Extreme elation or feelings of happiness that may switch back and forth with a depressed or sad mood
Other unusual changes in behavior
Hallucinations
A fast heart rate
Chest palpitations (feelings of a rapidly or forcefully beating heart)
Difficulty sleeping
A sore throat, fever, or other signs of an infection
Signs of an allergic reaction, such as:
An unexplained rash
Hives
Itching
Unexplained swelling
Wheezing
Difficulty breathing or swallowing.
Rare Side Effects Seen With Remeron
Rare Remeron side effects occur in less than 1 percent of people taking the drug. Because these side effects are so uncommon, it is difficult to tell whether they are because of the medication or something else.
Some of these rare side effects include but are not limited to: