Bioavailability

Definition of Bioavailability

Bioavailability refers to the amount and speed at which a drug or active substance is absorbed and becomes available for its action in the body after administration.

It is an important parameter in pharmacology, as it determines the effectiveness and the speed with which a medication can produce its therapeutic effect.

Bioavailability can be affected by various factors, such as:

• The method of drug administration
• The presence of food in the gastrointestinal tract
• Metabolism in the liver
• The elimination of the drug from the body