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Overview of Spravato Side Effects

Spravato Side Effects most often include dizziness, nausea, a temporary rise in blood pressure, sleepiness (sedation), and dissociation (feeling detached or “not quite yourself”), and they’re typically most noticeable on treatment days. Because Spravato (esketamine) is administered in a clinically monitored setting, patients are observed after each dose so side effects can be identified early and managed safely.

Spravato is used for certain forms of depression, including treatment-resistant depression and major depressive disorder with suicidal ideation, when other approaches haven’t been enough. Like any medication that acts on the brain, it can cause both expected short-term effects and, more rarely, more serious reactions. Understanding what’s common, what’s less common, and what’s urgent can help you feel more prepared for each session and make informed decisions with your prescribing clinician.

Our online directory, TMS Therapy Near Me, helps you find a qualified Spravato in your area. Book your appointment today!

Overview of Spravato Side Effects

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Spravato Side Effects most often include dizziness, nausea, a temporary rise in blood pressure, sleepiness (sedation), and dissociation (feeling detached or “not quite yourself”), and they’re typically most noticeable on treatment days. Because Spravato (esketamine) is administered in a clinically monitored setting, patients are observed after each dose so side effects can be identified early and managed safely.

Spravato is used for certain forms of depression, including treatment-resistant depression and major depressive disorder with suicidal ideation, when other approaches haven’t been enough. Like any medication that acts on the brain, it can cause both expected short-term effects and, more rarely, more serious reactions. Understanding what’s common, what’s less common, and what’s urgent can help you feel more prepared for each session and make informed decisions with your prescribing clinician.

Our online directory, TMS Therapy Near Me, helps you find a qualified Spravato in your area. Book your appointment today!

Overview of Spravato Side Effects Banner
Table Of Contents

Common Side Effects of Spravato

Common Spravato side effects usually appear soon after dosing and improve during the monitored observation period or later the same day. Many people find the first few sessions feel the most “noticeable,” with side effects becoming more predictable over time.

Dizziness and Nausea

Dizziness and nausea are among the most frequently reported Spravato side effects. They can range from mild unsteadiness to a stronger “spinning” sensation, sometimes paired with stomach upset.

  • Nausea can make the rest of the session uncomfortable and may affect hydration.
Practical ways to reduce impact (before and after treatment):
  • Eat lightly beforehand if your prescribing clinic provides guidance that allows it; avoid heavy, greasy meals.
  • Hydrate earlier in the day (without overdoing it right before the session).
  • Move slowly when changing positions (lying to sitting, sitting to standing).
  • Plan a calm, low-demand rest of the day.

Increased Blood Pressure

A temporary increase in blood pressure can occur after Spravato dosing. This is one reason Spravato is administered under clinical supervision, with vital signs monitored.
What it can feel like:
  • Headache or head pressure
  • Flushing
  • A sense of a “racing” body sensation (even without anxiety)
  • Plan a calm, low-demand rest of the day.
Why it matters:
  • For most people, the elevation is short-lived.
  • If you have a history of blood pressure concerns, your clinician may take extra precautions, such as more frequent checks or additional monitoring time.
If you’re tracking symptoms, note:
  • When the headache starts (during monitoring vs. later)
  • Whether it improves with rest in a quiet room
  • Any associated chest discomfort, severe shortness of breath, or severe headache (seek urgent help for severe symptoms)

Sedation and Dissociation

Sedation (feeling sleepy, slowed down, or drowsy) and dissociation (a sense of detachment from your body, surroundings, or time) are hallmark experiences some patients notice on treatment days.
Sedation may look like:
  • Heavy eyelids, slowed speech, reduced alertness
  • Feeling “foggy” or unusually tired
  • Needing to rest quietly during the observation period
Dissociation may feel like:
  • Being “spaced out”
  • Feeling emotionally distant or dreamlike
  • A change in perception of time, sound, or body sensations
Why it matters:
  • These effects are typically temporary and monitored, but they can be unsettling if you don’t expect them.
  • They’re also a major reason patients should not drive or return to safety-sensitive tasks after a session.
Many patients do better when they:
  • Treat the appointment like a recovery window, not an errand
  • Bring comforting items allowed by the clinic (e.g., a sweater, eye mask, quiet music if permitted)
  • Avoid intense conversations or decision-making immediately afterward

Less Common and Rare Side Effects

Not everyone experiences the same pattern. Some symptoms are less common but still possible, while others are rare and require prompt attention if they occur.

