Clients taking Paroxetine may experience withdrawal and continuation syndrome. To minimize symptoms, taper the medication over a period of 3 or more weeks.

Phenelzine is a monoamine oxidase inhibitor (MAOI). Drugs in this class work by inhibition of monoamine oxidase enzymes, the enzymes responsible for the break down of serotonin, dopamine, and adrenaline.

Zolpidem is a short acting nonbenzodiazepine hypnotic. It's actions are similar to benzodiazepine drugs in that it stimulates GABAa receptors at the same location as benzodiazepines. It is used in insomnia for initiating sleep, though it's short half life (3 hours) means it is not generally considered effective for maintaining sleep.

Fluoxetine is an example of a selective serotonin re-uptake inhibitor (SSRI). SSRI's limit the amount of serotonin that the presynaptic cell that secreted it, cat re-uptake. This increases the time and amount that serotonin is in the synaptic cleft, and bound to postsynaptic receptors, leading to anti-depressant properties. The other drugs are all antidepressants, but are sold under other names.

Clomipramine is a tricyclic antidepressant. Drugs in this class function primarily by blocking serotonin and norepinephrine transporters, resulting in an increase in the levels of these neurotransmitters in the synapse, and thus an increase in their effects due to staying bound to postsynaptic receptors for longer.

Trazodone is a serotonin antagonist and reuptake inhibitor (SARI). These drugs work by increasing the release and inhibiting the reuptake of serotonin in the synaptic space, thus increasing the effect of serotonin.

Aripiprazole is an atypical antipsychotic. It acts as a partial dopamine agonist and an agonist to multiple 5-HT (serotonin) receptors.

Quetiapine is classified as an atypical antipsychotic. Quetiapine is a powerful antihistamine and has pharmacological action at many receptor types: it is a serotonin, dopamine, and adrenergic antagonist.

Bupropion is an antidepressant used for smoking cessation. None of the other medications listed are used for smoking cessation.

Diazepam is a benzodiazepine. This class of drugs works by potentiating the effects of GABA, our primary inhibitory neurotransmitter, at the GABAa receptor.