Related Experiment Video
Updated: Jul 7, 2026

12:08
Improving IV Insulin Administration in a Community Hospital
Published on: June 11, 2012
19.0K
Risk for hypoglycemic emergency with levofloxacin use, a population-based propensity score matched nested
Shu-Hui Liao1, Sung-Yuan Hu2,3, Chorng-Kuang How4,5,6
1Department of Pathology and Laboratory, Taipei Veterans General Hospital, Taoyuan Branch, Taoyuan, Taiwan.
Plos One
|April 4, 2022
Summary
Oral levofloxacin use significantly increases the risk of hypoglycemic emergency (HE) in type 2 diabetes (T2D) patients. Caution is advised, especially when combined with insulin or sulfonylurea.
Area of Science:
- Pharmacovigilance
- Epidemiology
- Diabetology
Background:
- Oral levofloxacin is a commonly prescribed antibiotic.
- An established potential association exists between levofloxacin and hypoglycemic emergencies (HE).
- Large-scale epidemiological data are needed to confirm this association in type 2 diabetes (T2D) patients.
Purpose of the Study:
- To investigate the association between oral levofloxacin use and the risk of HE in T2D patients.
- To compare the risk of HE associated with levofloxacin against other antibiotic classes.
- To evaluate the combined risk of levofloxacin with common T2D medications.
Main Methods:
- A nested case-control study using a nationwide database (1999-2013) of 1.6 million T2D patients.
- Cases were T2D patients with HE, controls were T2D patients without HE, matched by propensity score (10:1 ratio).
- Multivariate logistic regression analysis was employed, adjusting for T2D severity.
Main Results:
- Antibiotic use was associated with a 6.08-fold increased risk of HE.
- Fluoroquinolones (aOR=12.05) and sulfonamides (aOR=7.20) showed the highest HE risks.
- Levofloxacin use demonstrated a significantly higher risk of HE compared to cephalosporins and penicillin.
- Combined use of levofloxacin with insulin (aOR=8.42) or sulfonylurea (aOR=3.56) further increased HE risk.
Conclusions:
- Oral levofloxacin use is significantly associated with an increased risk of HE in T2D patients.
- The risk is notably higher compared to other commonly used antibiotics.
- Prescribers should exercise caution when prescribing levofloxacin, particularly for patients on insulin or sulfonylurea therapy.
Related Concept Videos
Drug Dosing: Obese Patients
In the United States, obesity is a prominent concern. It is linked to heightened mortality rates due to increased occurrences of conditions such as hypertension, atherosclerosis, coronary artery disease, and diabetes compared to nonobese individuals. A patient is classified as obese if their actual body weight surpasses the ideal or desirable body weight by 20%, based on Metropolitan Life Insurance Company data. Ideal body weights consider average weights and heights for males and females...
Drug Toxicity: Risk factors
Adverse Drug Reactions (ADRs) are potential complications that arise during pharmacotherapy, influenced by multiple risk factors. Age plays a significant role; both neonates and the elderly are at heightened risk due to their respective immature and diminished metabolic and elimination processes. Gender also impacts ADRs, with females experiencing a 1.5 to 1.7-fold greater risk than males, which may be linked to pharmacokinetic, pharmacodynamic, and hormonal differences. Notably, neonates, the...
Oral Hypoglycemic Agents: Sulfonylureas
Sulfonylureas are oral hypoglycemic agents utilized in treating type 2 diabetes. They are characterized by their unique sulfonylurea chemical structure. The family of sulfonylureas is divided into generations. First-generation sulfonylureas, including tolbutamide (Orinase), chlorpropamide (Diabinese), and tolazamide (Tolinase), trigger insulin release from pancreatic β cells and enhance peripheral tissues' insulin sensitivity. The second-generation members, such as glipizide (Glucotrol),...
Hypoglycemia and Glucagon
Without prolonged fasting, healthy individuals maintain blood glucose levels above 3.5 mM due to a well-adapted neuroendocrine counterregulatory system that effectively prevents acute hypoglycemia, a potentially life-threatening condition. The primary clinical scenarios for hypoglycemia encompass diabetes treatment, inappropriate production of endogenous insulin or insulin-like substances by tumors, and the use of glucose-lowering agents in non-diabetic individuals. Notably, hypoglycemia in the...
Relative Risk
Relative risk (RR) is a statistical measure commonly used in epidemiology to compare the likelihood of a particular event occurring between two groups. This metric is important for evaluating the relationship between exposure to a specific risk factor and the probability of a particular outcome. It plays a crucial role in medical research, public health studies, and risk assessment. Relative risk quantifies how much more (or less) likely an event is to occur in an exposed group compared to an...
Hyperglycemia
Hyperglycemia is an abnormally high blood glucose level. It is diagnosed by fasting glucose ≥126 mg/dL, 2-hour oral glucose tolerance test (or OGTT) ≥200 mg/dL, random glucose ≥200 mg/dL with symptoms, or HbA1c ≥6.5%. However, HbA1c results may be unreliable in certain conditions, such as anemia or hemoglobinopathies, and the diagnosis should be confirmed unless classic symptoms are present. Postprandial hyperglycemia is typically considered significant when glucose levels exceed 180 mg/dL two...