Less Common Side Effects

Less common Spravato side effects can include:

  • Headache
  • Fatigue later in the day
  • Anxiety or restlessness during the session
  • Vomiting
  • Changes in taste or smell
  • Tingling sensations
  • Increased sweating
  • Feeling “unreal” or emotionally blunted for a short time
  • Trouble concentrating for the remainder of the day
These are often manageable with session planning and symptom tracking. If you notice a side effect repeatedly (for example, nausea every time), tell your clinician – there may be strategies to reduce it.

Rare Side Effects

Rare side effects may include more intense or concerning reactions, such as:
  • Severe, persistent confusion
  • Severe panic-like symptoms that don’t settle with reassurance and time
  • Fainting or near-fainting episodes
  • Significant worsening of blood pressure symptoms
  • Allergic-type reactions (for example, swelling, hives, or trouble breathing)
Even if something is rare, it’s worth taking seriously, especially if it’s new, escalating, or doesn’t resolve within the expected monitoring window.

Incidence Not Known

Some side effects have uncertain frequency because they may be reported inconsistently or occur in complex real-world settings where patients have other health conditions and medications.
Examples of effects that may be described variably include:
  • Mood swings or unusual irritability on treatment days
  • Sleep disruption (too sleepy afterward or trouble sleeping later)
  • Short-term memory lapses or “brain fog” beyond the session Unusual dreams
If you experience something that feels outside the “usual” Spravato side effects you were counseled on, document:
  • Timing (during monitoring vs. later that evening vs. next day)
  • Severity (mild/moderate/severe)
  • Whether it resolved completely
  • Any triggers (skipped meal, dehydration, poor sleep, new medication)

Serious Side Effects of Spravato

Serious reactions are less common, but understanding them is central to safe treatment.

Respiratory Depression

Respiratory depression means breathing becomes too slow or shallow. It’s a serious medical issue.

Seek urgent help if someone experiences:

  • Trouble breathing, gasping, or bluish lips/face
  • Unusual difficulty staying awake
  • Severe confusion with slowed or irregular breathing
Clinical monitoring after each session is designed to help detect problems early.

Abuse Potential

Spravato contains esketamine, which is related to ketamine. Because of this, there is an abuse and misuse potential.

Suicidal Thoughts and Actions

As with other antidepressant treatments, changes in mood and suicidal thoughts can occur, particularly when starting a new therapy or changing dose/frequency. Spravato is also used in situations involving suicidal ideation, which means close follow-up is essential.

For additional educational reading around depression support strategies, see: Overcoming depression and Ways to cope.

Cognitive Impairment

Short-term cognitive impairment can occur on treatment days – slower reaction time, reduced attention, and difficulty multitasking. This is one reason clinics require post-dose observation and why patients should plan not to drive or operate machinery afterward.

Signs you should take seriously include:

  • Confusion that feels severe or persists into the next day
  • Disorientation about place/time that doesn’t clear
  • Inability to form new memories for a prolonged period
Even when mild, cognitive effects can be disruptive, so it helps to plan your day around them.

Long-Term Side Effects

Many Spravato side effects are acute (they occur around the time of dosing). Long-term concerns tend to fall into a few practical categories:

  • Repeated “treatment-day downtime.” Even if side effects are not dangerous, needing several hours of quiet recovery can affect work, caregiving, and routines.
  • Ongoing blood pressure monitoring needs. Some patients may need closer monitoring over time depending on their medical history.
  • Cognitive “hangover” in some patients. While many feel back to baseline by the next day, some people report lingering fatigue or fogginess.
  • Tolerance of dissociation. Some individuals become more comfortable with dissociation once they recognize it as time-limited; others find it stressful and need adjustments in pacing, environment, or supportive strategies.
If you’re concerned about what extended treatment looks like, it may help to understand the overall schedule and pacing of care (without focusing on procedural detail): treatment duration can vary, and planning ahead often reduces stress.

