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Methanol Toxicity Treatment & Management

  • Author: Kalyani Korabathina, MD; Chief Editor: Tarakad S Ramachandran, MBBS, MBA, MPH, FAAN, FACP, FAHA, FRCP, FRCPC, FRS, LRCP, MRCP, MRCS  more...
Updated: Mar 30, 2016

Approach Considerations

Prompt medical care is key to avoiding complications secondary to methanol intoxication. Supportive therapy is aimed at initiating airway management, correcting electrolyte disturbances, and providing adequate hydration.

Metabolic acidosis in methanol poisoning may necessitate the administration of bicarbonate and assisted ventilation. Bicarbonate potentially may reverse visual deficits. In addition, bicarbonate may help to decrease the amount of active formic acid.

Antidote therapy, often using ethanol or fomepizole, is directed towards delaying methanol metabolism until the methanol is eliminated from the patient’s system either naturally or via dialysis. Like methanol, ethanol is metabolized by ADH, but the enzyme’s affinity for ethanol is 10-20 times higher than it is for methanol. Fomepizole is also metabolized by ADH; however, its use is limited because of high cost and lack of availability.[8, 20, 21]

Hemodialysis can easily remove methanol and formic acid. Indications for this procedure include (1) greater than 30mL of methanol ingested, (2) serum methanol level greater than 20 mg/dL, (3) observation of visual complications, and (4) no improvement in acidosis despite repeated sodium bicarbonate infusions.


Consultation with the following specialists can be beneficial:

  • Nephrologist - Consultation with a nephrologist is advisable to aid in the correction of the metabolic disturbance; the nephrologist can also help to arrange dialysis, respiratory care, or both
  • Ophthalmologist - Consultation with an ophthalmologist is recommended for assessment of ocular damage
  • Neurologist - Consultation with a neurologist is arranged to assist with the management of seizures in the acute setting or with the treatment of any subsequent movement disorders that may develop
Contributor Information and Disclosures

Kalyani Korabathina, MD Consulting Physician, North County Neurology Associates, Inc

Kalyani Korabathina, MD is a member of the following medical societies: American Academy of Neurology, American Epilepsy Society

Disclosure: Nothing to disclose.


David Likosky, MD Director of Stroke Program, President of Medical Staff, Evergreen Hospital Medical Center

David Likosky, MD is a member of the following medical societies: American Academy of Neurology, American College of Physicians-American Society of Internal Medicine, American Heart Association

Disclosure: Nothing to disclose.

Selim R Benbadis, MD Professor, Director of Comprehensive Epilepsy Program, Departments of Neurology and Neurosurgery, Tampa General Hospital, University of South Florida College of Medicine

Selim R Benbadis, MD is a member of the following medical societies: American Academy of Neurology, American Medical Association, American Academy of Sleep Medicine, American Clinical Neurophysiology Society, American Epilepsy Society

Disclosure: Serve(d) as a director, officer, partner, employee, advisor, consultant or trustee for: Cyberonics; Eisai; Lundbeck; Sunovion; UCB; Upsher-Smith<br/>Serve(d) as a speaker or a member of a speakers bureau for: Cyberonics; Eisai; Glaxo Smith Kline; Lundbeck; Sunovion; UCB<br/>Received research grant from: Cyberonics; Lundbeck; Sepracor; Sunovion; UCB; Upsher-Smith.

Chief Editor

Tarakad S Ramachandran, MBBS, MBA, MPH, FAAN, FACP, FAHA, FRCP, FRCPC, FRS, LRCP, MRCP, MRCS Professor Emeritus of Neurology and Psychiatry, Clinical Professor of Medicine, Clinical Professor of Family Medicine, Clinical Professor of Neurosurgery, State University of New York Upstate Medical University; Neuroscience Director, Department of Neurology, Crouse Irving Memorial Hospital

Tarakad S Ramachandran, MBBS, MBA, MPH, FAAN, FACP, FAHA, FRCP, FRCPC, FRS, LRCP, MRCP, MRCS is a member of the following medical societies: American College of International Physicians, American Heart Association, American Stroke Association, American Academy of Neurology, American Academy of Pain Medicine, American College of Forensic Examiners Institute, National Association of Managed Care Physicians, American College of Physicians, Royal College of Physicians, Royal College of Physicians and Surgeons of Canada, Royal College of Surgeons of England, Royal Society of Medicine

Disclosure: Nothing to disclose.


Nestor Galvez-Jimenez, MD, MSc, MHA Chairman, Department of Neurology, Program Director, Movement Disorders, Department of Neurology, Division of Medicine, Cleveland Clinic Florida

Nestor Galvez-Jimenez, MD, MSc, MHA is a member of the following medical societies: American Academy of Neurology, American College of Physicians, and Movement Disorders Society

Disclosure: Nothing to disclose.

Jonathan S Rutchik, MD, MPH Assistant Professor, Department of Occupational and Environmental Medicine, University of California at San Francisco

Jonathan S Rutchik, MD, MPH is a member of the following medical societies: American Academy of Neurology, American Association of Neuromuscular and Electrodiagnostic Medicine, American College of Occupational and Environmental Medicine, and Society of Toxicology

Disclosure: Nothing to disclose.

Francisco Talavera, PharmD, PhD Adjunct Assistant Professor, University of Nebraska Medical Center College of Pharmacy; Editor-in-Chief, Medscape Drug Reference

Disclosure: Medscape Salary Employment

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