How Long Do EMDR Side Effects Last?

How Long Do EMDR Side Effects Last?

Short Answer: What people sometimes call EMDR “side effects” are usually temporary after-session reactions. Mild tiredness, emotional sensitivity, vivid dreams, or thoughts about what you worked on may pass fairly quickly or settle later the same day. Some people notice mild effects into the next day, while others notice little or nothing afterward. There is no exact timetable because people and sessions vary.

Key Takeaways

• Not everyone notices side effects or after-session reactions from EMDR.
• When they do occur, they are generally temporary.
• Mild tiredness or emotional sensitivity may settle fairly quickly or later the same day.
• Some people may notice vivid dreams, memories, or mild tiredness into the next day.
• How you feel after one session does not necessarily predict how you will feel after the next.
• Feeling something after EMDR does not automatically mean the session was more effective, and feeling nothing afterward does not mean it was ineffective.

What Does “EMDR Side Effects” Mean?

People often use the term “side effects” when talking about things they notice during or after EMDR. However, EMDR is not a medication, so these experiences are somewhat different from the side effects people usually associate with taking a drug.

EMDR involves briefly focusing on a memory, thought, feeling, or body sensation while using bilateral stimulation, such as guided eye movements, sounds, or tapping.

Afterward, some people notice temporary changes such as:

• Feeling a little tired
• Feeling more reflective or emotional than usual
• Thinking about the memory again later
• Having a vivid dream
• Wanting a little quiet time

Others finish a session and continue their day without noticing anything unusual.

Major patient-information sources describe these kinds of after-session experiences as temporary. The American Psychological Association notes that tiredness, vivid dreams, uncomfortable emotions, or physical sensations can occur after EMDR but describes these experiences as transient. The U.S. Department of Veterans Affairs similarly notes that some people feel tired and may want to rest briefly after a session while generally being able to continue with daily life as usual.

How Long Do EMDR Side Effects Usually Last?

There is no exact number of hours that applies to everyone.

For many people who notice an after-session reaction, it is relatively brief. You might feel a little tired immediately after the session and then feel like yourself again after a short break or later in the day.

Other people may notice something later rather than immediately. For example, you may think about part of the session again that evening or have a more vivid dream that night.

Some mild reactions can still be noticeable the following morning, but they do not necessarily continue for a long period.

Available clinical guidance does not establish a precise timetable such as “EMDR side effects last exactly six hours” or “all reactions disappear within 24 hours.” Cleveland Clinic describes recovery time between EMDR sessions as minimal, while VA guidance describes the discomfort associated with focusing on difficult memories as usually brief.

The better expectation is that if you notice anything after a session, it will usually be temporary rather than something that follows a fixed schedule.

Why Can the Timing Be Different From One Session to Another?

Your experience can change from session to session.

One session may leave you feeling slightly tired, while another may leave you feeling calm, clear-headed, or no different at all.

Several ordinary factors can influence how you feel afterward, including:

• What you focused on during the session
• How long the session lasted
• How tired you already were before starting
• How much concentration the exercise required
• The time of day you completed the session
• What else was happening in your life that day

This is why it is usually more useful to pay attention to your own pattern than to expect every session to feel the same.

How Long Does Tiredness Last After EMDR?

Tiredness is one of the more commonly discussed after-session experiences.

For many people who notice it, the feeling is mild. You may simply feel ready for a break, want to sit quietly for a little while, or feel slightly sleepier than usual.

It may pass fairly quickly or later the same day.

Some people may still notice mild tiredness that evening or the following morning. This does not mean tiredness is expected after every session, and many people do not notice it at all.

If you repeatedly notice that longer sessions leave you tired afterward, you may choose to experiment with a shorter session or schedule your EMDR at a time that works better with your normal routine.

How Long Do Emotional Reactions Last?

Thinking about a meaningful or upsetting experience can sometimes bring up feelings connected to it.

