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Medication for PTSD: what you need to know

Medication can be a valuable part of the treatment process for PTSD, as it can reduce distressing symptoms and make it easier to engage with therapy.

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Page last updated:
Written by: Anna Drescher
Mental health specialist copywriter
Clinically reviewed by: Dr Tanushree Sarma
Consultant Psychiatrist at Priory Hospital Chelmsford

Medication can play a valuable role in treating post-traumatic stress disorder (PTSD). Although trauma-focused psychotherapy or EMDR (eye movement desensitisation and reprocessing) is often the primary approach, medication can reduce distressing symptoms and make it easier to engage in therapy and manage daily life. 

Purpose of medication in PTSD treatment

Medication is often an important part of PTSD treatment but it’s rarely the only approach used. It tends to be part of a broader recovery toolkit that usually also involves therapy, social support and self-care. 

Creating your treatment plan for PTSD should be collaborative and tailored to your needs. Therefore, taking medication should also be a shared decision between you and your healthcare provider, based on your preferences, medical history and what feels right for you. 

Typically, medication is prescribed:

  • To reduce symptoms of PTSD such as hyperarousal, flashbacks and nightmares, depressed mood, anxiety or sleep disturbances
  • When the symptoms make it difficult to engage effectively in therapy and function in daily life and relationships
  • When PTSD symptoms are severe or long-lasting 
  • As an alternative treatment if a person is unable or unwilling to start therapy 
  • When there are co-occurring mental health conditions, such as depression or suicidal thoughts 
  • As a supportive measure while waiting for therapy, especially when access is delayed – this is a common approach and not a sign that therapy has been ruled out 

What works for one person may not work for another – medication can be effective for some, while others prefer to manage their symptoms through therapy alone. The most important thing is that you feel informed and supported in whatever path you choose. 

Benefits of medication 

Treatment is a process, and while medication isn’t a cure for PTSD, it can be one step towards relief and recovery. In many cases, medication can offer enough relief to help you engage in therapy as it can significantly reduce distressing symptoms. 

It can also help ease specific symptom clusters, including:

  • Hyperarousal: medication can reduce the feeling of being constantly on edge (being jumpy, overly alert or easily startled). It helps to calm the nervous system and make everyday life feel more manageable
  • Re-experiencing the trauma: when people feel like they are transported back to the scene of the trauma, and experience flashbacks and nightmares. Medications help reduce these symptoms 
  • Sleep problems: it’s common to struggle to fall asleep, stay asleep, or experience vivid nightmares. Some medication can improve sleep quality, reduce nightmares and support more restful sleep
  • Low mood and anxiety: antidepressants can lift depressed mood and help ease persistent anxiety, which are common in PTSD
  • Panic attacks, irritability and poor concentration: medication can help reduce panic symptoms and irritability, improve emotional regulation and help you to think more clearly 
  • Co-occurring conditions: many people with PTSD also experience other mental health issues, such as depression and anxiety disorders. The right medication can provide broader support and address these overlapping symptoms

Commonly prescribed medications

Below is an overview of some of the most commonly prescribed medications for PTSD, how they work and why they might be chosen. The aim of medication is to reduce symptoms and allow people to function better and engage in therapy - not to ‘erase’ trauma.

Remember that not every medication is right for everyone, and treatment decisions are based on symptoms, other health conditions and personal preferences.

Name

Type of medication

Treatment uses

Sertraline (Lustral)

Antidepressant – selective serotonin reuptake inhibitor (SSRI)Anxiety, low mood, hyperarousal, intrusive thoughts or flashbacks

Paroxetine (Seroxat)

Antidepressant – SSRIAnxiety, low mood, hyperarousal, intrusive thoughts or flashbacks

Fluoxetine (Prozac)

Antidepressant – SSRIAnxiety, low mood, hyperarousal, intrusive thoughts or flashbacks

Venlafaxine XR (Efexor XL)

Antidepressant – serotonin-norepinephrine reuptake inhibitors (SNRI)Low mood and depression, generalised anxiety and physical symptoms of anxiety, such as restlessness or tension

Mirtazapine (Zispin)

