Avoid flucloxacillin if you have a known allergy to penicillin antibiotics. This includes a history of anaphylaxis, severe skin reactions (like Stevens-Johnson syndrome or toxic epidermal necrolysis), or other significant allergic responses.
Use caution in patients with impaired renal or hepatic function. Dosage adjustments might be necessary; consult prescribing information for specific guidelines. Closely monitor these patients for signs of toxicity.
Gastrointestinal Issues
Flucloxacillin can cause gastrointestinal upset, including nausea, vomiting, and diarrhea. Inform patients about these potential side effects and advise them to report persistent or severe symptoms. Consider alternatives if gastrointestinal intolerance is severe.
Hepatotoxicity
While rare, flucloxacillin can cause liver damage. Regular monitoring of liver function tests, particularly in patients with pre-existing liver conditions or those receiving prolonged treatment, is recommended. Discontinue treatment if signs of hepatotoxicity appear.
Interactions
Flucloxacillin may interact with other medications. Concomitant use with methotrexate requires careful monitoring due to increased methotrexate toxicity risk. Inform your physician about all other medications, including over-the-counter drugs and herbal supplements, before starting flucloxacillin.
