How Fast Does Ketamine Work for Depression?

Key takeaway

Unlike most antidepressants, ketamine can reduce depressive symptoms within hours. Here is the science.

Why speed matters Standard antidepressants often take four to eight weeks to work. For someone in severe distress, that wait can be very hard.

What studies show - A 2013 randomized trial (Murrough et al., American Journal of Psychiatry) found a single ketamine infusion produced greater improvement within 24 hours than an active placebo in people with treatment-resistant depression. - A 2018 meta-analysis (Wilkinson et al.) found a single dose of ketamine rapidly reduced suicidal thoughts, with effects seen within one day and lasting up to about a week.

How it may work Ketamine acts on the brain's glutamate system. Research suggests it triggers a burst of activity that helps brain cells form new connections, a process sometimes called neuroplasticity.

The catch Effects from one dose often fade within days to weeks, so treatment typically involves a series of sessions followed by maintenance, ideally with therapy and ongoing care.

Sources: Murrough JW, et al. Am J Psychiatry 2013; Wilkinson ST, et al. Am J Psychiatry 2018. Educational only. If you are in crisis, call or text 988.

This page is informational and is not medical advice.

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How Fast Does Ketamine Work? The Research Behind Rapid Relief

Why speed matters Standard antidepressants often take four to eight weeks to work. For someone in severe distress, that wait can be very hard.

How it may work Ketamine acts on the brain's glutamate system. Research suggests it triggers a burst of activity that helps brain cells form new connections, a process sometimes called neuroplasticity.

The catch Effects from one dose often fade within days to weeks, so treatment typically involves a series of sessions followed by maintenance, ideally with therapy and ongoing care.

Keep reading

How Fast Does Ketamine Work? The Research Behind Rapid Relief

Why speed matters Standard antidepressants often take four to eight weeks to work. For someone in severe distress, that wait can be very hard.

How it may work Ketamine acts on the brain's glutamate system. Research suggests it triggers a burst of activity that helps brain cells form new connections, a process sometimes called neuroplasticity.

The catch Effects from one dose often fade within days to weeks, so treatment typically involves a series of sessions followed by maintenance, ideally with therapy and ongoing care.

Keep reading

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