MIRTAZAPINE Side Effects by Likelihood and Severity

COMMON side effects

If experienced, these tend to have a Severe expression i

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    If experienced, these tend to have a Less Severe expression i

    • high cholesterol
    • dry mouth
    • constipation
    • drowsiness
    • dizziness
    • weight gain
    • increased hunger
    • generalized weakness

    INFREQUENT side effects

    If experienced, these tend to have a Severe expression i

    • confusion
    • mood changes
    • agitation
    • hyperactive behavior
    • high blood pressure
    • flu-like symptoms
    • diminished movement
    • a skin rash
    • visible water retention
    • trouble breathing
    • a high alanine transaminase level

    If experienced, these tend to have a Less Severe expression i

    • orthostatic hypotension, a form of low blood pressure
    • widening of blood vessels
    • inflammation of the tissue lining the sinuses
    • urinary tract infection
    • itching
    • joint pain
    • backache
    • muscle weakness
    • muscle pain
    • memory loss
    • sensation of spinning or whirling
    • muscle tremors
    • muscle twitching
    • numbness
    • fluid retention in the legs, feet, arms or hands
    • decreased appetite
    • excessive thirst
    • cough
    • nausea
    • vomiting
    • an increased need to urinate often
    • nervousness
    • a feeling of pins and needles on skin
    • a feeling of general discomfort called malaise
    • intense abdominal pain
    • indifferent behavior
    • anxious feelings

    RARE side effects

    If experienced, these tend to have a Severe expression i

    • shingles
    • low amount of sodium in the blood
    • very low levels of granulocytes, a type of white blood cell
    • low levels of a type of white blood cell called neutrophils
    • manic behavior
    • a form of mania that has a lower severity of symptoms
    • delusions
    • depersonalization, a disconnection of one's own sense of reality or identity
    • suicidal thoughts
    • feelings of hostility
    • extrapyramidal disease, a type of movement disorder
    • serotonin syndrome, a type of disorder with high serotonin levels
    • disturbance in the ability of the eye to focus
    • torsades de pointes, a type of abnormal heart rhythm
    • prolonged QT interval on EKG
    • kidney stones
    • the inability to have an erection
    • pain with menstruation
    • absence of menstrual periods
    • inflammation of the skin with blisters
    • erythema multiforme, a type of allergic skin reaction
    • a skin disorder with blistering and peeling skin called toxic epidermal necrolysis
    • a skin disorder with blistering and peeling skin called Stevens-Johnson syndrome
    • a condition with muscle tissue breakdown called rhabdomyolysis
    • hallucinations
    • seizures
    • a feeling of restlessness with inability to sit still
    • puffy face from water retention
    • abnormal liver function tests
    • secondary angle-closure glaucoma, a type of eye disorder
    • irritability
    • abnormal muscle movements

    If experienced, these tend to have a Less Severe expression i

    • a high prolactin level
    • aggressive behavior
    • breast fullness due to milk production
    • a distorted sense of smell called parosmia
    • abnormal dreams
    • sleepwalking
    • a loss of taste

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    Selected from data included with permission and copyrighted by First Databank, Inc. This copyrighted material has been downloaded from a licensed data provider and is not for distribution, except as may be authorized by the applicable terms of use.

    CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.