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Compare Paxil vs. Remeron

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

Key takeaways

Paroxetine (Paxil) and mirtazapine (Remeron) are both medications used to treat depression, but they belong to different classes and have distinct characteristics. Paroxetine is a selective serotonin reuptake inhibitor (SSRI) that also treats various anxiety disorders, while mirtazapine is an atypical antidepressant specifically for major depressive disorder (MDD). Paroxetine can cause side effects like nausea, sexual problems, and weight gain, and it may take several weeks to feel its full benefits. In contrast, mirtazapine is more likely to cause sleepiness and weight gain but is less likely to cause nausea or sexual issues. Both medications can lead to withdrawal symptoms if stopped abruptly. Paroxetine is available in both immediate-release and extended-release tablets. Mirtazapine is typically taken once daily at night and is available as a dissolvable tablet, which can be helpful if you have trouble swallowing pills.

  • Paroxetine (Paxil)
    Mirtazapine (Remeron)
  • Paroxetine (Paxil)
    Mirtazapine (Remeron)

  • Summary of Paxil vs. Remeron

    Summary for SSRI
    Prescription only

    Paroxetine (also known by it's brand name Paxil) is a selective serotonin reuptake inhibitor (SSRI), used for different types of anxiety problems and depression. It's available as a brand name and generic version, and it comes as an immediate-release tablet, an oral suspension, and an extended-release tablet. Possible side effects include nausea, sexual side effects, and weight gain. It can also cause withdrawal symptoms (e.g., headache, trouble sleeping, anxiety) if you suddenly stop taking it.

    Summary for Atypical antidepressant
    Prescription only

    Mirtazapine (Remeron) is an atypical antidepressant (or more specifically, tetracyclic antidepressant). It's used to treat major depressive disorder (MDD) in adults. Mirtazapine (Remeron) is available as an oral tablet and orally disintegrating tablet (ODT) that's taken once daily, typically at night. Some common side effects of this medication include sleepiness and dry mouth. Mirtazapine (Remeron) can also raise your appetite and put you at risk for weight gain.

  • Indications of Paxil vs. Remeron

    Indications for
    •Depression
    •Panic disorder (PD)
    •Social anxiety disorder (SAD)
    •Obsessive-compulsive disorder (OCD) (IR only)
    •Generalized anxiety disorder (GAD) (IR only)
    •Post-traumatic stress disorder (PTSD) (IR only)
    •Premenstrual dysphoric disorder (PMDD) (ER only)
    Indications for
    •Major depressive disorder (MDD) in adults

  • Pros and Cons of Paxil vs. Remeron

    Pros and Const for SSRI
    Pros
    •Only needs to be taken once daily
    •Available as a tablet and oral liquid
    •Can be taken with or without food
    •Can be used for many different mental health conditions
    •Can be helpful for people who have both anxiety and depression
    Cons
    •Can take several weeks or months to achieve the full benefits
    •Might be more likely than other SSRIs to cause weight gain or sexual problems
    •Can interact with other medications, especially those affecting serotonin levels
    •Can cause withdrawal symptoms if you suddenly stop taking it
    Pros and Const for Atypical antidepressant
    Pros
    •Taken by mouth once daily
    •Available as a dissolvable tablet for those who can't swallow pills
    •Less likely to cause sexual side effects compared SSRIs
    •Available as a lower-cost generic
    Cons
    •Can take up to 2 months before you feel the the full benefits
    •More likely than other antidepressants to cause weight gain
    •Can cause sleepiness
    •Risk of withdrawal symptoms if you suddenly stop taking it

  • Common Side Effects of Paxil vs. Remeron

    Common Side Effects for
    •Abnormal ejaculation (up to 28%)
    •Nausea (up to 25%)
    •Weakness (up to 22%)
    •Sleepiness or trouble sleeping (up to 24%)
    •Dry mouth (up to 18%)
    •Constipation (up to 16%)
    •Sweating (up to 14%)
    •Dizziness (up to 14%)
    •Diarrhea (up to 12%)
    •Low libido (up to 12%)
    •Shakiness (up to 11%)
    Common Side Effects for
    •Sleepiness (54%)
    •Dry mouth (25%)
    •Feeling more hungry (17%)
    •Constipation (13%)
    •Weight gain (12%)
    •Weakness (8%)
    •Dizziness (7%)

  • Warnings of Paxil vs. Remeron

    Common Side Effects for
    •Worsening depression, suicidal thoughts, and unusual behavior
    •Serotonin syndrome
    •Risk of harm to unborn babies
    •Sexual problems
    •Withdrawal
    •Risk factors: Stopping paroxetine (Paxil) suddenly
    •Risk of bleeding
    •Not for use alone in bipolar disorder
    •Glaucoma
    •Low blood sodium levels
    •Seizures
    •Risk of abnormal heart rhythm from interactions
    Common Side Effects for
    •Worsening depression, suicidal thoughts, and unusual behavior
    •Higher risk of infection (from low white blood cell count)
    •Serotonin syndrome
    •Withdrawal
    •Risk factors: Stopping mirtazapine (Remeron) suddenly
    •Not for bipolar disorder
    •Glaucoma
    •Life-threatening abnormal heart rhythm (QT prolongation)
    •Severe allergic and skin reactions
    •Difficulty concentrating and extreme sleepiness
    •Seizures
    •Low blood sodium levels
    •Caution use in people with phenylketonuria (PKU) - orally disintegrating tablets only

  • Prices with our coupons for Paxil vs. Remeron

    Learn more about Paroxetine
    Learn more about Mirtazapine

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