You might notice an emotion during the session and continue thinking about it for a while afterward. For many people, this settles naturally.

EMDR does not require you to feel highly emotional for it to be useful. Some sessions may bring up noticeable feelings, while others may feel much quieter.

People working through anxiety may also notice that their emotional response varies from one session to another.

If something comes to mind afterward, you also do not need to immediately begin another EMDR session to work on it.

You can simply notice it and decide later whether you want to return to it.

How Long Can Vivid Dreams Last After EMDR?

Some people report more vivid dreams after an EMDR session.

This does not happen to everyone, and there is no established rule about exactly how many nights it will last.

You might notice a vivid dream the night after a session and nothing unusual after that. Another person may notice dreams on more than one occasion.

Research and clinical guidance generally describe these after-session experiences as temporary rather than suggesting that vivid dreams are an expected long-term effect of EMDR.

A vivid dream also does not necessarily mean anything specific about how well the session worked. It may simply be something you noticed afterward.

Can Thoughts or Memories Come Up Between Sessions?

Yes, this can happen.

The VA's National Center for PTSD notes that people may notice new information or thoughts between EMDR sessions and generally can continue with their normal daily lives while allowing those changes to happen naturally.

You may suddenly remember another detail about what you worked on or notice that you think about the experience differently.

This does not mean you need to analyze every thought or memory that appears.

If something seems useful for a future session, you can simply make a note of it and return to it when you choose.

Does a Longer Reaction Mean the EMDR Session Worked Better?

No.

The length or intensity of an after-session reaction is not a scorecard for EMDR.

Feeling tired for several hours does not mean you had a “better” session than someone who felt completely normal afterward.

Likewise, having a vivid dream does not prove that more processing occurred.

People respond differently.

What matters more is how the memory, thought, feeling, or issue you are working on changes over time—not whether you experience a particular reaction immediately after every session.

What If You Feel Completely Normal After EMDR?

That is also a perfectly reasonable experience.

You may finish a session and feel:

• Calm
• Relaxed
• Clear-headed
• Energized
• Neutral
• About the same as you did before

You do not need to look for a reaction afterward.

One of the easiest mistakes to make when reading about EMDR side effects is to start expecting something to happen simply because other people have described it.

There is no required after-session feeling.

What If Something Lasts Longer Than You Expected?

If something continues longer than you expected, it can help to avoid immediately assuming that EMDR must be the cause.

Sleep, everyday stress, illness, medications, work demands, and many other factors can affect how tired, emotional, or physically comfortable you feel on a particular day.

You can also look at your own EMDR routine.

For example, you may choose to:

• Make the next session shorter
• Leave more time between sessions
• Choose a different time of day
• Work on something that feels easier to focus on
• Pause and return another day if you do not feel like continuing

You do not need to push through a session simply because you started it.

If you are also working with a therapist, you may choose to mention any pattern you have noticed at your next appointment.

What This Means for the Virtual EMDR Self-Guided Program

With the Virtual EMDR self-guided online program, you can learn how you respond to sessions and adjust your timing and pacing accordingly.

Because the Virtual EMDR program is self-guided, you choose when to begin a session and can pause or stop when you choose.

If you discover that you prefer having some quiet time after a session, you can schedule your sessions around that.

If you find that you normally feel fine immediately afterward, you may not need to change your schedule at all.

And if one session feels different from another, that does not mean anything has gone wrong. Your response can vary depending on the day and what you choose to work on.

The goal is not to create a reaction. It is to use the process at a pace that works for you.

Conclusion

EMDR after-session effects do not follow a precise timetable. When people notice mild tiredness, emotional sensitivity, vivid dreams, or thoughts related to the session, these experiences are generally temporary and may settle fairly quickly or later the same day. Some people may notice mild effects into the following day, while others notice no after-session reaction at all.

There is also no particular reaction you need to have. Paying attention to your own experience and adjusting the timing, length, or spacing of future sessions is usually more useful than comparing your response with someone else's.