How Long Do Spravato Side Effects Last?

Most Spravato side effects are short-lived, typically peaking during the observation window after dosing and fading later the same day. However, the exact timeline varies based on:
  • Dose and session frequency
  • Individual sensitivity
  • Sleep, hydration, and food intake
  • Other medications and medical conditions
  • Stress level and sensory environment
A practical way to think about it:
  • During the session: dissociation/sedation/dizziness may be most noticeable.
  • Later that day: fatigue, headache, or mild nausea can linger.
  • Next day: many people feel mostly back to baseline, though some report residual tiredness or mental fog.
If you notice your Spravato side effects are lasting longer over time rather than improving, bring that pattern to your clinician’s attention.

Managing and Mitigating Side Effects

Managing Spravato side effects is often about good preparation, symptom tracking, and creating the right “container” for treatment days. Small changes – like what you do before the appointment and how you structure the hours afterward – can meaningfully improve comfort.

How to Deal With Common Side Effects

For dizziness

  • Stand up slowly and use support when walking.
  • Avoid sudden head movements.
  • Plan to rest after the session rather than going straight back to errands.
For nausea
  • Keep meals simple earlier in the day.
  • Choose bland foods afterward (toast, crackers, rice, soup) if your stomach is unsettled.
  • Sip water or an electrolyte drink slowly if you’re prone to nausea (as tolerated).
For headache
  • Rest in a dim, quiet environment after the session.
  • Reduce screen time for a few hours.
  • Note whether headaches correlate with blood pressure readings during visits.
For sedation/fatigue
  • Clear your schedule for the rest of the day.
  • Arrange reliable transportation home.
  • Plan a low-stimulation evening (light meal, quiet activity, early bedtime).
For dissociation
  • Remind yourself it’s time-limited and expected for some patients.
  • Use grounding strategies: slow breathing, noticing physical touchpoints (feet on the floor, hands on the lap), or listening to calming audio if permitted.
  • Avoid intense emotional processing immediately afterward unless your care plan specifically includes structured support.

If you want broader depression coping tools to pair with clinical treatment, consider reading Beating the End of Summer Blues for practical mood-support strategies that can apply year-round.

Medical Interventions

Some side effects can be addressed medically, depending on your history and clinician preference. Examples may include:
  • Adjusting the session environment (lighting, sound, pacing)
  • Changing the dose or spacing of treatments
  • Additional monitoring if blood pressure rises significantly
  • Treating nausea or headache when clinically appropriate
  • Reviewing your full medication list to reduce additive sedation or interactions
Because Spravato is administered under supervision, the care team can observe your response and make reasonable adjustments over time. If you’re keeping a log, bring it with you – patterns are often more actionable than isolated episodes

When to Contact Your Doctor

Contact your prescribing clinician promptly if you experience:
  • Side effects that feel severe, frightening, or different from prior sessions
  • Symptoms that do not improve by later in the day or that carry into the next day in a disruptive way
  • Repeated vomiting, inability to keep fluids down, or signs of dehydration
  • Severe headache, chest pain, fainting, or severe shortness of breath New or worsening anxiety, agitation, or mood instability after sessions
  • Any increase in suicidal thoughts, self-harm urges, or significant behavior changes
If symptoms are life-threatening or you feel you might harm yourself, seek emergency help immediately.

Summary: What to Know About Spravato Side Effects

Spravato side effects are often manageable and most commonly include dizziness, nausea, temporary blood pressure increases, sedation, and dissociation – usually concentrated around treatment sessions.

The most helpful approach is to plan for treatment-day downtime, track your symptoms, and report patterns early so your care plan can be adjusted. If you’re comparing depression treatment pathways, you may also find it useful to read TMS vs Spravato.

Conclusion

Spravato side effects are typically short-term and most noticeable on dosing days, with many people returning close to baseline by the next day. Knowing what’s common, what’s rare, and what requires urgent attention can help you feel more prepared – and support more comfortable treatment.

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