Side Effects of Mirtazapine

Common side effects of mirtazapine include dizziness, weakness, and weight gain. Most people, however, tolerate the medication well. If side effects do occur, they are typically minor and easily treated. If you experience potentially serious mirtazapine side effects, such as suicidal thoughts, hallucinations, or signs of an allergic reaction, report them immediately to your healthcare provider.

 

Side Effects of Mirtazapine: An Introduction

As with any medicine, side effects are possible with mirtazapine (Remeron®). However, not everyone who takes the drug will experience side effects. In fact, most people tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or can be easily treated by you or your healthcare provider.
 
(This article covers many, but not all, of the possible side effects with mirtazapine. Your healthcare provider can discuss a more complete list of mirtazapine side effects with you.)
 

Common Side Effects of Mirtazapine

Mirtazapine has been studied thoroughly in clinical trials, in which the side effects of a group of people taking the drug are documented and compared to another group not taking the medicine. As a result, it is possible to see what side effects occur, how often they appear, and how they compare to the group not taking the medicine.
 
In these studies, the most common side effects of mirtazapine include:
 
Other common side effects of mirtazapine (occurring in 1 to 5 percent of people) include:
 
  • Flu-like symptoms (such as fever or chills)
  • Abnormal dreams
  • Abnormal thinking
  • Shakiness (tremors)
  • Muscle pain
  • Frequent urination
  • Confusion
  • Back pain
  • Fluid retention (edema)
  • Difficulty breathing.
     
(Side Effects of Mirtazapine Continued: Page 2)
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Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;