Fosphenytoin SODIUM Vial Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Severe expression

  • A Toxic Effect On The Central Nervous System, Which Consists Of The Brain And Spinal Cord

If experienced, these tend to have a Less Severe expression

  • A Skin Rash
  • Dizziness
  • Drowsiness
  • Itching
  • Loss Of Muscle Coordination
  • Low Blood Pressure
  • Nausea
  • Nystagmus, A Condition With Involuntary Eye Movements

INFREQUENT side effects


If experienced, these tend to have a Severe expression

  • Abnormal Liver Function Tests
  • Extrapyramidal Disease, A Type Of Movement Disorder
  • Fluid Accumulation In The Brain
  • High Blood Pressure
  • High Pressure Within The Skull
  • Low Amount Of Potassium In The Blood
  • Pneumonia
  • Reactions At The Site Of The Injection
  • Slurred Speech
  • Swelling Of The Tongue

If experienced, these tend to have a Less Severe expression

  • A Feeling Of Pins And Needles On Skin
  • A Fever As A Result Of Taking The Medication
  • A Type Of Speech Disorder Called Dysarthria
  • Agitation
  • Backache
  • Bruising Under The Skin
  • Chills
  • Confusion
  • Constipation
  • Double Vision
  • Dry Mouth
  • Exaggerated Deep Reflexes
  • Fast Heartbeat
  • Generalized Weakness
  • Headache
  • Muscle Tremors
  • Muscle Weakness
  • Nervousness
  • Numbness
  • Pelvic Pain
  • Problems Thinking Clearly
  • Puffy Face From Water Retention
  • Ringing In The Ears
  • Sensation Of Spinning Or Whirling
  • Stupor
  • Taste Impairment
  • Toxic Amblyopia, A Loss Of Vision
  • Vomiting
  • Weak Reflexes

RARE side effects


If experienced, these tend to have a Severe expression

  • A Clot In The Lung
  • A Disorder Of The Body's Use Of Calcium
  • A Hypersensitivity Reaction To A Drug
  • A Significant Type Of Allergic Reaction Called Anaphylaxis
  • A Skin Disorder With Blistering And Peeling Skin Called Stevens-Johnson Syndrome
  • A Skin Disorder With Blistering And Peeling Skin Called Toxic Epidermal Necrolysis
  • A Type Of Abnormal Movement Disorder Called Dyskinesia
  • A Type Of Allergic Reaction Called Angioedema
  • A Type Of Blood Disorder With A Decrease In All Types Of Blood Cells Called Pancytopenia
  • A Type Of Significant Allergic Skin Reaction Called DRESS Syndrome
  • A Type Of Skin Disorder Called Acute Generalized Exanthematous Pustulosis
  • A Type Of Slowed Heart Rhythm Disorder Called Heart Block
  • A Yellowing Of The Eyes Or Skin From Buildup Of Bilirubin Called Jaundice
  • Acute Liver Failure
  • Anemia
  • Decreased Blood Platelets
  • Hearing Loss
  • High Blood Sugar
  • Increased Eosinophils In The Blood
  • Inflammation Of The Liver Called Hepatitis
  • Inflammation Of The Middle Tissue Heart Muscle
  • Kidney Failure
  • Kidney Inflammation
  • Low Amount Of Phosphate In The Blood
  • Low Levels Of Granulocytes, A Type Of White Blood Cell
  • Low Levels Of White Blood Cells
  • Megaloblastic Anemia
  • Multiple Organ Failure
  • Muscle Inflammation
  • Purple Glove Syndrome, A Skin Condition Where The Extremities Become Swollen, Purple And Painful
  • Significantly Low Blood Pressure
  • Slow Heartbeat
  • Swollen Lymph Nodes
  • Toxicity To The Nerve That Controls Hearing
  • Ventricular Arrhythmias, A Type Of Abnormal Heart Rhythm
  • Very Low Levels Of Granulocytes, A Type Of White Blood Cell

If experienced, these tend to have a Less Severe expression

  • A Distorted Sense Of Smell Called Parosmia
  • A Feeling Of Restlessness With Inability To Sit Still
  • A Yeast Infection Of The Vagina And Vulva
  • Abnormally Large Red Blood Cells Called Macrocytosis
  • Accidental Falls
  • Accumulation Of Fluid Or Edema In The Male Genitals
  • An Earache
  • An Inability To Completely Empty The Bladder
  • Aphasia, A Loss Of The Ability To Speak And Understand Language
  • Decreased Urine Production
  • Diarrhea
  • Difficult Or Painful Urination
  • Difficulty Sleeping
  • Dilated Pupils
  • Elevation Of Proteins In The Urine
  • Excess Urination
  • Excessive Sweating
  • Feelings Of Hostility
  • Hives
  • Hyperesthesia, An Increased Nerve Sensitivity
  • Inadequate Folic Acid
  • Indigestion
  • Inflammation Or Infection Of The Vagina
  • Involuntary Leakage Of Urine
  • Leg Cramps
  • Memory Loss
  • Mood Changes
  • Muscle Twitching
  • Porphyria
  • Skin Discoloration
  • Small Reddish-Purplish Pin-Point Sized Spots On Skin
  • Urethritis, Or Inflammation Of The Tube That Brings Urine From The Bladder
  • Visible Water Retention
  • Visual Sensitivity To Light
  • Weakness And Wasting Of The Body

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.