Tablets are classified according to their route of administration or function. The following are the 4 main Classification groups:
1. Tablets ingested orally
i) Compressed Tablets
ii) Multiple Compressed Tablets or compress coated Tablets
iii) Multilayered Tablets
iv) Sustained action Tablets
v) Enteric coated Tablets
vi) sugar coated Tablets
vii) Film coated Tablets
viii) Chewable tablets
2. Tablets used in oral cavity
i) Buccal Tablets
ii) Sublingual Tablets
iii) Lozenges or traches
iv) Dental cones
3. Tablets administered by other routes
i) Implantation Tablets
ii) Rectal Tablets (suppositories)
iii) Vaginal Tablets (Pessaries)
iii) Vaginal Tablets (Pessaries)
4. Tablets used to prepare solutions
i) Effervescent Tablets
ii) Dispensing Tablets
iii) Hypodermic Tablets
iv) Tablet triturates