A dosage unit is a specific amount of medication that is prescribed to a patient. A CAPLET is a type of dosage unit that is a compressed, coated tablet that is oval in shape and usually contains a single dose of medication. A rad is another type of dosage unit that is a round, flat tablet that is scored so it can be easily broken into two or more pieces. Lastly, a PILL is a dosage unit that is a small, solid, round object that is usually made up of a single dose of medication.