Types of tablets

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Pharmaceutical Tablets Types

1.4 Tablet Types

What will you gain?

1.4.1 Oral tablets for ingestion

1.4.2 Tablets used in the oral cavity

1.4.3 Tablets administered by other routes

1.4.4 Tablets used to prepare solution

With advancement in technology and increase in awareness towards modification in standard tablet to achieve better acceptability as well as bioavailability, newer and more efficient tablet dosage forms are being developed. The main reasons behind formulation of different types of tablets are to create a delivery system that is relatively simple and inexpensive to manufacture, provide the dosage form that is convenient from patient's perspective and utilize an approach that is unlikely to add complexity during regulatory approval process. To understand each dosage form, tablets here are classified by their route of administration and by the type of drug delivery system they represent within that route.

Table.1. Various Types Of Tablets


ORAL TABLETS FOR INGESTION Standard compressed tablets Multiple compressed tablets

I. Compression coated tablet

II. Layered tablet

III. Inlay tablet Modified Release tablet Delayed action tablet Targeted tablet

I. Floating tablet

II. Colon targeting tablet Chewable tablet Dispersible tablet


TABLETS USED IN THE ORAL CAVITY Lozenges and troches Sublingual tablet Buccal tablet Dental cones Mouth dissolved tablet




TABLETS USED TO PREPARE SOLUTION Effervescent tablet Hypodermic tablet Soluble tablet

Key Phrases

O When two or more active pharmaceutical ingredients are needed to be administered simultaneously and they are incompatible, the best option for the formulation pharmacist would be to formulate multilayered tablet.

O When we need to release the medicament slowly for long time duration after administration of a single tablet we go for modified release formulation.

O When we need to release the API at a specific site in the elementary tract, targeted drug delivery is a preferred option.

O Dispersible tablets disintegrate either rapidly in water, to form a stabilized suspension, or disperse instantaneously in the mouth to be swallowed without the aid of water

O Sublingual tablet is designed to dissolve in small quantity of saliva and used when immediate action within few minutes is desired.

O Buccal tablet is most often used when replacement hormonal therapy is to be administered.

O Implants are inserted into subcutaneous tissue by surgical procedures where they are very slowly absorbed over a period of a month or a year.

About the Author

Dr.Mukesh Gohel's picture
Author: Dr.Mukesh Gohel

Dr. Mukesh Gohel is principal, professor at the LMCP, Ahmedabad served in academics for more than 40 years. He provides training in leading pharmaceutical industries in the areas of Design of Experiments and Quality by Design. His current areas of interest are direct compression and improvement of drug dissolution.

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