Drug Name Anabol-AMP

The body thus represents an open system wherein the actual drug concentration reflects the interplay of intake (ingestion) and egress (elimination).
As a prerequisite, the drug must have affinity for the carrier (blue triangle matching recess on “transport system”) and, when bound to the latter, be capable of being ferried across the membrane. Membrane passage via transport mechanisms is subject to competitive inhibition by another substance possessing similar affinity for the carrier.

 

The active group of L, S, P, and F (or their metabolites) resembles that of the physiological substrate of the enzyme (A). L and S are lactones that are rapidly absorbed by the enteral route, subjected to extensive first-pass extraction in the liver, and there hydrolyzed into active metabolites.
An altered position of aromatic hydroxyl groups (e. g. , in orciprenaline, fenoterol, or terbutaline) or their substitution (e. g. , salbutamol) protects against inactivation by COMT.