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Fructose 1,6-Diphosphatase Deficiency Treatment & Management

  • Author: Sunil Sinha, MD; Chief Editor: Maria Descartes, MD  more...
Updated: Nov 03, 2015

Medical Care

Complete avoidance of fructose, its cognate sugars (eg, sorbitol) and prolonged fasting prevents hypoglycemia and lactic acidosis. Nevertheless, ingestion of small amounts of fructose and related sugars may be tolerated in most patients with fructose 1,6-diphosphatase (FDPase) deficiency. No other specific medical therapy is required.

Patients may only exhibit hepatomegaly during the metabolic crisis, which resolves promptly with administration of dextrose.

Parenteral administration of fructose or sorbitol to a patient with FDPase deficiency can be fatal.

Sorbitol is a constituent of many basic foodstuffs and some sugarless chewing gums. The oral bioavailability of sorbitol from routine gum use is usually clinically insignificant. However, use and susceptibility to exposure widely vary; thus, sorbitol should be avoided by patients with FDPase deficiency whenever possible.



Consultation with a pediatric endocrinologist or metabolism specialist is recommended.



Avoidance of fructose, cognate sugars, and prolonged fasting usually is sufficient to prevent hypoglycemia and lactic acidosis, particularly during febrile illness.

Contributor Information and Disclosures

Sunil Sinha, MD Assistant Professor, Division of Pediatric Endocrinology and Metabolism, Department of Pediatrics, University of Tennessee Health Science Center

Sunil Sinha, MD is a member of the following medical societies: American Academy of Pediatrics, American Association of Clinical Endocrinologists, Endocrine Society, Pediatric Endocrine Society

Disclosure: Nothing to disclose.

Specialty Editor Board

Mary L Windle, PharmD Adjunct Associate Professor, University of Nebraska Medical Center College of Pharmacy; Editor-in-Chief, Medscape Drug Reference

Disclosure: Nothing to disclose.

David Flannery, MD, FAAP, FACMG Vice Chair of Education, Chief, Section of Medical Genetics, Professor, Department of Pediatrics, Medical College of Georgia

David Flannery, MD, FAAP, FACMG is a member of the following medical societies: American Academy of Pediatrics, American College of Medical Genetics and Genomics

Disclosure: Nothing to disclose.

Chief Editor

Maria Descartes, MD Professor, Department of Human Genetics and Department of Pediatrics, University of Alabama at Birmingham School of Medicine

Maria Descartes, MD is a member of the following medical societies: American Academy of Pediatrics, American College of Medical Genetics and Genomics, American Medical Association, American Society of Human Genetics, Society for Inherited Metabolic Disorders, International Skeletal Dysplasia Society, Southeastern Regional Genetics Group

Disclosure: Nothing to disclose.

Additional Contributors

Michael Fasullo, PhD Senior Scientist, Ordway Research Institute; Associate Professor, State University of New York at Albany; Adjunct Associate Professor, Center for Immunology and Microbial Disease, Albany Medical College

Michael Fasullo, PhD is a member of the following medical societies: Radiation Research Society, American Society for Biochemistry and Molecular Biology, Genetics Society of America, Environmental Mutagenesis and Genomics Society

Disclosure: Nothing to disclose.


Robert J Ferry Jr, MD Le Bonheur Chair of Excellence in Endocrinology, Professor and Chief, Division of Pediatric Endocrinology and Metabolism, Department of Pediatrics, University of Tennessee Health Science Center

Robert J Ferry Jr, MD is a member of the following medical societies: American Academy of Pediatrics, American Diabetes Association, American Medical Association, Endocrine Society, Pediatric Endocrine Society, Society for Pediatric Research, and Texas Pediatric Society

Disclosure: Eli Lilly & Co Grant/research funds Investigator; MacroGenics, Inc Grant/research funds Investigator; Ipsen, SA (formerly Tercica, Inc) Grant/research funds Investigator; NovoNordisk SA Grant/research funds Investigator; Diamyd Grant/research funds Investigator; Bristol-Myers-Squibb Grant/research funds Other; Amylin Other; Pfizer Grant/research funds Other; Takeda Grant/research funds Other

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