Dosage is an established regimen for the use of a medicinal product, which determines a single or daily dose, frequency, duration, and, if necessary, the method of administration. Dosage depends on the properties of the drug, indications, age, body weight, health status, and other individual characteristics of a person.
Compliance with the prescribed dosage is an important condition for the effectiveness and safety of treatment. A spontaneous change in the dose, frequency, or duration of use may reduce the effectiveness of the drug or increase the risk of adverse reactions. The amount of the drug used at one time is called the dose.