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Ampicillin-associated diarrhea--A prospective study

The American Journal of Digestive Diseases
|April 1, 1975
PubMed

Insights

Ampicillin use in 200 patients altered bowel habits in 16% and caused diarrhea in 4.5%. Higher ampicillin doses increased these effects, with no pseudomembranous colitis observed.

Area of Science:

  • Gastroenterology
  • Infectious Diseases
  • Pharmacology

Background:

  • Antibiotic-associated diarrhea is a common clinical concern.
  • Pseudomembranous colitis is a severe complication linked to certain antibiotics.
  • Ampicillin is a widely used antibiotic with potential gastrointestinal side effects.

Purpose of the Study:

  • To investigate the incidence of altered bowel habits and diarrhea associated with ampicillin use.
  • To determine the relationship between ampicillin dosage and route of administration on gastrointestinal side effects.
  • To provide a comparative perspective for antibiotic-associated colitis.

Main Methods:

  • Prospective study design.
  • Inclusion of 200 consecutive patients receiving ampicillin.
  • Monitoring and recording of changes in bowel habits and occurrence of diarrhea.

Main Results:

  • 16% of patients experienced altered bowel habits.
  • 4.5% of patients developed diarrhea.
  • Increased total ampicillin dosage correlated with a higher incidence of altered bowel habits.
  • Both oral and intravenous routes of ampicillin administration showed similar incidences of altered bowel habits.
  • No cases of pseudomembranous colitis were identified.

Conclusions:

  • Ampicillin is associated with a notable incidence of altered bowel habits and diarrhea.
  • Dosage is a significant factor influencing ampicillin-induced gastrointestinal disturbances.
  • The findings offer a baseline for understanding the risks of other antibiotics, such as clindamycin, in causing colitis.

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