Compare Klonopin vs. Ativan

Head-to-head comparisons of medication uses, side effects, ratings, and more.

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Klonopin (clonazepam)

Prescription only

Ativan (lorazepam)

Prescription only
Controls seizures and helps panic attacks.

Klonopin (clonazepam) can be used for immediate relief of panic attacks and seizures, but is not intended for long-term management.

3.8/ 5 average rating with 767 reviewsforKlonopin
Helps you relax.

Ativan (lorazepam) is an effective medicine for occasional or short-term anxiety. It's less likely to have drug interactions, but more likely to cause withdrawal symptoms compared to similar drugs.

3.8/ 5 average rating with 642 reviewsforAtivan
Upsides
  • More people who took Klonopin (clonazepam) were free of panic attacks, compared to people who did not take Klonopin (clonazepam).
  • Klonopin (clonazepam) works quickly, within the hour.
  • Can be used together with antidepressants to manage panic disorder.
  • Klonopin (clonazepam) lasts longer and has less severe withdrawal symptoms compared to other similar medicines.
  • Effective at relieving short-term anxiety.
  • Can be used together with antidepressants to manage anxiety disorders. Especially helpful for anxiety symptoms while you wait for an antidepressant to kick in.
  • Less likely to have drug interactions compared to other drugs like it, so it might be a better option if you're taking multiple medications.
Downsides
  • Klonopin (clonazepam) can cause memory problems, drowsiness, dizziness, and confusion.
  • Klonopin (clonazepam) can be habit-forming, so is not typically used for long-term treatment.
  • May require higher doses of Klonopin (clonazepam) over time to establish the same seizure control.
  • Can cause memory problems, drowsiness, dizziness, and confusion.
  • Can be habit-forming, so it's not typically used for long-term treatment or for people who've had problems with drug or alcohol abuse.
  • Compared to other similar medicines, Ativan (lorazepam) is more likely to cause withdrawal if you take it for a long time and then suddenly stop.
  • Most people find that Ativan (lorazepam) gets less effective over time.
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Used for
Dosage forms
  • Pill
  • Dissolving tablet
  • Pill
  • Liquid
  • Injection
Price
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Reviews
767 reviews so far
70%
saidit'sworth it
52%
saiditworked well
14%
saidit'sa big hassle

Have you used Klonopin (clonazepam)?

Leave a review
642 reviews so far
71%
saidit'sworth it
51%
saiditworked well
15%
saidit'sa big hassle

Have you used Ativan (lorazepam)?

Leave a review
Side effects
4possible side effects
  • Drowsiness
    37%
  • Depression
    7%
  • Abnormal coordination
    6%
  • Loss of full control of bodily movements
    5%
See more detailed side effects
4possible side effects
  • Sleepiness
    16%
  • Dizziness
    7%
  • Weakness
    4%
  • Unsteadiness
    3%
See more detailed side effects
Risks and risk factors
  • Sedation, respiratory depression, coma and death
    • Taking with opioids
    • Drinking alcohol
  • Dependence and withdrawal
    • Taking high dosage
    • Taking long-term
    • History of drug abuse
  • Driving impairment
    • Drinking alcohol
    • Taking other medicines that make you less alert
  • Suicidal behavior and ideation
See more detailed risks and warnings
  • Severe sedation with opioid use
    • Taking with opioids
  • Tolerance and dependence
    • Taking more than the prescribed dose
    • Taking Ativan (lorazepam) for longer than 4 weeks
    • History of drug abuse
  • Withdrawal
    • Long-term use
  • Driving impairment
    • Alcohol
    • Taking other medicines that make you less alert
  • Memory problems
See more detailed risks and warnings