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January 9, 2026

Pristiq For Anxiety

Ami G. Risinger

Clinically Reviewed by Ami G. Risinger, LPC-MHSP

Pristiq is most commonly prescribed to treat people who have depression. Can you also use Pristiq for anxiety?

Contact Time Wellness Centers today to learn more about our anxiety treatment in Tennessee.

What Is Pristiq?

Pristiq is the brand name of a prescription medication that contains desvenlafaxine. It was approved by the U.S. Food and Drug Administration (FDA) in 2008 to treat adults who have major depressive disorder (MDD).

Pristiq is typically taken orally in tablet form, with a recommended dose of 50 mg per day.

How Does Pristiq Work?

Pristiq is a serotonin-norepinephrine reuptake inhibitor, or SNRI. Medications in this category artificially increase the amount of two neurotransmitters in a person’s system:

  • Serotonin is a brain chemical that is involved with mood, reward, learning, motivation, sexual desire, and the sleep/wake cycle.
  • Norepinephrine influences arousal, attention, focus, and certain cognitive functions. It is a key part of the body’s “fight or flight” response to perceived threats.

Serotonin and norepinephrine carry messages through the central nervous system (CNS). Here’s how that usually happens:

  • Nerve cells release these chemicals into the synapses, or minute gaps, that separate them from other nerve cells.
  • Once the chemicals have delivered their message, transporter proteins return them to their originating nerve cell.
  • The originating nerve cells reabsorb them and store them for later reuse.

Pristiq interrupts the process through which serotonin and norepinephrine are transported back to their originating nerve cells. This prevents their reabsorption, which increases the amount of both chemicals in synapses throughout a person’s (CNS).

For some people, boosted levels of available serotonin and norepinephrine have the effect of alleviating depression and certain other mental health concerns.

Can You Take Pristiq for Anxiety?

Today, treating adults with MDD remains the only FDA-approved use of Pristiq. But that doesn’t mean all other uses of the medication are prohibited.

In the U.S., physicians frequently prescribe medications on what’s known as an “off-label” basis. This means that they use the meds to treat disorders or symptoms that have not been approved by the FDA, if research indicates that they can be helpful.

So how does this apply to the topic of today’s post? Can you take Pristiq for anxiety? 

Yes, anxiety is one of the more common off-label uses of Pristiq. It has been used to treat several anxiety disorders, including:

  • Generalized anxiety disorder
  • Social anxiety disorder (social phobia)
  • Panic disorder

Multiple research efforts have found that Pristiq can be helpful at reducing anxiety symptoms, especially among people who have been living with both major depressive disorder and co-occurring anxiety. For example:

  • Published by the journal CNS Spectrums in March 2010, a review of pooled data from nine double-blind trials found that desvenlafaxine was linked with a “significantly greater improvement in anxiety symptoms” than placebo in patients with MDD.
  • A July-August 2014 study in the Indian Journal of Pharmacology determined that desvenlafaxine produced “statistically significant” improvements in anxiety symptoms among participants who also had major depressive disorder.
  • In March 2025, a study in the journal Pharmacology Biochemistry and Behavior reported that GAD patients who received low-dose desvenlafaxine in combination with mindfulness-based cognitive behavioral therapy (MBCT) experienced greater improvements than did participants whose treatment involved escitalopram and MBCT.  

Does Pristiq Cause Side Effects?

As is the case with virtually every other prescription medication, Pristiq has been linked with a variety of adverse effects.

Among the drug’s more common side effects are:

  • Dizziness
  • Drowsiness
  • Appetite loss
  • Nausea
  • Constipation
  • Insomnia
  • Sexual dysfunction

Less common, but potentially more serious, effects include:

  • Agitation, anger, and/or aggressiveness
  • Racing heart rate
  • Respiratory distress
  • Hyperthermia (high body temperature)
  • Hypertension (high blood pressure)
  • Muscle tremors or stiffness
  • Fainting
  • Seizure
  • Hallucinations
  • Thoughts of suicide

Other Medications for Anxiety

Pristiq is by no means the only prescription mental health medication that can help people with anxiety. Other meds that are often prescribed for this purpose include:

  • Benzodiazepines such as alprazolam (Xanax) and lorazepam (Ativan)
  • Selective serotonin reuptake inhibitors (SSRIs) such as fluoxetine (Prozac), paroxetine (Paxil), and escitalopram (Lexapro)
  • Other SNRIs such as duloxetine (Cymbalta) and venlafaxine (Effexor)

Types of Therapy for Anxiety

While prescription medication can reduce or eliminate many anxiety symptoms, meds don’t work for everyone. Also, even effective medications can’t always address the full impact that anxiety has on a person’s life. This is why therapy can be such a vital component of treatment for anxiety disorders.

Depending on each person’s unique circumstances, they may benefit from services such as:

If a person’s struggles with anxiety are related to untreated trauma, their treatment plan may also include eye movement desensitization and reprocessing (EMDR) therapy and other trauma-focused services.

To be clear, there is no single medication, therapy, or course of care that will be helpful to everyone who has been living with anxiety. Services that have a life-changing impact for one person many offer little to no benefit to another.

This highlights the importance of finding a provider who will thoroughly assess your history and symptoms, then develop a personalized plan just for you. 

Explore Your Anxiety Treatment Options in Tennessee

If using Pristiq for anxiety hasn’t been as effective as you’d hoped, or if you’re seeking a more thorough approach to treat this condition, Time Wellness Tennessee may be the ideal place for you.

Our treatment center in Chattanooga, TN, offers a full continuum of customized mental health services. Adults who have anxiety, other mental health concerns, and co-occurring addictions may receive care at the residential/inpatient, partial hospitalization (PHP), and intensive outpatient (IOP) levels.

To learn more about how we can help you or a loved one, or to schedule a free assessment, please visit our Admissions page or call us today.