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 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.Improves mood. Remeron (Mirtazapine) is okay for treating depression and good for sleep. More likely to cause weight gain than any other antidepressant.
Reviews & ratings
Filter group. All currently selected
Filter group. All currently selected
5.14Ativan
Reviews for Ativan
71%
of people (All ages) say Ativan 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
45%
+26% better vs. Ativan
39%
+12% better vs. Ativan
26%
+11% better vs. Ativan
152 reviews
Have you used Remeron (mirtazapine)?
Worth itNot sureNot worth it
Side effects
AtivanRemeron
  • Sleepiness 16%
  • Dizziness 7%
  • Weakness 4%
  • Unsteadiness 3%
More Ativan side effects »
  • Drowsiness 36%
  • Dry mouth 10%
  • Increased appetite 15%
  • Constipation 6%
  • Weight gain 10%
  • Muscle weakness 3%
  • Dizziness 4%
  • Flu syndrome 2%
  • Abnormal dreams 3%
  • Thinking abnormal 2%
More Remeron side effects »
How it works
AtivanRemeron
Ativan (lorazepam) is a fast-acting benzodiazepine. It affects areas of the brain that help calm you down. 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
Prescription onlyPrescription only
Available as
AtivanRemeron
  • Pill
  • Liquid
  • Injection
  • Pill
  • Dissolving tablet
Used for
AtivanRemeron
Risk factors for serious side effects
AtivanRemeron
  • Taking with opioids
  • Taking more than the prescribed dose
  • Taking Ativan (lorazepam) for longer than 4 weeks
  • History of drug abuse
  • Long-term use
Detailed Ativan (lorazepam) risks & warnings »
  • Age 24 years or younger
  • Using other medications that affect serotonin
  • History of heart problems
  • History of liver problems
  • Higher dose
Detailed Remeron (mirtazapine) risks & warnings »
Pregnancy

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 drugs like it, so it might be a better option if you're taking multiple medications.
No interactions related info.
Alcohol
AtivanRemeron
  • 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.
No alcohol related info.
Sleep
AtivanRemeron
  • Can cause temporary dizziness and drowsiness.
  • Can cause memory problems, drowsiness, dizziness, and confusion.
No sleep related info.
Weight
AtivanRemeron
No weight related info.
  • Remeron (Mirtazapine) can increase appetite and cause you to gain weight.
  • Can increase appetite and weight.
  • More likely to cause minor weight gain (1 to 5 pounds) and raise cholesterol than any other antidepressant.
Upsides and benefits
AtivanRemeron
  • 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.
  • 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 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.
  • 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
  • Can cause temporary dizziness and drowsiness.
  • Take only as much as your doctor prescribes. Taking more than directed or taking this for a long time can cause you to become dependent on it.
  • Not safe to use with alcohol.
  • Use caution or avoid use in older adults.
  • 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