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Antibiotic enterocolitis — Clinical Guidelines

Overview

Antibiotic enterocolitis refers to inflammation of the intestines caused by adverse reactions to antibiotics, often manifesting as colitis with symptoms like diarrhea, abdominal pain, and sometimes bloody stools. This condition highlights the broader issue of antibiotic-associated adverse drug reactions (ADRs) impacting patient safety and necessitating vigilant pharmacovigilance 1 4 5 6 8 9.

Diagnosis

Clinical Presentation: Diarrhea, abdominal pain, fever, and in severe cases, bloody stools 6 8.

Laboratory Tests: Stool cultures to rule out infectious causes; however, negative results do not exclude antibiotic-associated enterocolitis 6.

Imaging: Abdominal imaging may show nonspecific findings but can help rule out other conditions 6.

Histopathology: Colonoscopy with biopsy may reveal characteristic histopathological changes 14.

Management

Discontinuation of Antibiotics: Immediate cessation of the offending antibiotic 6 8.

Supportive Care: Fluid resuscitation, electrolyte management, and symptomatic treatment 6 8.

Probiotics: Consideration for use to restore gut microbiota balance 15.

Antidiarrheal Agents: Use cautiously; loperamide may be considered for non-bloody diarrhea 14.

Special Populations

Pediatrics: Higher rates of emergency department visits for antibiotic-associated adverse events; careful monitoring and judicious antibiotic use are crucial 6.

Elderly: Increased susceptibility to ADRs; close surveillance and individualized treatment plans are recommended 8.

Comorbidities: Patients with underlying gastrointestinal conditions may require more aggressive monitoring and management 13.

Key Recommendations

Enhance Pharmacovigilance: Implement robust pharmacovigilance systems to monitor and report antibiotic-associated adverse events effectively (Evidence: Moderate 1 4).

Judicious Antibiotic Use: Prescribe antibiotics judiciously, avoiding unnecessary use to minimize the risk of adverse reactions including enterocolitis (Evidence: Strong 18).

Prompt Recognition and Management: Recognize early signs of antibiotic-associated enterocolitis and promptly discontinue the causative antibiotic while providing supportive care (Evidence: Moderate 6 8).

Educate Healthcare Providers: Enhance education on antibiotic stewardship and recognition of ADRs among healthcare providers to improve patient outcomes (Evidence: Expert opinion 11 12).

References

1 Mitchell J, Westerberg C, Purohit M, Lundquist P, Stålsby Lundborg C. The enhancing role of pharmacovigilance to conventional antibiotic resistance surveillance: cross-sectional identification and analysis of reports of antibiotic resistance in VigiBase. International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases 2025. link 2 Yang L, Zhang W, Shen X, Liu M, Wu M, Xiao D. Fosfomycin-associated adverse events: A disproportionality analysis of the FDA Adverse Event Reporting System. Drug discoveries & therapeutics 2025. link 3 Ferraro S, Cappello E, Fornili M, Convertino I, Bonaso M, Lucenteforte E et al.. Signals of Possibly Persistent Gustatory, Olfactory and Auditory Adverse Drug Reactions to Antibiotic Drugs: A Disproportionality Analysis Using the EudraVigilance Database. Drug safety 2025. link 4 Tran HN, Nguyen TNT, Tran NTK, Nguyen LT, Vu HD, Nguyen AH et al.. Preventability of Adverse Drug Reactions Related to Antibiotics: An Assessment Based on Spontaneous Reporting System. Therapeutic innovation & regulatory science 2023. link 5 Geitona M, Toska A, Latsou D, Saridi M. Detection and Reporting of Adverse Drug Reactions Related to Antibiotics in Primary Healthcare in Greece. Current drug safety 2022. link 6 Lovegrove MC, Geller AI, Fleming-Dutra KE, Shehab N, Sapiano MRP, Budnitz DS. US Emergency Department Visits for Adverse Drug Events From Antibiotics in Children, 2011-2015. Journal of the Pediatric Infectious Diseases Society 2019. link 7 Wall GC, Taylor MJ, Smith HL. Prevalence and characteristics of hospital inpatients with reported fluoroquinolone allergy. International journal of clinical pharmacy 2018. link 8 Geller AI, Lovegrove MC, Shehab N, Hicks LA, Sapiano MRP, Budnitz DS. National Estimates of Emergency Department Visits for Antibiotic Adverse Events Among Adults-United States, 2011-2015. Journal of general internal medicine 2018. link 9 Jung IY, Kim JJ, Lee SJ, Kim J, Seong H, Jeong W et al.. Antibiotic-Related Adverse Drug Reactions at a Tertiary Care Hospital in South Korea. BioMed research international 2017. link 10 Fernández F, Pinacho DG, Gratacós-Cubarsí M, García-Regueiro JA, Castellari M, Sánchez-Baeza F et al.. Immunochemical determination of fluoroquinolone antibiotics in cattle hair: a strategy to ensure food safety. Food chemistry 2014. link 11 Dyar OJ, Howard P, Nathwani D, Pulcini C. Knowledge, attitudes, and beliefs of French medical students about antibiotic prescribing and resistance. Medecine et maladies infectieuses 2013. link 12 Navarro-San Francisco C, Del Toro MD, Cobo J, De Gea-García JH, Vañó-Galván S, Moreno-Ramos F et al.. Knowledge and perceptions of junior and senior Spanish resident doctors about antibiotic use and resistance: results of a multicenter survey. Enfermedades infecciosas y microbiologia clinica 2013. link 13 Ajantha GS, Hegde V. Antibacterial drug resistance and its impact on dentistry. The New York state dental journal 2012. link 14 Diaz L, Ciurea AM. Cutaneous and systemic adverse reactions to antibiotics. Dermatologic therapy 2012. link 15 Rosen T. Antibiotic resistance: an editorial review with recommendations. Journal of drugs in dermatology : JDD 2011. link 16 Shehab N, Patel PR, Srinivasan A, Budnitz DS. Emergency department visits for antibiotic-associated adverse events. Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 2008. link 17 Jing Y, Kelton CM, Li X, Guo JJ. Lethal drug probe in China: the case of Xinfu clindamycin. Pharmacoepidemiology and drug safety 2007. link 18 Collignon PJ. 11: Antibiotic resistance. The Medical journal of Australia 2002. link 19 Pallasch TJ. Global antibiotic resistance and its impact on the dental community. Journal of the New Jersey Dental Association 2000. link 20 Concordet D, Nunez OG. Calibration for nonlinear mixed effects models: an application to the withdrawal time prediction. Biometrics 2000. link

Antibiotic enterocolitis