Phenhist Oral 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

  • constipation
  • drowsiness
  • inducing of a relaxed easy state
  • excessive sweating
  • nausea
  • vomiting
  • stomach cramps
  • difficulty sleeping
  • headache

    • INFREQUENT side effects

    If experienced, these tend to have a Severe expression i

  • orthostatic hypotension, a form of low blood pressure
  • low blood pressure
  • a complete or partial collapse of the lung airways called atelectasis
  • decreased lung function
  • trouble breathing
  • abnormal nervous system function affecting alertness

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

  • a change in vision
  • dry mouth
  • fainting
  • dizziness
  • decreased appetite
  • headache
  • heart throbbing or pounding
  • decreased urine production
  • nervousness
  • generalized weakness
  • feelings of dissatisfaction, sadness, and unease
  • agitation
  • drowsiness
  • muscle tremors
  • loss of skin color
  • nausea
  • difficult or painful urination
  • 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
  • dependence on opioid-type drugs
  • addiction to a drug
  • complete stoppage of the heart
  • slow heartbeat
  • lung failure causing loss of breath
  • blocked bowels with decreased peristaltic movement
  • seizures
  • sleep apnea
  • a condition where the body is unable to maintain adequate blood flow called shock
  • a significant type of allergic reaction called anaphylaxis
  • accidental falls
  • pancreatitis
  • high blood pressure
  • insufficient blood supply to the colon
  • hallucinations
  • trouble breathing
  • vomiting
  • a type of skin disorder called acute generalized exanthematous pustulosis

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

  • an extreme sense of wellbeing called euphoria
  • depression
  • widening of blood vessels
  • irritation of the stomach or intestines
  • spasm of a bile duct tract
  • the inability to have an erection
  • sensation of spinning or whirling
  • difficulty sleeping
  • low energy
  • temporary redness of face and neck
  • diarrhea
  • anxious feelings
  • opioid induced hyperalgesia
  • opioid induced allodynia
  • nausea
  • vomiting
  • over excitement
  • indigestion
  • excessive sweating
  • heart throbbing or pounding
    • Full Drug Information

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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.