Compare Ativan vs. Klonopin

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

Ativan
(lorazepam)

Klonopin
(clonazepam)

Helps you relax. Ativan (Lorazepam) is okay for occasional or short-term use (up to 4 weeks) for anxiety and sleep. Less likely to have drug interactions, but more likely to cause withdrawal symptoms compared to similar drugs.Controls seizures and helps you relax. Klonopin (Clonazepam) is okay for occasional or short-term use (up to 4 weeks) for anxiety, and to treat seizures. Less severe withdrawal symptoms compared to similar drugs.
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Prices and coupon for 60 (0.5mg) tablets of lorazepam
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Prices and coupon for 60 (0.5mg) tablets of clonazepam
Reviews & ratings
Filter group. All currently selected
Filter group. All currently selected
5.14Ativan
Reviews for Ativan (lorazepam)
71%
of people (All ages) say Ativan (lorazepam) is worth it
51%
say it works well
15%
say it's a big hassle
642 reviews
Have you used Ativan (lorazepam)?
Worth itNot sureNot worth it
Reviews for Klonopin (clonazepam)
70%
-1% worse vs. Ativan (lorazepam)
52%
+1% better vs. Ativan (lorazepam)
14%
+1% better vs. Ativan (lorazepam)
767 reviews
Have you used Klonopin (clonazepam)?
Worth itNot sureNot worth it
Side effects
AtivanKlonopin
  • Relaxation or sleepiness 16%
  • Dizziness 7%
  • Weakness 4%
  • Unsteadiness 3%
More Ativan side effects »
  • Drowsiness 50%
  • Lack of muscle coordination 30%
  • Behavior problems 25%
  • Ear, nose, or throat infection 6%
  • Fatigue 5%
  • Low mood disorder 6%
  • Dizziness 1%
  • Vaginal inflammation 3%
  • Sinus inflammation 1%
  • Inflammation inside the nose 2%
More Klonopin side effects »
How it works
AtivanKlonopin
Ativan (Lorazepam) is a fast-acting benzodiazepine. It affects neurotransmitters in the brain and calms the nervous system. This reduces anxiety and can cause sleepiness.Klonopin (Clonazepam) is a fast-acting benzodiazepine. It affects neurotransmitters in the brain and calms the nervous system. This reduces anxiety and muscle spasms, and causes sleepiness.
Type of medication
AtivanKlonopin
Prescription only
Prescription only
Available as
AtivanKlonopin
  • Pill
  • Liquid
  • Pill
  • Dissolving tablet
Used for
AtivanKlonopin
Risk factors for serious side effects
AtivanKlonopin
  • Taking more than the prescribed dose
  • Taking longer than 4 weeks
  • History of drug abuse
  • Long-term use
    • Alcohol
    • Taking other medicines that make you less alert
      Detailed Ativan (lorazepam) risks & warnings »
      • Taking more than the prescribed dose
      • Taking longer than 4 weeks
      • History of drug abuse
      • Long-term use
        • Alcohol
        • Taking other medicines that make you less alert
          Detailed Klonopin (clonazepam) risks & warnings »
          Pregnancy

          Research studies with real people found harmful effects on unborn babies, but the benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

          Research studies with real people found harmful effects on unborn babies, but the benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

          Interactions
          AtivanKlonopin
          • Less likely to have drug interactions compared to other benzodiazepines, so it might be a better option if you're taking multiple medications.
          No interactions related info.
          Alcohol
          AtivanKlonopin
          • 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.
          • Not safe to use with alcohol.
          • 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.
          • Not safe to use with alcohol.
          Sleep
          AtivanKlonopin
          • Can cause memory problems, drowsiness, dizziness, and confusion.
          • Can cause temporary dizziness and drowsiness.
          • Can cause memory problems, drowsiness, dizziness, and confusion.
          • Can cause dizziness, drowsiness, and salivation.
          Upsides and benefits
          AtivanKlonopin
          • Effective at relieving short-term anxiety and sleeplessness.
          • Can be used together with antidepressants to manage anxiety disorders. Especially helpful for anxiety symptoms while you wait for an antidepressant to kick in (it can take several weeks).
          • Less likely to have drug interactions compared to other benzodiazepines, so it might be a better option if you're taking multiple medications.
          • Effective at relieving short-term anxiety and sleeplessness.
          • Can be used together with antidepressants to manage anxiety disorders. Especially helpful for anxiety symptoms while you wait for an antidepressant to kick in (it can take several weeks).
          • Can be used alone or with other medicines to treat seizures.
          • Less severe withdrawal symptoms compared to other benzodiazepines.
          Downsides and risks
          AtivanKlonopin
          • 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 benzodiazepines, more likely to cause withdrawal if you take it for a long time and then stop suddenly.
          • Most people find that it gets less effective over time.
          • 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.
          • Most people find that it gets less effective over time.
          Tips from our pharmacists for people taking the medication
          AtivanKlonopin
          • Good for short-term relief of anxiety symptoms.
          • Starts working in 45 minutes when swallowed.
          • Starts working in 10 to 20 minutes when dissolved under your tongue.
          • Can cause temporary dizziness and drowsiness.
          • Addictive. Long-term use can cause dependence or abuse.
          • Not safe to use with alcohol.
          • For the first week, avoid activities that require you to be alert.
          • Can cause dizziness, drowsiness, and salivation.
          • Report any confusion or inability to control muscle movements to your doctor.
          • Not safe to use with alcohol.
          Learn more
          More about AtivanSide effectsReviews & ratingsAlternativesFDA package insert
          Have you used Ativan (lorazepam)?
          Worth itNot sureNot worth it
          More about KlonopinSide effectsReviews & ratingsAlternativesFDA package insert
          Have you used Klonopin (clonazepam)?
          Worth itNot sureNot worth it