3. Old stuff
          3.1. Old pharm stuff (pre 2009)
              3.1.3. Pharmacology
                  3.1.3.1. Pharmacology principles
                      3.1.3.1.2. Pharmacodynamics
                          3.1.3.1.2.2. Mechanism of drug actions
                              3.1.3.1.2.2.1. Receptors
 3.1.3.1.2.2.1.3. Receptor occupancy theory 

Receptor occupancy theory

[Ref: SH4:p22]

Traditionally...

  • The intensity of effect of a drug is proportional to the fraction of receptors occupied by the durg.
    --> Maximal drug effect occurs when all receptors are occupied.
  • Flaw: Does not account for antagonist or partial agonist.