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Mixed excipients may be either liquid or solid. Excipients are an integral part of any pharmaceutical product necessary for manufacturing as well as performance. The National Formulary. 6. (1990). Nontoxic and acceptable by FDA or regulatory agencies. The microcapsules thus formed range dimensionally between 3 – 800 µm in diameter with about 10 – 90 % w/w core. Any film-coating formulation consist mostly of a polymer, colorant, plasticizer, and solvent (or vehicle). Sweetening agents are the chemical substances that added to either mask the unpleasant taste or …, Your email address will not be published. They include: The process of sugar coating, which has its origins in the confectionery industry is perhaps one of the oldest pharmaceutical processes still in existence. Flavoring agents are consumed orally and appreciated by both smell and taste while fragrances are only for external use and appreciated only by smell. Required fields are marked *. Types and Functionality of Tablet Coating. The coats used range from the traditional sugar coating to the present polymer and polysaccharides based coats. Talc (asbestos-free) also is used as a glidant. They may not be contraindicated among them. They are vital excipients for modified-release tablets. British Pharmacopoeia Commission. According to British Pharmacopeia, 2009, when a tablet is presented as coated formulations, where justified and authorized, it may be necessary to remove the coating before performing a test described in the monograph. Rockville, Md. Removal of coating is not permitted where it affects the functionality of the product, for example in dissolution or disintegration tests. The excipients are several types such as Binders, Diluents/Fillers, Disintegrants, Lubricants, Glidant, Wetting agents, Solvents, Suspending agents, Emulsifiers, Antioxidant, Preservatives, Sweeteners, Stabilizing, Coating Agent, Surfactant, Coloring agent, and Flavoring agents. To control the site of action of drugs e.g., colon delivery, To avoid inactivation of drug in the stomach e.g., enteric coating. Where justified, uniformity of mass or uniformity of content of coated tablets other than film-coated tablets may be ensured by control of the core. To protect the drug from the external environment (particularly air, moisture, and light) in order to improve stability. 4. Also, excipients for tablets are known as auxiliary substances. Here, compendial means the excipient is indexed in the pharmacopoeia. It binds to receptors on the tongue that are responsible for the sensation of sweetness. 1. 21st edition. Before compaction, liquid lubricants may be absorbed into the tablet granule matrix. 336 Views. The United States Pharmacopeia. An excipient may be used in diverse ways or for diverse purposes in a pharmaceutical preparation and hence may require different material attributes to achieve the desired performance. London: Pharmaceutical Press; 2006. For example, Lactose as a diluent and Magnesium Stearate as a lubricant etc. Example of Super-disintegrant are Crospovidone (commercial name- Kollidon CL) [cross linked povidone], Croscarmellose Sodium (Trade name Ac-Di-Sol, Primellose) [cross-linked cellulose], Sodium Starch Glycolate (Commercial name Primogel, Explotab) [cross-linked starch] etc. Diluents are vital excipients for tablets with a small weight. Sodium Starch Glycolate (Commercial name Primogel, Explotab) (2-8%, Optimum concentration is about 4%, although 2% is sufficient in many cases). Binders are agents used to impart cohesive qualities to the powdered material are referred to as binders or granulators [6]. These therapeutically inactive ingredients of pharmaceutical preparation are known as excipients. To enhance ease of swallowing large dosage forms. Compression coating is essentially a dry process and thus may be suitable for coating tablets containing heat and moisture liable drug(s) such as aspirin and penicillins. Tablets to be coated should normally be compressed with deep concave punches and die sets. British Pharmacopoeia 2016. Notify me of follow-up comments by email. Sucrose is the standard for sweetness. Microencapsulation differs from film coating only in the size of the particles to be coated and the methods by which this is accomplished. An excipient must be physiologically inert. The safety of pharmaceutical excipients” Farmaco. Tablets that do not meet these requirements create a lot of problems to the formulation scientist engaged in coating of the dosage form. Sweeteners are vital excipients for chewable tablets, lozenges, oral disintegrating tablets, dispersible tablets, oral solutions, emulsion, and oral suspensions. B. : United States Pharmacopeial Convention, Inc.; 1979. They must be free from dust to ensure uniformly smooth coating. Although traditionally a less popular process, compression coating has gained increased interest in recent years as a means of creating specialized modified-release products. Sustained Release – Colorcon manufactures and represents extended release coating systems derived from one of the most popular and regulatory accepted polymers in the pharmaceutical industry, ethylcellulose. 3. Film coating. Physically and chemically stable by themselves and in combination with drug(s) or other excipients in a formulation. Miscellaneous coating solution components. Any film-coating formulation consist mostly of a polymer, colorant, plasticizer, and solvent (or vehicle). According to USP, Lubricants are substances that typically are used to reduce the frictional forces between particles and between particles and metal-contact surfaces of manufacturing equipment such as tablet punches and dies used in the manufacture of solid dosage forms. Colorcon film coatings impart mechanical integrity, color, gloss, pearlescence or moisture protection to create an immediate release tablet that is both effective and easily recognized by consumers. Film Coated Tablets. It should have accepted organoleptic properties such as colorless or white to off-white color, odorless. 2003; 58 (8)541-550. By continuing to use this website you are giving consent to cookies being used. Coating materials are vital excipients for tablets but not for all tablets. Medicinal uses of Neem (Azadirachta indica), Difference between Drug Design and Drug Development, Difference between generic and brand name drugs, Generic name of drugs vs Brand name of Drugs, Generic medicine vs Brand name medicine, How to improve immune system to minimize the risk of infection. According to USP, Disintegrants are functional components that are added to formulations to promote rapid disintegration into smaller units and to allow a drug substance to dissolve more rapidly [3]. It is either compendial or non-compendial inactive substances. Tablet coating machines also called pan coating machine or tablet coating pan are used to coat the surface of tablets with a thin coating of film. Film coating involves the deposition of a thin layer of film-forming polymeric material on the tablet... 3.

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