Alfentanil Injection Side Effects by Likelihood and Severity

COMMON side effects

If experienced, these tend to have a Severe expression i

  • slow heartbeat
  • low blood pressure
  • decreased lung function
  • apnea, a breathing interruption
  • If experienced, these tend to have a Less Severe expression i

  • muscle stiffness
  • drowsiness
  • nausea
  • vomiting
  • INFREQUENT side effects

    If experienced, these tend to have a Severe expression i

  • high blood pressure
  • abnormal heart rhythm
  • If experienced, these tend to have a Less Severe expression i

  • blurred vision
  • dizziness
  • fast heartbeat
  • RARE side effects

    If experienced, these tend to have a Severe expression i

  • decreased function of the adrenal gland
  • deficiency of a substance that promotes masculinization
  • over excitement
  • addiction to a drug
  • depression
  • myoclonus, quick and involuntary muscle jerks
  • a spasm of the larynx
  • bronchospastic lung disease
  • inflammation of the skin due to an allergy
  • neck stiffness
  • delirium
  • seizures
  • a significant type of allergic reaction called anaphylaxis
  • a hypersensitivity reaction to a drug
  • a feeling of pins and needles on skin
  • If experienced, these tend to have a Less Severe expression i

  • agitation
  • an extreme sense of wellbeing called euphoria
  • double vision
  • a change in vision
  • orthostatic hypotension, a form of low blood pressure
  • widening of blood vessels
  • constipation
  • spasm of a bile duct tract
  • a spasm of the ureter
  • the inability to have an erection
  • chills
  • headache
  • abnormal nervous system function affecting alertness
  • reactions at the site of the injection
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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.