Faithful adherence by the patient to the prescriber's instructions.

Dosage form

The form of the completed pharmaceutical product, for example, a tablet, capsule, elixir, suppository.


Any substance in a pharmaceutical product that is used to modify or explore physiological systems or pathological states for the benefit of the recipient.

Drug formulation

The composition of a dosage form, including the characteristics of its raw materials and the operations required to process it.

Drug utilization

The marketing, distribution, prescription, and use of drugs in a society, with special emphasis on the resulting medical, social, and economic consequences.


The ability of a drug to produce the purported effect as determined by scientific methods.

Exclusion Criterion

A standard or rule for judging the shutting out or disconnection from the main part.

Pharmaceutical product

A dosage form containing one or more drugs, along with other substances included during the manufacturing process.

Serious event

Any adverse event that is fatal, life-threatening, permanently or significantly disabling, requires or prolongs hospitalization, congenital anomaly, or requires intervention to prevent permanent impairment or damage.

Therapeutic equivalence

Pharmaceutical products that, when administered to the same individuals in the same regimen, will provide essential the same efficacy and toxicity.


The pharmacological term indicating a waning effect with the continuing use of the same dose of a drug. The ability to endure or be less responsive to a stimulus, especially over a period of continued exposure.

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