A member asked:

Is there a difference between ativan and klonopin (clonazepam)?

16 doctors weighed in across 6 answers
Dr. Pamela Pappas answered

Specializes in Psychiatry

Yes: Both Ativan and Klonopin (clonazepam) are benzodiazepines and can be used to treat anxiety symptoms. Ativan is shorter-acting than Klonopin (clonazepam) though -- half-life of 8-24 hours compared to 19-60 hours.

Answered 2/5/2016

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Similar & different: Both are "benzodiazepine" tranquilizers, which means they are chemically similar and relieve anxiety by their effect on GABA receptors in the brain. They are also both habit-forming if taken regularly. Comparing the two, Klonopin (clonazepam) is more sedating and lasts longer than the same dose of Ativan (lorazepam).

Answered 11/27/2017

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Dr. Jane Steiner answered

Specializes in Psychiatry

Yes and no.....: Same chemical class and both help with anxiety; but Klonopin (clonazepam) takes longer to get in your system and take effect and typically lasts longer but leaves your system more gradually, while Ativan gets in and out faster.

Answered 12/31/2016

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1/2 life: Ativan has quicker onset and excretion;whereas Klonopin (clonazepam) is longer to take effect and stays in body longer.

Answered 6/9/2016

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Dr. Alan Ali answered

Specializes in Psychiatry

Ativan/klonopin: Ativan can last 4-6 hours, Klonopin (clonazepam) up to 12 hours. Also, Ativan can be injected and that is used in er for emergencies. There is a form of Klonopin (clonazepam) that works fast and can be dissolved on tongue, called Klonopin (clonazepam) wafers.

Answered 9/28/2016

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Dr. Dheeraj Raina answered

Specializes in Psychiatry

Duration of action &: One is short-acting, the other long-acting. One has greater risk of addiction than the other. One is metabolized in the liver, the other is not.

Answered 10/4/2016

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