Compressed tablets are the most popular dosage form for medicines in use today, accounting for approximately one third of all dosage forms. They are usually taken orally although may be administered via alternate methods.
Tablets contain a small amount of active substances mixed with other powders like sodium hydroxide that help the drug survive the acidic conditions of the digestive system. Other ingredients may assist drug uptake through things such as such as tablet absorbance into the blood or break-down within the body. These powders are compressed into a solid dose with a known quantity of active ingredient. Every pill is uniquely different aesthetically and can be marked in a number of ways to avoid counterfeiting.