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  Tablets by Tapamoy Chakraborty   A  tablet  (also known as a  pill ) is a  pharmaceutical  oral dosage form ( oral solid dosage , or OSD) or solid unit dosage form. Tablets may be defined as the solid unit dosage form of medicament or medicaments with suitable  excipients . It comprises a mixture of active substances and excipients, usually in  powder  form, pressed or compacted from a powder into a solid dose. Tablets are prepared either by molding or by  compression . The excipients can include  diluents ,  binders  or granulating agents,  glidants  (flow aids) and  lubricants  to ensure efficient tabletting;  disintegrants  to promote tablet break-up in the digestive tract; sweeteners or flavours to enhance taste; and pigments to make the tablets visually attractive or aid in visual identification of an unknown tablet. A polymer coating is often applied to make the tablet smo...