How does desvenlafaxine (Pristiq) work?

The antidepressant desvenlafaxine (Pristiq) works by affecting the neurotransmitters norepinepherine and serotonin in the brain. These neurotransmitters are known to be linked to mood and depression. Desvenlafaxine is in the drug class called the selective serotonin and norepinephrine reuptake inhibitors. Since it comes in an extended release (long-acting) tablet, it is usually taken by mouth only once daily.

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