Fiorinal Side Effects by Likelihood and Severity

COMMON side effects

If experienced, these tend to have a Less Severe expression

  • Conditions Of Excess Stomach Acid Secretion
  • Difficulty Sleeping
  • Dizziness
  • Drowsiness
  • Heartburn
  • Irritation Of The Stomach Or Intestines
  • Nausea
  • Nervousness
  • Stomach Cramps
  • Vomiting

INFREQUENT side effects

If experienced, these tend to have a Severe expression

  • Confusion
  • Low Energy And Weakness
  • Over Excitement

If experienced, these tend to have a Less Severe expression

  • Anxious Feelings
  • Constipation
  • Depression
  • Difficulty Sleeping
  • Fainting
  • Headache
  • Irritability
  • Nausea
  • Nervousness
  • Nightmares
  • Over Excitement
  • Sensation Of Spinning Or Whirling
  • Vomiting

RARE side effects

If experienced, these tend to have a Severe expression

  • A Decrease In Platelet Clotting
  • A Feeling Of Throat Tightness
  • A Hypersensitivity Reaction To A Drug
  • A Rupture In The Wall Of The Stomach Or Intestine
  • A Significant Type Of Allergic Reaction Called Anaphylaxis
  • A Skin Disorder With Blistering And Peeling Skin Called Stevens-Johnson Syndrome
  • A Skin Rash
  • A Type Of Allergic Reaction Called Angioedema
  • A Type Of Blood Disorder Where The Red Blood Cells Burst Called Hemolytic Anemia
  • A Type Of Kidney Inflammation Called Interstitial Nephritis
  • Accidental Falls
  • Anemia
  • Apnea, A Breathing Interruption
  • Bleeding
  • Bleeding Of The Stomach Or Intestines
  • Bleeding Within The Skull
  • Blistering Of The Skin
  • Blood Coming From Anus
  • Bronchospasm
  • Damage To The Liver And Inflammation
  • Decreased Alertness Or Consciousness
  • Decreased Blood Platelets
  • Decreased Calcification Or Density Of Bone
  • Extra Heartbeats
  • Hallucinations
  • Hives
  • Inflammation Of The Skin Due To An Allergy
  • Large Purple Or Brown Skin Blotches
  • Low Blood Pressure
  • Low Levels Of White Blood Cells
  • Megaloblastic Anemia
  • Memory Loss
  • Mental Problems
  • Rickets
  • Seizures
  • Skin Rash With Sloughing
  • Slow And Shallow Breathing
  • Slow Heartbeat
  • Stomach Or Intestinal Ulcer
  • Trouble Breathing
  • Very Low Levels Of Granulocytes, A Type Of White Blood Cell
  • Wheezing

If experienced, these tend to have a Less Severe expression

  • A Skin Rash
  • A Type Of Stomach Irritation Called Gastritis
  • Abnormal Liver Function Tests
  • Abnormal Nervous System Function Affecting Alertness
  • Addiction To A Drug
  • Agitation
  • Anxious Feelings
  • Black Tarry Stools
  • Bleeding Gums
  • Blind Spot In The Eye
  • Complex Sleep Behaviors Like Eating Or Driving While Asleep
  • Damage To The Kidneys
  • Decreased Appetite
  • Drowsiness
  • Erythema Or Skin Redness
  • Fast Heartbeat
  • Hematoma, A Collection Of Blood Outside Of The Blood Vessels
  • High Blood Sugar
  • Hyperactive Behavior
  • Hyperesthesia, An Increased Nerve Sensitivity
  • Indigestion
  • Irritability
  • Itching
  • Loss Of Muscle Coordination
  • Muscle Tremors
  • Nausea
  • Nosebleed
  • Problems Thinking Clearly
  • Ringing In The Ears
  • Ringing In The Ears
  • Vomiting
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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.