Compare Chlorpromazine vs. Ativan

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

Coming soon.

Chlorpromazine

Ativan
(Lorazepam)

Coming soon.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.
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Reviews & ratings
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Have you used Chlorpromazine?
Worth itNot sureNot worth it
Reviews for Ativan (Lorazepam)
71%
+71% vs. Chlorpromazine
51%
+51% vs. Chlorpromazine
15%
15% vs. Chlorpromazine
642 reviews
Have you used Ativan (Lorazepam)?
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Side effects
ChlorpromazineAtivan

We haven’t found good data for Chlorpromazine side effects.

FDA side effect reports for Chlorpromazine »

The Ativan FDA package insert doesn’t have numbers about how common side effects are.

More about Ativan side effects »
How it works
ChlorpromazineAtivan
Coming soon.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.
Type of medication
ChlorpromazineAtivan
Coming soon.
Anti-anxiety
Benzodiazepine
Prescription only
Available as
ChlorpromazineAtivan
  • Pill
  • Pill
  • Liquid
Used for (click to learn more)
ChlorpromazineAtivan
  • Acute intermittent porphyria Apprehension
Risk factors for serious side effects
ChlorpromazineAtivan
  • Taking more than the prescribed dose
  • Taking longer than 4 weeks
  • History of drug abuse
  • Long-term use
  • Alcohol
Detailed risks & warnings »
Pregnancy

The FDA hasn’t classified this medicine’s effects on unborn babies. Talk with your doctor about this medicine if you’re pregnant or planning on it.

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
ChlorpromazineAtivan
No interactions related info.
  • Less likely to have drug interactions compared to other benzodiazepines, so it might be a better option if you're taking multiple medications.
Alcohol
ChlorpromazineAtivan
No alcohol related info.
  • 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
ChlorpromazineAtivan
No sleep related info.
  • Can cause memory problems, drowsiness, dizziness, and confusion.
  • Can cause temporary dizziness and drowsiness.
Upsides and benefits
ChlorpromazineAtivan
Coming soon
  • 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.
Downsides and risks
ChlorpromazineAtivan
Coming soon
  • 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.
Tips from our pharmacists for people taking the medication
ChlorpromazineAtivan
Coming soon
  • 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.
Learn more
More about ChlorpromazineSide effectsFDA package insert
Have you used Chlorpromazine?
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More about AtivanSide effectsReviews & ratingsAlternativesFDA package insert
Have you used Ativan (Lorazepam)?
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