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Minimally invasive (IV)
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Ketamine IV in Spain: Prices, Indications & Authorised Clinics

Neuroplasticity and mental health through supervised ketamine infusions

Table of contents

What is Ketamine IV?

Definition and how it works

Ketamine is a dissociative anaesthetic that at sub-anaesthetic doses acts as an NMDA receptor antagonist, producing rapid-onset (within hours) antidepressant, anxiolytic and neuroplastic effects. IV ketamine infusion at 0.5 mg/kg over 40 minutes is the standard for treatment-resistant depression. In longevity and mental health, its potential for neuroplasticity, PTSD treatment, chronic anxiety and chronic pain is actively investigated.

Origin and history

Ketamine was synthesised by Calvin Stevens in 1962 and FDA-approved as an anaesthetic in 1970. Its antidepressant use was discovered serendipitously in the late 1990s. The first controlled studies of IV infusion for depression were published by the NIMH in 2006, marking a milestone in psychopharmacology.

Benefits of Ketamine IV

The fastest-acting antidepressant known (hours versus weeks)

Effective in depression resistant to multiple drugs

Rapid reduction of suicidal ideation

Effects on treatment-refractory PTSD, anxiety and OCD

Stimulation of neurogenesis and neuroplasticity

Efficacy in chronic neuropathic pain and CRPS

Ketamine IV protocol step by step

1

Psychiatric evaluation

Diagnosis of treatment-resistant depression (2+ failed antidepressants). Exclusion of active psychosis and hypertension.

2

Preparation and monitoring

4-hour fast. Peripheral IV access. BP, HR and SpO₂ monitoring. Calm, dimly lit environment.

3

Ketamine infusion

0.5 mg/kg IV over 40 min via controlled infusion pump. Medical staff present throughout.

4

Integration period

15–30 min post-infusion rest. Psychological support. Experience journaling.

5

6-session protocol

3 infusions/week for 2 weeks. Post-protocol response evaluation. Monthly maintenance.

Reference equipment for Ketamine IV

EquipmentBrand / Model
Precision IV infusion pumpB. Braun Perfusor Space / Baxter Sigma
Vital signs monitorPhilips IntelliVue / Mindray BeneView

Clinics on LongevityMap declare their exact equipment for objective scoring.

The science behind Ketamine IV

Scientific evidence summary

The FDA approved intranasal esketamine (Spravato) in 2019 for treatment-resistant depression. Studies from the Yale Mood Disorders Research Program confirm antidepressant response in 70% of patients with treatment-resistant depression after IV infusions. The mechanism includes NMDA antagonism, AMPA/mTOR activation and rapid synapse formation in the prefrontal cortex. Effects on BDNF and prefrontal synapses persist beyond the drug's presence in the body.

Key published studies

Ketamine for treatment-resistant depression

Biological Psychiatry · 2018

70% antidepressant response within 24 hours in patients with multi-drug-resistant depression.

PubMed

Ketamine reduces suicidal ideation rapidly

American Journal of Psychiatry · 2020

55% reduction in suicidal ideation at 24 hours, the fastest available treatment.

PubMed

How much does Ketamine IV cost in Spain?

Price per session

€300–600 per infusion

6 infusions over 2–3 weeks (initial protocol); monthly maintenance

Prices vary by clinic, equipment and practitioner experience. LongevityMap compares price and quality so you always make the best decision.

How we calculate prices

Who is Ketamine IV for?

Recommended profiles

  • 1People with major depression resistant to 2+ antidepressants
  • 2Patients with active suicidal ideation (emergency response)
  • 3People with severe refractory PTSD
  • 4Patients with chronic neuropathic pain or CRPS
  • 5Those seeking supervised therapeutic consciousness expansion

Precautions and contraindications for Ketamine IV

Main contraindications

  • Active psychosis or schizophrenia
  • Uncontrolled hypertension (ketamine raises blood pressure)
  • History of ketamine or other dissociative abuse
  • Pregnancy

Treatments that combine with Ketamine IV

Ketamine IV shows scientific synergy with these treatments:

Transcranial Magnetic StimulationNAD+ IV TherapyBiomarker TestingIV Therapy

Where to get Ketamine IV in Spain?

Compare Ketamine IV clinics across Spain's main cities. Each page includes local prices, quality scores and verified rankings.

Madrid

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Barcelona

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Valencia

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Málaga

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Sevilla

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Bilbao

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Alicante

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Marbella

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Palma

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Zaragoza

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How we verify each clinic

Frequently asked questions about Ketamine IV

Is ketamine addictive?▾
Ketamine has abuse potential, especially in recreational use. In medical protocols with supervised sub-anaesthetic doses, the risk of addiction is low when the patient is appropriately selected and use is restricted to the clinical setting.
What does a ketamine infusion feel like?▾
Patients describe mild dissociative sensations, a floating feeling or depersonalisation. The experience varies: some describe it as deeply relaxing or introspective. It is always administered in the presence of medical staff in a calm environment.
How long do the antidepressant effects last?▾
Initial effects last 1–3 weeks. With the full 6-infusion protocol, remission is maintained in 30–40% of patients at 3 months. Maintenance sessions (monthly or bimonthly) significantly extend the duration of response.

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Content created by the LongevityMap editorial team based on peer-reviewed scientific literature. Sources: PubMed, Cochrane Library. This content does not replace professional medical advice. Our team · Methodology