1) Antidiuretic drug 2) Medicament 3) Medication 4) Medicinal drug 5) Medicine 1) Lypressin 
An antidiuretic is an agent or drug that, administered to an organism, helps control body water balance by reducing urination, opposing diuresis. ==Uses== Antidiuretics are the drugs that reduce urine volume, particularly in diabetes insipidus (DI) which is their primary indication. ==Examples== These are classified as: ...
suppressing the rate of urine formation.
An agent that reduces the output of urine.
Suppressing the rate of urine formation. ... (18 Nov 1997) ... 
(an″te-) (an″ti-di″u-ret´ik) causing suppression of diuresis (urine formation). an agent that so acts.
Type: Term Pronunciation: an′tē-dī-yū-ret′ik Definitions: 1. An agent that reduces output of urine.
[n] - a drug that limits the formation of urine
antidiuretic drug noun a drug that limits the formation of urine