This increases the body's normal response. These compounds have a similar, but slightly different binding shape . They latch onto the binding site but do not cause any response. This type of medicine blocks the body's natural response. One example of an antagonist is fluconazole, an antifungal medicine.
Most fungi are harmless to humans, but a few cause serious infections .
Fluconazole blocks an enzyme that is important to the membranes around fungal cells. As a result it stops fungi growing . Imagine a normal person has too much sugar in their blood.