Is Augmentin (amoxicillin/clavulanate) contraindicated in pregnancy?

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From the Guidelines

Augmentin (amoxicillin/clavulanate) is not contraindicated in pregnancy and is generally considered safe to use when clinically indicated. According to the most recent evidence from the European Respiratory Journal 1, amoxicillin and amoxicillin+clavulanic acid are classified as FDA pregnancy category B, indicating that animal studies have not shown risk to the fetus, and there are no adequate well-controlled studies in pregnant women demonstrating adverse effects.

The key points to consider when prescribing Augmentin during pregnancy include:

  • The potential benefit of the medication should justify the potential risk 1.
  • The typical adult dosing remains the same during pregnancy: 500/125 mg three times daily or 875/125 mg twice daily for most infections 1.
  • The amoxicillin component has been widely used in pregnancy for decades with a good safety profile 1.
  • The clavulanic acid helps overcome certain bacterial resistance mechanisms 1.
  • As with any medication during pregnancy, it should be used only when necessary for treating bacterial infections, as untreated infections may pose greater risks to both mother and fetus than the antibiotic itself 1.
  • Patients should complete the full prescribed course even if symptoms improve before completion 1.

It's also important to note that while Augmentin is generally considered safe, there are some potential risks to be aware of, such as the risk of necrotising enterocolitis in the fetus, particularly in women at risk of pre-term delivery 1. However, this risk is considered very low. Overall, the benefits of using Augmentin during pregnancy outweigh the potential risks when the medication is used as directed and under the guidance of a healthcare provider.

From the FDA Drug Label

8.1 Pregnancy Teratogenic Effects Pregnancy Category B Reproduction studies performed in pregnant rats and mice given amoxicillin and clavulanate potassium (2:1 ratio formulation of amoxicillin:clavulanate) at oral doses up to 1200 mg/kg/day revealed no evidence of harm to the fetus due to amoxicillin and clavulanate potassium There are, however, no adequate and well-controlled studies in pregnant women Because animal reproduction studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed.

Augmentin is not contraindicated in pregnancy, but it should be used only if clearly needed, as there are no adequate and well-controlled studies in pregnant women 2.

From the Research

Augmentin Use in Pregnancy

  • Augmentin, a combination of amoxicillin and clavulanate, is a type of antibiotic used to treat various bacterial infections.
  • According to the available evidence, penicillins, including amoxicillin, are considered a first-line antibiotic treatment during pregnancy, except in cases of maternal allergy to penicillin 3, 4, 5.
  • There is no specific contraindication for the use of Augmentin during pregnancy, as long as it is used properly and at the appropriate doses 3, 4.
  • However, it is essential to note that no medicine, including antibiotics, can be described as absolutely safe during pregnancy, and the treatment should be individualized based on the patient's condition and the severity of the infection 3, 4, 5.

Safety Considerations

  • The use of antibiotics during pregnancy should be carefully considered, taking into account the potential risks and benefits to both the mother and the fetus 3, 4, 5.
  • Physiologic changes during pregnancy may lead to pharmacokinetic alterations in antibiotics, requiring dose adjustment or careful monitoring and assessment 4.
  • It is crucial to weigh the potential risks of untreated infections against the potential risks of antibiotic treatment during pregnancy 3, 4, 5.

Comparison with Other Antibiotics

  • Other antibiotics, such as tetracyclines, fluoroquinolones, and gyrase inhibitors, are generally contraindicated during pregnancy due to potential harmful effects on the fetus 3, 4, 6.
  • In contrast, beta-lactams, including penicillins and cephalosporins, are considered safer options for use during pregnancy 3, 4, 5.

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

A Review of Antibiotic Use in Pregnancy.

Pharmacotherapy, 2015

Research

Antibiotics and pregnancy.

Die Pharmazie, 2005

Research

Drugs in pregnancy. Drugs to avoid.

Best practice & research. Clinical obstetrics & gynaecology, 2001

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.

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