Pristiq (desvenlafaxine) is an antidepressant in a group of drugs called selective serotonin and norepinephrine reuptake inhibitors (SNRIs). Desvenlafaxine affects chemicals in the brain that be unbalanced in people with depression.

Pristiq is used to treat major depressive disorder.

Pristiq may also be used for purposes not listed in this medication guide.

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  • Pristiq
  • Note: This page contains side effects data for the generic drug desvenlafaxine. It is possible that some of the dosage forms included below may not apply to the brand name Pristiq.

    Common side effects of Pristiq include insomnia, dizziness, drowsiness, constipation, nausea, decreased appetite, hyperhidrosis, and xerostomia. Other side effects include anxiety, tremor, blurred vision, vertigo, mydriasis, vomiting, chills, yawning, and abnormal dreams. See below for a comprehensive list of adverse effects.
  • Pristiq (desvenlafaxine succinate) tablet, extended release General dosage information for the active ingredient contained in Pristiq: Desvenlafaxine (oral tablet, extended release) Please confirm that the medication forms on the dosage document(s) above are relevant for the specific drug you are interested in.