A tablet is usually a compressed preparation that contains:
80% of fillers, disintegrants, lubricants, glidants, and binders; and
The disintegration time can be modified for a rapid effect or for sustained release.
Special coatings can make the tablet resistant to the stomach acids such that it only disintegrates in the duodenum as a result of enzyme action or alkaline pH.
Pharma Process Validation
Pills can be coated with sugar, varnish, or wax to diguise the taste.