PTSD Medication: Types, Efficacy, and Side Effects

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Post-traumatic stress disorder (PTSD) is a mental disorder that can occur after a person has experienced a traumatic event. It leads to symptoms that include intrusive memories, flashbacks, hypervigilance, anxiety, and nightmares. The condition is typically treated with certain PTSD medications and therapy.

Two medications are currently FDA-approved to treat PTSD: Zoloft (sertraline) and Paxil (paroxetine). However, other medications are also prescribed off-label to help relieve mood and anxiety symptoms.

Types of PTSD medications include:

  • Selective serotonin reuptake inhibitors (SSRIs)
  • Serotonin-norepinephrine reuptake inhibitors (SNRIs)
  • Alpha-1 blockers
  • Mood stabilizers

This article explores PTSD medications, how they work, the symptoms they can help, and potential side effects. It also discusses other treatments that can help people manage their condition.


SSRIs help relieve specific symptoms of PTSD by increasing serotonin levels in the brain. Serotonin is a chemical messenger that plays a role in mood and sleep.

Because PTSD can disrupt how chemical signals are sent throughout the brain and body, increasing serotonin levels can potentially benefit from symptoms that impact mood, anxiety, and sleep. 

SSRIs that are often prescribed to treat PTSD include:

Zoloft is one of the most commonly prescribed PTSD medications. Research has found that it is well-tolerated and effective, reducing symptoms in more than half of the people who take it.

Studies have shown that Paxil can also be effective in reducing PTSD symptoms. Prozac is sometimes used as an off-label treatment, although some evidence indicates it may be less effective.

Side Effects of SSRIs

While SSRIs are safe and generally well-tolerated, they do have the potential to cause unwanted side effects. Some of the most common side effects associated with SSRI medications are:

  • Decreased appetite
  • Diarrhea
  • Drowsiness
  • Dry mouth 
  • Insomnia
  • Nausea
  • Upset stomach
  • Sexual side effects


As the name suggests, SNRIs inhibit the reuptake of the neurotransmitters serotonin and norepinephrine. Norepinephrine is a chemical that acts as a hormone and neurotransmitter, playing an essential role in the body's fight-or-flight stress response. By increasing levels of serotonin and norepinephrine in the brain, SNRIs help with mood and anxiety symptoms of PTSD. 

Effexor (venlafaxine) is the most commonly prescribed SNRI PTSD medication. In clinical trials, venlafaxine was shown to reduce PTSD symptoms by more than 50% compared to a 37% reduction in people taking a placebo.

Side Effects of SSRIs

SNRIs can also lead to several different side effects. The most common of these include:

  • Dry mouth
  • Drowsiness
  • Headache
  • Problems sleeping
  • Sexual problems
  • Sweating

Anti-Anxiety Medications

Anti-anxiety medications are sometimes prescribed to help people manage symptoms of anxiety. These medications increase the amount of GABA that binds to the central nervous system (CNS) receptors.

GABA is an inhibitory receptor, so increasing its actions causes people to feel more relaxed, sedated, and sleepy.

A few types of anti-anxiety drugs that may be used for PTSD include:

Side Effects of Anti-Anxiety Medications

Anti-anxiety medications can cause unwanted side effects such as:

  • Blurred vision
  • Confusion
  • Dizziness
  • Fatigue
  • Headaches
  • Memory problems

These medications belong to a class of drugs known as benzodiazepines. While they can help manage acute anxiety, they can also be habit-forming. They are classified as Schedule IV medications because they risk producing psychological and physical addiction. When taken for periods longer than two to four weeks, they can produce dependence and/or abuse.

If you have been taking these anti-anxiety medications for a while may experience withdrawal if you stop taking them suddenly.

Alpha-1 Blockers

Alpha-1 blockers are medications that act as alpha-adrenergic receptor agonists. They affect alpha receptors in the CNS, which helps inhibit the body's stress response. These medications are primarily prescribed to help improve sleep and reduce nightmares, but they may also help improve other PTSD symptoms as well.

The two alpha-1 blocker medications that are primarily prescribed for PTSD are:

  • Cardura (doxazosin)
  • Minipress (prazosin)

Side Effects of Alpha-1 Blockers

These medications can also produce side effects that include:

  • Fatigue
  • Headache
  • Joint pain
  • Muscle pain
  • Runny nose
  • Vision changes

Mood Stabilizers

Mood stabilizers may sometimes be prescribed for PTSD if other first-line treatments are ineffective or do not provide sufficient relief. These medications are typically utilized to treat bipolar disorder and work to regulate mood and balance emotions, which may help people better manage some symptoms of PTSD.

