PROMETHAZINE HCL Side Effects by Likelihood and Severity

COMMON side effects

If experienced, these tend to have a Severe expression i

  • low blood pressure
  • fast heartbeat

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

  • confusion
  • over excitement
  • nightmares
  • blurred vision
  • a change in vision
  • ringing in the ears
  • an increase in the thickness of lung secretions
  • dry mouth
  • increased sensitivity of the skin to the sun
  • drowsiness
  • dizziness
  • a skin rash
  • nervousness
  • irritability

INFREQUENT side effects

If experienced, these tend to have a Severe expression i

  • inducing of a relaxed easy state

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

  • stuffy nose
  • fainting
  • excessive sweating

RARE side effects

If experienced, these tend to have a Severe expression i

  • decreased blood platelets
  • very low levels of granulocytes, a type of white blood cell
  • low levels of white blood cells
  • dissociation
  • extrapyramidal disease, a type of movement disorder
  • neuroleptic malignant syndrome, a reaction characterized by fever, muscle rigidity and confusion
  • high blood pressure
  • slow heartbeat
  • prolonged QT interval on EKG
  • thrombotic thrombocytopenic purpura, a type of blood disorder
  • asthma
  • decreased lung function
  • a blockage of the bile duct that resulting in high bilirubin levels
  • hives
  • delirium
  • hallucinations
  • seizures
  • apnea, a breathing interruption
  • a type of allergic reaction called angioedema
  • a yellowing of the eyes or skin from buildup of bilirubin called jaundice

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

  • an extreme sense of wellbeing called euphoria
  • skin inflammation
  • difficulty sleeping
  • low energy
  • muscle tremors
  • loss of muscle coordination
  • decreased appetite
  • nausea
  • vomiting
  • difficult or painful urination

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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.