Antidepressant – atypical/tetracyclicPoor sleep, anxiety and hyperarousal

Amitriptyline

Tricyclic antidepressantSevere depression, treatment-resistant symptoms and chronic pain

Phenelzine

Monoamine oxidase inhibitor (MAOI)Severe depression and treatment-resistant symptoms

Duration of treatment

When it comes to medication for PTSD, there’s no ‘one-size-fits-all’ timeline. How long you need to take medication depends on several factors, including:

  • The severity and duration of symptoms
  • Whether your PTSD is acute or chronic
  • The presence of other mental health conditions, like depression or anxiety 
  • How well you respond to treatment 

Things to keep in mind about PTSD medication

  • It’s not forever – but it can be long-term: most people gradually reduce or stop medication once they’re feeling better – recovery is possible, and medication isn’t usually meant to be taken forever. However, some people may choose to stay on the medication when it continues to support their wellbeing or helps with other health conditions
  • Don’t stop medication suddenly: if and when you come off medication, it’s important that this is done gradually and under medical supervision – stopping suddenly can lead to withdrawal symptoms or the return of distressing feelings
  • It’s a collaborative process: you’ll work closely with your GP or specialist to decide whether to continue or adjust medication, how long to stay on it and when to stop. These choices are based on your goals, progress and personal circumstances

Side effects and withdrawal symptoms 

Like most medication, medication for PTSD can cause side effects. For most people, these are mild and temporary –  subsiding after a few weeks, once the body has adjusted. 

Not everyone experiences side effects. For many people who do, the benefits of medication (improved sleep, reduced anxiety and stabilised mood) far outweigh the drawbacks. If there are side effects, these can generally be managed in collaboration with your healthcare provider.

Common side effects

  • Nausea 
  • Headaches
  • Sleep disturbances 
  • Increased anxiety or restlessness at first
  • Sweating or dizziness
  • Sexual side effects, such as reduced libido or difficulty reaching orgasm 
  • Emotional blunting – a reduced ability to feel emotions, often described as feeling numb, flat or disconnected 

Rarer or more serious side effects 

  • Mood changes, such as agitation or low mood
  • Suicidal thoughts, especially in the early stages
  • Severe allergic reactions 
  • Hyponatremia (low sodium levels) in older adults  

FAQs

How is medication prescribed and monitored?

Before prescribing medication, your healthcare provider will evaluate your symptoms, medical history and any other mental health concerns. Your treatment plan is carefully overseen and tailored to your needs. 

If medication is deemed appropriate, you’ll typically start on a low dose, which will be increased gradually depending on how you respond. You’ll be asked to:

  • Attend regular check-ins to review side effects and progress
  • Continue taking medication daily, even if you feel better – stopping suddenly can cause withdrawal symptoms (more on this below)
  • Try the medication for several weeks, as it can take up to 6 weeks to see the impact

What is active monitoring?

For people with mild symptoms or those in the early weeks after a traumatic experience, healthcare providers may recommend a period of active monitoring. This means they’ll keep a close eye on your symptoms, usually through regular appointments or check-ins, but will hold off on prescribing medication immediately. 

This is because many people begin to recover naturally in the weeks following trauma, especially when good support is in place. If symptoms haven’t subsided after a month, the healthcare provider will discuss treatment options with you.

When is medication started?

Before prescribing medication, your GP or specialist will carry out a thorough assessment to understand your symptoms, history and preferences. Medication is typically considered when:

  • Symptoms persist beyond 1 month and are mild to severe in intensity
  • Symptoms interfere with daily life and relationships
  • Other conditions, such as depression or anxiety, are also present 
  • Therapy is unavailable, unsuitable or not enough on its own

How is dosage determined?

Medication for PTSD is generally prescribed through a stepped approach. That means you’ll start on a low dose to reduce the chances of side effects. The dose is gradually increased over time, depending on how you respond to it.

If you do experience side effects, adjustments can be made by either lowering the dose, changing the timing, or trying a different medication altogether. 

Ongoing monitoring

If you’re prescribed medication for PTSD, you’ll have regular check-ins with your GP, mental health team or psychiatrist to review:

  • How your symptoms are progressing
  • Any side effects or concerns 
  • Whether the medication is helping
  • Whether it should be continued, adjusted or gradually stopped 

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