Modern tablet coatings are typically film coatings, flexible FILM COATING  It is the process of polymeric solution to bring a uniform film. The process involves the deposition of aqueous sugar solutions onto the surface of the core tablet. a fast-release outer coat with a prolonged-release inner core. The process may sometimes result in various coating defects like chipping, cracking etc. (2014). Tablet film coating is a technology-driven process, and the evolution of coated dosage forms depends on advancements in coating technology, equipment, analytical techniques, and coating materials. The coated formulations are tamper-evident and can be designed with different colors for branding purposes. 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. An alternative is the Press-fit Geltabs system, which uses a high-gloss gelatin capsule shell to encapsulate a denser caplet formulation. Film coating of tablets was introduced in the 1950s as an improvement on the traditional sugar coating process. Sugar coating involves many steps and in some cases elaborate equipment. Tablet Coating is a process by which an essentially dry, outer layer of coating material is applied to the surface of a dosage form in order to confer specific benefits over uncoated variety. The coating can be specially formulated to regulate how fast the tablet dissolves and where the active drugs are to be absorbed into the body after ingestion. To facilitate rapid identification of a product by the manufacturer, the dispensing pharmacist and the patient. The coats used range from the traditional sugar coating to the present polymer and polysaccharides based coats. Film Formers or Polymers. The thickness of such a coating is usually between 20-100 µm. Complete and uniform coating of corners and adaptability of this method to such relatively nonconductive substrates as pharmaceuticals are limited. Any film-coating formulation consist mostly of a polymer, colorant, plasticizer, and solvent (or vehicle). (1990). Coating is a process by which an essentially dry, outer layer of coating material is applied to the surface of a dosage form in order to confer specific benefits that broadly ranges from facilitating product identification to modifying drug release from the dosage form. financial expense. Coating materials. The procedure of coating tablets is a complex process that results in the forming of a thin layer around the tablet. This is usually achieved using a specially designed tablet press such as Drycota (Manesty) and Prescota (Killian). The steps involved in the sugar coating process may vary from manufacturer to manufacturer. Visit our, Core requirements for successful tablet coating, Classification and Types of Tablet Coating Equipment, Quality Control and Evaluation Parameters for Coated Tablets, Recent Advancement in Tablet Coating Technology. Home Profile Product Contact Feedback. LYCOAT® is a film forming polymer, specifically developed for aqueous film coating for immediate release. B. 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. The microcapsules thus formed range dimensionally between 3 – 800 µm in diameter with about 10 – 90 % w/w core. A good number of tablets marketed today are coated for a number of reasons, the most important of which is controlling the release profiles. TYPICAL OPTICAL COATING MATERIALS CATEGORIZED BY SPECTRAL REGION AND REFRACTIVE INDEX INCLUDE PURE FORMULATIONS AND NOT MIXTURES. Nontoxic and acceptable by FDA or regulatory agencies. Coating materials are vital excipients for tablets but not for all tablets. Tablets that are compressed are often coated with layer of sugar that may be coloured or uncoloured depending on the purpose of the tablet. Regulations, Guidelines and Clinical Trials, Advantages and Disadvantages of Pharmaceutical Emulsions, Problems Encountered During Trituration and Possible Solutions, Mechanisms Involved in the Mixing of Pharmaceutical Powders, Mixing of Pharmaceutical Powders in Small-Scale Operations, Advancements in Pharmaceutical Suspensions and Their Patents, 7 Common Mistakes to Avoid When Borrowing Money for Your Business, Ways to Create More And More Consistent Performers, List of Pharmaceutical Companies in Belarus, Roles and Responsibilities of a Finance Department in a Pharmaceutical Industry, National Agency for Food & Drugs Admin & Control, Journal of Pharmaceutical Development and Industrial Pharmacy, To mask the bitter taste and unpleasant odour of some drugs, To improve product appearance for aesthetic or commercial purposes (aiding in brand identification). 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