What antibiotic is safe to take with Dilantin (phenytoin)?

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From the Research

Penicillins, cephalosporins, and macrolides are generally safe to take with Dilantin (phenytoin), but it's crucial to monitor for potential interactions and adjust the Dilantin dose as needed. When considering antibiotic therapy in patients taking Dilantin, it's essential to be aware of the potential for drug interactions that can affect the efficacy and safety of both the antibiotic and Dilantin.

Key Considerations

  • Certain antibiotics, such as trimethoprim-sulfamethoxazole, metronidazole, fluoroquinolones (ciprofloxacin), and certain antifungals (fluconazole), can increase Dilantin levels in the blood, potentially leading to toxicity 1.
  • Conversely, rifampin can decrease Dilantin levels, making seizure control more difficult 2.
  • The interactions between antibiotics and Dilantin occur because some antibiotics compete with Dilantin for liver enzyme metabolism or protein binding in the blood 3.

Safe Antibiotic Options

  • Penicillins (amoxicillin, ampicillin)
  • Cephalosporins (cefuroxime, ceftriaxone)
  • Macrolides (azithromycin)

Monitoring and Precautions

  • Monitor for signs of Dilantin toxicity, such as dizziness, slurred speech, unsteady gait, or confusion, when taking antibiotics with Dilantin 4.
  • Inform your healthcare provider about all medications you're taking, including Dilantin, before starting any antibiotic treatment, as they may need to adjust your Dilantin dose or monitor levels more closely during antibiotic therapy 5.

References

Research

Interactions between antiepileptic drugs, and between antiepileptic drugs and other drugs.

Epileptic disorders : international epilepsy journal with videotape, 2014

Research

Dilantin jeopardy: avoiding the dangers of phenytoin.

Medsurg nursing : official journal of the Academy of Medical-Surgical Nurses, 1998

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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