Alfenta Solution Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Severe expression

  • Apnea, A Breathing Interruption
  • Decreased Lung Function
  • Low Blood Pressure
  • Slow Heartbeat

If experienced, these tend to have a Less Severe expression

  • Drowsiness
  • Muscle Stiffness
  • Nausea
  • Vomiting

INFREQUENT side effects


If experienced, these tend to have a Severe expression

  • Abnormal Heart Rhythm
  • High Blood Pressure

If experienced, these tend to have a Less Severe expression

  • Blurred Vision
  • Dizziness
  • Fast Heartbeat
  • Opioid Induced Allodynia
  • Opioid Induced Hyperalgesia

RARE side effects


If experienced, these tend to have a Severe expression

  • A Feeling Of Pins And Needles On Skin
  • A Hypersensitivity Reaction To A Drug
  • A Significant Type Of Allergic Reaction Called Anaphylaxis
  • A Spasm Of The Larynx
  • Addiction To A Drug
  • Bronchospastic Lung Disease
  • Decreased Function Of The Adrenal Gland
  • Deficiency Of A Substance That Promotes Masculinization
  • Delirium
  • Depression
  • Inflammation Of The Skin Due To An Allergy
  • Myoclonus, Quick And Involuntary Muscle Jerks
  • Neck Stiffness
  • Over Excitement
  • Seizures

If experienced, these tend to have a Less Severe expression

  • A Change In Vision
  • A Spasm Of The Ureter
  • Abnormal Nervous System Function Affecting Alertness
  • Accidental Falls
  • Agitation
  • Altered Interest In Having Sexual Intercourse
  • An Extreme Sense Of Wellbeing Called Euphoria
  • Chills
  • Confusion
  • Constipation
  • Double Vision
  • Headache
  • Hives
  • Infertility
  • Itching
  • Orthostatic Hypotension, A Form Of Low Blood Pressure
  • Reactions At The Site Of The Injection
  • Spasm Of A Bile Duct Tract
  • The Inability To Have An Erection
  • Widening Of Blood Vessels

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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.