Compare Ativan vs. Remeron

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

Ativan
(Lorazepam)

Remeron
(Mirtazapine)

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.Improves mood. Remeron (Mirtazapine) is okay for treating depression and good for sleep. More likely to cause weight gain than any other antidepressant.
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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 Remeron (Mirtazapine)
45%
26% vs. Ativan (Lorazepam)
39%
12% vs. Ativan (Lorazepam)
26%
11% vs. Ativan (Lorazepam)
152 reviews
Have you used Remeron (Mirtazapine)?
Worth itNot sureNot worth it
Side effects
AtivanRemeron

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

More about Ativan side effects »

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

More about Remeron side effects »
How it works
AtivanRemeron
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.Remeron (Mirtazapine) is an atypical antidepressant. It stimulates your body to make certain chemicals in the brain, such as serotonin and norepinephrine, which regulate mood.
Type of medication
AtivanRemeron
Anti-anxiety
Benzodiazepine
Prescription only
Antidepressant
Noradrenergic and specific serotonergic antidepressant
Prescription only
Available as
AtivanRemeron
  • Pill
  • Liquid
  • Pill
  • Dissolving tablet
Used for (click to learn more)
AtivanRemeron
Risk factors for serious side effects
AtivanRemeron
  • Taking more than the prescribed dose
  • Taking longer than 4 weeks
  • History of drug abuse
  • Long-term use
  • Alcohol
Detailed risks & warnings »
  • Age 24 years or younger
  • Using other medications that affect serotonin
  • History of heart problems
  • History of liver problems
  • Higher dose
Detailed 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 animals found harmful effects on unborn babies. It hasn’t been properly studied in humans. The benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

Interactions
AtivanRemeron
  • 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
AtivanRemeron
  • 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.
No alcohol related info.
Sleep
AtivanRemeron
  • Can cause memory problems, drowsiness, dizziness, and confusion.
  • Can cause temporary dizziness and drowsiness.
No sleep related info.
Weight
AtivanRemeron
No weight related info.
  • More likely to cause minor weight gain (1 to 5 pounds) and raise cholesterol than any other antidepressant.
  • Can increase appetite and weight.
  • Remeron (Mirtazapine) can increase appetite and cause you to gain weight.
Upsides and benefits
AtivanRemeron
  • 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 some depression symptoms.
  • Starts to work more quickly than most antidepressants.
  • Might be a good option for people who have insomnia with their depression, because it can make you very sleepy.
  • Good option for people who are underweight or frail, because it can help you gain weight.
  • Six out of ten people who use an antidepressant for the first time find that it works for them.
Downsides and risks
AtivanRemeron
  • 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.
  • Not as effective as other medications for depression.
  • More sedating than other antidepressants.
  • More likely to cause minor weight gain (1 to 5 pounds) and raise cholesterol than any other antidepressant.
  • Like most antidepressants, can cause higher risk of suicidal thoughts and behavior for people age 24 and younger.
  • The first antidepressant you try doesn't always work or it can cause side effects you really don't like. You might need to try a few different medications until you find one that works for you.
Tips from our pharmacists for people taking the medication
AtivanRemeron
  • 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.
  • Makes you sleepy. Take at bedtime.
  • Can increase appetite and weight.
  • Takes 8 to 12 weeks to see full effects on mood.
  • Stop taking slowly to avoid withdrawal symptoms.
  • Tell your doctor if you notice sudden mood changes or unusual thoughts.
Learn more
More about AtivanSide effectsReviews & ratingsAlternativesFDA package insert
Have you used Ativan (Lorazepam)?
Worth itNot sureNot worth it
More about RemeronSide effectsReviews & ratingsAlternativesFDA package insert
Have you used Remeron (Mirtazapine)?
Worth itNot sureNot worth it