Antidepressant Comparison: Are Pristiq and Effexor the Same?
Does Pristiq Just Serve to Extend the Effexor Patent?
If you live in the US, you’ve probably seen all the commercials for the new and pastel-pink-coloured antidepressant Pristiq. (Yes, prescribed for depression.) Pristiq is new and has a huge marketing push behind it and is a selective serotonin norepinephrine reuptake inhibitor (SNRI) antidepressant. In other words, it’s an antidepressant that works on both serotonin and norepinephrine neurotransmitters. It is not the only antidepressant to do this, but SNRIs are a smaller class of drugs than those that just effect serotonin alone (like Prozac). (Although admittedly, there seems to be a suspicious number of SNRI antidepressants in development.)
Pristiq and Effexor Are Almost the Same Drug
What you might not know, is the same company that makes the drug Pristiq (Wyeth) also makes Effexor, which is an almost identical antidepressant, and Effexor has recently become available in generic form (Venlafaxine). Pristiq, O-desmethylvenlafaxine, is actually the main metabolite of Effexor, venlafaxine hydrochloride.
This means that if you take Effexor, your body breaks it down into Pristiq and other chemicals. Yes, Pristiq and Effexor are almost the same drug.
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