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Ketamine: Rapid Relief for Severe Depression
29 May
Summary
- Single ketamine infusion offers rapid depression relief in hours.
- Suicidal thoughts dramatically lowered within 24 hours.
- Repeated infusions needed for long-term treatment-resistant depression.

A review of 26 clinical trials involving over 1,100 patients suggests that a single intravenous ketamine infusion can offer rapid relief for severe depression and suicidal symptoms. This approach may provide a faster alternative to traditional antidepressants, which often take weeks to show effects. The study found that ketamine significantly reduced depression within four hours and dramatically lowered suicidal thoughts within 24 hours.
Patients experienced fewer depressive symptoms for up to a week and reduced suicidal thoughts for up to a month following a single infusion. For individuals with treatment-resistant depression, repeated ketamine infusions demonstrated similar positive outcomes. The most common side effects, such as dizziness and dissociation, were temporary and resolved within hours.
Researchers highlighted two key clinical applications: ketamine's potential as a life-saving emergency treatment for suicidal ideation and the need for repeated sessions for those with persistent treatment-resistant depression. While not yet FDA-approved for depression, ketamine may be used off-label for severe cases or high-risk individuals.
Experts, while acknowledging ketamine's promise, urge caution. They stress that the medication must be administered in closely monitored medical settings due to potential risks of abuse and dissociation. Consulting a doctor is advised for anyone considering alternative depression treatments.