Fast facts
None. Reiki is very safe.
Fatigue, emotional release, headaches, thirst
Usually 24-48 hours
Signs of healing, not harm
Severe or persistent symptoms
After-Effects, Not Side Effects
Understanding Reiki's Temporary After-Effects
There is a difference between side effects and after-effects. Side effects are unwanted reactions to a treatment. After-effects are normal responses to healing.
Reiki has no known serious side effects. It is gentle. It is non-invasive. It does not interact with medications. It does not cause physical harm.
What Reiki does have is after-effects. These are temporary responses as the body integrates the energy. They are signs that something shifted. They are not problems.
Common After-Effects
What to expect after a Reiki session.
- Fatigue: Healing takes energy. Your body is processing. Rest when tired.
- Emotional release: Crying, laughing, irritability, sadness, joy. Stored emotions are surfacing. Let them flow.
- Mild headaches: Energy shifts, especially in the head area. Hydrate and rest.
- Increased thirst: Your body needs hydration for energy flow.
- Vivid dreams: Your subconscious is processing. Normal.
- Healing crisis: Temporary worsening of symptoms before improvement. Like a fever breaking.
- Feeling nothing: Also normal. Not everyone experiences after-effects.
Reiki After-Effects
Temporary responses to Reiki sessions.
Fatigue
Healing takes energy. Rest when tired. Usually 24-48 hours.
Emotional Release
Crying, laughing, irritability. Stored emotions surfacing. Let them flow.
Mild Headaches
Energy shifts. Hydrate and rest. Usually mild and temporary.
Increased Thirst
Body needs hydration for energy flow. Drink water.
Vivid Dreams
Subconscious processing. Normal.
Healing Responses
Why Reiki Causes After-Effects
During a Reiki session, your nervous system shifts from sympathetic (stress) to parasympathetic (rest). This is a big change. Your body has been in stress mode for a long time. Switching to rest mode is disorienting at first.
Stored emotions and physical tension begin to release. This release can feel like fatigue, emotional rawness, or even mild discomfort. It is not that Reiki caused these things. It is that Reiki allowed them to surface so they could be processed and released.
The after-effects are a good sign. They mean something shifted. Your body is doing exactly what it needs to do: heal.
How Practitioners Understand After-Effects
I tell clients that Reiki does not have side effects. It has after-effects. Fatigue, emotional release, and mild headaches are normal. They are signs of healing. Rest, drink water, be gentle with yourself. The after-effects will pass.
Reiki is very safe. It does not have side effects in the medical sense. But it does have after-effects. These are temporary healing responses. They are not harmful. They are signs that something shifted.
If you have severe symptoms, chest pain, difficulty breathing, or anything that concerns you, seek medical attention immediately. Do not assume it is just a Reiki after-effect. Better to be safe.
What People Get Wrong About Reiki Side Effects
Myth: Reiki has serious side effects.
Reality: Reiki has no serious side effects. It is very safe.
Myth: Feeling tired after Reiki is bad.
Reality: Fatigue is a normal healing response. Rest is needed.
Myth: Crying during Reiki is a problem.
Reality: Crying is emotional release. It is a sign of healing.
Myth: If you feel worse after Reiki, something went wrong.
Reality: Temporary worsening (healing crisis) is normal. It usually passes in 24-48 hours.
Key takeaways
- Reiki has no serious side effects. It is very safe.
- Temporary after-effects include fatigue, emotional release, mild headaches, and thirst.
- These after-effects are signs of healing, not harm.
- They usually last 24-48 hours.
- If symptoms are severe or persistent, see a doctor.
- Reiki is not a substitute for medical care.
Frequently asked questions
Can Reiki have negative side effects?
Reiki has no known serious side effects. It is very safe. Temporary after-effects like fatigue and emotional release are normal.
Why do I feel tired after Reiki?
Healing takes energy. Your body is processing. Rest when tired. Fatigue usually passes within 24 hours.
Why did I cry during Reiki?
Emotional release. Stored emotions surfaced. This is normal and often feels good afterward.
Can Reiki cause headaches?
Some people experience mild headaches as energy shifts. This is usually temporary. Hydrate and rest.
What if I feel worse after Reiki?
Temporary worsening (healing crisis) is normal. It usually passes in 24-48 hours. If symptoms persist, see a doctor.
Sources
- Bronwen and Frans Stiene, The Reiki Sourcebook, 2003.
- Practitioner experience and client reports.
- Traditional Reiki aftercare teachings.
