The document discusses tablet coating, which involves applying a cover to the surface of tablets. Tablet coating serves objectives like controlling drug release. Materials used in tablet coating include film formers like HPMC and ethyl cellulose, plasticizers like castor oil and propylene glycol, solvents like isopropyl alcohol and methylene chloride, and colorants and opacifiers. The coating process involves spraying coating materials onto tablets in a coating pan and drying them. There are two main types of tablet coatings: film coating, which improves appearance and properties, and enteric coating, which does not dissolve in the acidic stomach but does in the intestine.

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Tablet Coating
Pharmaceutical
 Introduction
 Material Used in Tablet Coating
 Types of Tablet Coating
CONTENT
Tablet part-5Pharmaceutics

2. Rohit Kumar Trivedi | Assistant Professor | Pharmacy | +91-7895024949 | rohittrivedi321@gmail.com
Tablet Coating
Introduction
A process of applying cover on tablet surface.
Objectives
Control release of drug

3. Rohit Kumar Trivedi | Assistant Professor | Pharmacy | +91-7895024949 | rohittrivedi321@gmail.com
Tablet Coating
Materials Used in Tablet Coating
Tablet Coating
Materials
III. Plasticizers
II. Solvents
HPMC • Cellulose Acetate Phthalate
Polyethylene Glycol • Ethyl CelluloseI. Film Formers
IV. Colourants
V. Opacifiers
Isopropyl Alcohol • Methylene Chloride
Castor oil • Propylene Glycol
Glycerine • Surfactants
FD & C Colours • D & C Colours
Iron Oxide • Caramel
Titanium Dioxide • Talc • Aluminum Silicate

4. Tablet Coating
Coating Process
Rohit Kumar Trivedi | Assistant Professor | Pharmacy | +91-7895024949 | rohittrivedi321@gmail.com
Uncoated Tablets
Coated TabletsTablet Coating Machine
(Coating Pan)
Spraying with Drying

5. Tablet Coating
Types
Rohit Kumar Trivedi | Assistant Professor | Pharmacy | +91-7895024949 | rohittrivedi321@gmail.com
Tablet Coating
Types
Enteric Coating
 improve product appearance
Thin film of polymer
Film Coating
 Not dissolves drug in acidic medium of stomach
 Dissolves in Intestine
 organoleptic properties
 facilitate swallowing
 modify or delay drug release

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