Prozac causes the neurotransmitter serotonin to remain at the site of the synapse longer than it normally would; Prozac therefore inhibits the process termed:

selective serotonin reuptake

Explanation:

Aka Fluoxetine also known as Prozac is called as selective serotonin reuptake inhibitor (SSRI) because it Prozac allows serotonin to stay longer in a neuron synapse after its release before re-firing. Prozac do not release the serotonin, it simply makes the surrounding environment suitable enough to allow it stay for a long period of time. It binds to the re-uptake proteins and prohibits the re uptake