. Studies about the effect of manufacturing processes and formulation excipients on.
Creams are semisolid dosage forms containing one or more drug substances dissolved or dispersed in a suitable base. The term has traditionally been applied to semisolids that possess a relatively fluid consistency formulated as either water-in-oil (e.g., Cold Cream) or oil-in-water (e.g., Fluocinolone Acetonide Cream) emulsions. However, more recently the term has been restricted to products.
Different semisolid dosage forms and various excipients used in pharmaceutical formulations are discussed. The current approach of the US Food Drug Administration for the classification of semisolid dosages is presented. The formation and formulation of emulsions are discussed in detail. The formulation of liposomes, one of the major drug-delivery systems used in pharmaceutical dosages, is.
Semisolid Dosage Forms. Semisolid Dosage Forms. Ointments, creams, and gels are semisolid dosage forms intended for topical application. They may be applied to the skin, placed on the surface of the eye, or used nasally, vaginally, or rectally. Most of these preparations are used for the effects of the therapeutic agents they contain. The unmediated ones are used for their physical effects as.
In semisolid preparations the resulting structures are very complex. In this review paper numerous examples of surfactants application in semisolid drug forms are presented with respective evaluation of surfactant type, and hydrophilic-lipophilic balance values. Keywords: surface phenomena, hydrophilic-lipophilic balance, surfactants, semi-solid pharmaceutical preparations 1. Introduction The.
SEMISOLID DOSAGE FORMS (a) Ointments:-Type of ointments, classification and selection of dermatological vehicles. Preparation and stability of ointments by the following processes: (i) Trituration, (ii) Fusion, (iii) Chemical reaction, (iv) emulsification. (b) Pastes: Differences between ointments and pastes. Bases of pastes. Preparation of pastes and their preservation. (c) Jellies: An.