Mood-stabilizing medications may include lithium, antipsychotics, and anticonvulsants. Specific kinds that might be prescribed for PTSD include:

  • Abilify (aripiprazole)
  • Depakote (valproate)
  • Geodon (ziprasidone)
  • Lamictal (lamotrigine)
  • Seroquel (quetiapine)
  • Zyprexa (olanzapine)

Mood stabilizers are generally used along with other treatments for PTSD, such as other medications and therapy. They may also be prescribed for people with co-occurring bipolar disorder or borderline personality disorder (BPD).

Side Effects of Mood Stabilizers

Like other medications, mood stabilizers can lead to a range of side effects. Those that are most common include:

  • Diarrhea
  • Drowsiness
  • Fatigue
  • Headache
  • Nausea
  • Rapid heartbeat
  • Weight gain

Other Ways to Manage PTSD

Medications can be an essential part of PTSD treatment, but they are often most effective when utilized as part of a comprehensive plan that include psychotherapy and social support. Other ways to manage PTSD include:

Cognitive-Behavioral Therapy (CBT)

CBT is the treatment strongly recommended by the American Psychological Association for PTSD. This approach to treatment focuses on helping people change unhelpful thoughts related to their trauma.

The APA also suggests that specific forms of CBT can be beneficial for dealing with PTSD symptoms. These include cognitive processing therapy, cognitive therapy, and exposure therapy.

Eye Movement Desensitization and Reprocessing (EMDR)

EMDR is a type of psychotherapy that uses bilateral eye movements to help people who have experienced trauma process difficult memories, emotions, and thoughts.

During this treatment, people focus on movements or sounds while thinking about the upsetting memory. While how and why it works are not entirely clear, evidence indicates that it can be an effective treatment that helps people process their trauma and heal.

Lifestyle Changes

In addition to PTSD medication and psychotherapy, lifestyle modifications can also support your well-being and trauma recovery.

Some helpful strategies:

  • Join a PTSD support group: Talking to other trauma survivors can be a way to share your experiences, learn from others, and gain valuable emotional support.
  • Connect with friends and family: Having social support can be critical for people with PTSD. Research indicates that people who have support as they receive treatment for their condition experience more significant improvements in their symptoms.
  • Stay active: People who get regular exercise appear to cope better than those who don't. Exercise is linked to fewer PTSD symptoms, less depression, and better sleep.

Psychedelic Therapy

More recently, researchers are also exploring the use of psychedelic therapy in treating PTSD. Studies suggest that ketamine infusion therapy and MDMA-assisted therapy show promise in helping people recover from traumatic experiences. However, scientists are still exploring how to best utilize these substances in treatment, so more research is needed.


Medication can be helpful in the treatment of PTSD, but it is often most effective when used along with trauma-focused talk therapy. The PTSD medications that are most frequently prescribed are Zoloft (sertraline), Paxil (paroxetine), Prozac (fluoxetine), and Effexor (venlafaxine). Zoloft and Paxil are FDA-approved for treating PTSD, but other medications are often prescribed off-label depending on an individual’s specific needs.

PTSD Medications
 Brand Name  Generic Type  What It Does
Ativan lorazepam Anti-anxiety Increases GABA levels in the brain to inhibit anxiety
Cardura doxazosin Alpha-1 blocker Improves sleep and helps reduce nightmares
Effexor venlafaxine SNRI Increases serotonin and norepinephrine levels to improve mood and reduce anxiety
Klonopin clonazepam Anti-anxiety Acts as a sedative to help reduce anxiety levels
Minipress prazosin Alpha-1 blocker Blocks a norepinephrine receptor and helps reduce nightmares
Paxil paroxetine SSRI Increases serotonin levels and helps improve mood
Prozac fluoxetine SSRI Increases serotonin levels and helps improve mood
 Valium diazepam Anti-anxiety Helps people feel more relaxed by increasing GABA levels
Xanax alprazolam Anti-anxiety Increases levels of the inhibitory neurotransmitter GABA to induce relaxation
Zoloft sertraline SSRI Increases serotonin levels to help regulate mood

A Word From Verywell

Post-traumatic stress disorder is a serious condition that can develop after a person has experienced a traumatic event. If you are experiencing symptoms of PTSD, talk to your doctor or mental health professional about your treatment options. Talk therapy is often the first-line choice, but medication can also be an important part of your recovery, depending on your symptoms and needs.

If you or a loved one are struggling with PTSD, contact the Substance Abuse and Mental Health Services Administration (SAMHSA) National Helpline at 1-800-662-4357 for information on support and treatment facilities in your area.

For more mental health resources, see our National Helpline Database.

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Verywell Mind uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
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By Kendra Cherry
Kendra Cherry, MS, is the author of the "Everything Psychology Book (2nd Edition)" and has written thousands of articles on diverse psychology topics. Kendra holds a Master of Science degree in education from Boise State University with a primary research interest in educational psychology and a Bachelor of Science in psychology from Idaho State University with additional coursework in substance use and case management.