What is dextrose (D-glucose)?

Medical Advisory BoardAll articles are reviewed for accuracy by our Medical Advisory Board
Educational purpose only • Exercise caution as content is pending human review
Article Review Status
Submitted
Under Review
Approved

Last updated: April 30, 2025View editorial policy

Personalize

Help us tailor your experience

Which best describes you? Your choice helps us use language that's most understandable for you.

From the Guidelines

Dextrose is a form of glucose that can be administered intravenously to rapidly restore blood glucose levels, particularly in emergency situations such as hypoglycemia, as supported by the 2024 American Heart Association guidelines 1. When considering the use of dextrose, it's essential to understand its role in quickly raising blood sugar levels, which can be lifesaving in cases of untreated hypoglycemia that can lead to seizures, status epilepticus, permanent brain injury, and death 1. Key points about dextrose include:

  • It is the primary energy source for the body's cells
  • It comes in various concentrations for different medical uses, such as hydration and treating hypoglycemia
  • Intravenous dextrose can be particularly useful for individuals who are unable to swallow and are experiencing hypoglycemia, as it can provide immediate energy by rapidly converting to glucose and entering the bloodstream 1. In medical settings, the administration of dextrose, especially in cases of hypoglycemia, is critical for preventing severe outcomes, highlighting the importance of prompt intervention with intravenous dextrose when oral glucose administration is not possible 1.

From the FDA Drug Label

Dextrose, USP is chemically designated C6H12O6 ∙ H2O (D-glucose monohydrate), a hexose sugar freely soluble in water. Dextrose is a hexose sugar, also known as D-glucose monohydrate, with the chemical designation C6H12O6 ∙ H2O 2.

From the Research

Definition of Dextrose

  • Dextrose is a type of sugar that is commonly used in medical settings, particularly in parenteral nutrition (PN) and enteral nutrition (EN) 3, 4, 5, 6, 7.
  • It is a dextrose-based solution that provides calories and energy to patients who are unable to consume food orally.

Use of Dextrose in Medical Settings

  • Dextrose is often used in PN to provide patients with the necessary nutrients and energy 3, 6.
  • The amount of dextrose delivered via PN can be associated with the development of hyperglycemia in critically ill patients without a history of diabetes mellitus 3.
  • Reducing the dextrose concentration in PN or using a hypocaloric PN formula can help prevent hyperglycemia and associated adverse outcomes 4, 5.

Hyperglycemia and Dextrose

  • Hyperglycemia is a common problem in hospitalized patients receiving artificial nutrition, including those receiving dextrose-based PN or EN 4, 5, 6, 7.
  • The development of hyperglycemia during PN therapy increases the risks of hospital-related complications and mortality 3, 7.
  • Insulin therapy is often used to manage hyperglycemia in patients receiving dextrose-based PN or EN 4, 5, 7.

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

Glycemic Management of Hospitalized Patients Receiving Nutrition Support.

Diabetes spectrum : a publication of the American Diabetes Association, 2022

Research

THE MANAGEMENT OF HYPERGLYCEMIA IN NONCRITICALLY ILL HOSPITALIZED PATIENTS TREATED WITH CONTINUOUS ENTERAL OR PARENTERAL NUTRITION.

Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists, 2018

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

Have a follow-up question?

Our Medical A.I. is used by practicing medical doctors at top research institutions around the world. Ask any follow up question and get world-class guideline-backed answers instantly.