Table of Contents
What are the types of tablet coating?
There are three main processes for tablet coating: sugar coating, film coating, and enteric coating.
What is the use of tablet coating?
Appearance: to change the color for branding purposes or other aesthetic reasons. Stability: to protect the active ingredient from moisture, light, and/or acidic environment of the stomach. Taste and/or odor masking: to provide an easy to swallow tablet without the bitter taste of many active ingredients.
What is the material used for tablet coating?
Hydroxy Propyl Methyl Cellulose (HPMC) HPMC is a polymer that is ideal for processes such as air suspension and pan spray coating due to its solubility in organic, gastric fluid and other liquid solvent matter.
What is sugar coating tablets?
Sugar coating is used in immediate release applications to mask unpleasant taste and odour of some drugs or to improve aesthetic qualities of the product. It should be understood that the coating process will add some time to the overall disintegration of the tablet and may impact drug dissolution.
What is compression coating tablets?
A compression-coated tablet is a system in which the entire surface of an inner core is completely surrounded by the coat and these coats prevent drug release from the core until the polymeric coat is entirely eroded, dissolved or removed (Aher et al., 2011).
What is sub coating?
Subcoating It involves the application of large quantities of sugar-coatings to the tablet core, significantly increasing the tablet weight by 50 – 100 %. Subcoating provides the rapid buildup necessary to round up the tablet edge.
What is different type of coating?
Coatings are varied, but primarily fall into three categories: Architectural, Industrial, and Special Purpose.
What is gelatin coated tablets?
G-tabs™ is a patent-pending technology for tablets coated with one or two-toned colour gelatin, printed or not printed, widely used to eliminate unpleasant odours and/or tastes, improve ease of swallowing, prevent counterfeiting; and much more.
Why are enteric coated tablets used?
An enteric coating resists dissolution under acidic conditions, but is freely soluble at the more basic conditions of the intestinal tract. Enteric coating may be used to protect acid-labile drugs or to avoid gastric distress induced by high concentrations of some drugs, such as aspirin.
What are different types of protective coatings?
Surface (or) chemical. conversion coating. (a) Chromate coating. (b) Phosphate coating. (c) Oxide coating.
Why is gelatin added to tablet?
Gelatin is widely used to create the shell for both hard and soft capsules, providing an effective means of protecting the contents from light, atmospheric oxygen, contamination and microbial growth as well as masking taste and odor. Hard capsules represent 75% of the gelatin capsule market.
Why is aspirin coated?
Enteric-coated aspirin is designed to resist dissolving and being absorbed in the stomach. As such, enteric-coated aspirin passes into the small intestine, where it’s absorbed into the bloodstream. The purported goal is to prevent stomach ulcers and bleeding that can sometimes occur with aspirin use.