Why coating of tablet is done? What are the different methods of coating?
Reasons for coating:
1. To mask unpleasant taste and odour.
2. To improve the appearance of tablets.
3. To prevent the medicament from atmospheric effects.
4. To control the site of action of drugs.
5. To produce the sustained release product.
Methods of tablet coating :
1. Sugar coating:
2. Film coating
3. Enteric coating.