 Tablet coating is a process by which a layer of material is applied to the surface of a tablet or other solid dosage form. It is done to provide a variety of benefits such as improving the appearance of the product providing protection from moisture masking bitter tastes and increasing the shelf life of the product conventional tablet coating methods include sugar coating film coating and enteric coating recent advancements have led to the development of new technologies that do not require solvents making them more environmentally friendly. These technologies include fluid bed coating hot mouth extrusion and spray drying. This article was authored by Deb Gopal Ganguly, Somya Deep Ghosh, Bubali Chakraborty and others.