Flucloxacillin is mainly used to treat infections of the: Skin and soft tissues (boils, wounds, abscesses) Bones and joints Chest and lungs (such as some chest infections) Bloodstream (in serious infections) It works best against bacteria that are resistant to ordinary penicillin. How Does Flucloxacillin Work? Flucloxacillin kills bacteria by stopping them from building their protective cell walls. Without a strong cell wall, the bacteria die and the infection clears. How to Take Flucloxacillin Take flucloxacillin on an empty stomach (1 hour before or 2 hours after food) Take it exactly as prescribed by your doctor Complete the full course, even if you feel better Swallow capsules with water Possible Side Effects Most people tolerate flucloxacillin well, but some may experience: Nausea or vomiting Diarrhea Mild stomach pain Skin rash or itching Seek medical help immediately if you notice severe rash, difficulty breathing, or yellowing of the eyes or skin. Who Should Be Careful? Tell your doctor before using flucloxacillin if you: Are allergic to penicillin or antibiotics Have liver problems Are pregnant or breastfeeding Important Safety Tips Do not use flucloxacillin for viral infections like flu or colds Do not share antibiotics with others Store in a cool, dry place away from children Conclusion Flucloxacillin is an effective antibiotic for treating bacterial infections, especially skin and bone infections. When used correctly, it helps clear infections and prevents complications. Always follow your doctor’s instructions for safe and effective treatment.

Disclaimer & Credit: All medical articles including ours, are informative and provide population trends not specific to individuals which can be very different. Always seek personalized medical advice from your doctor for individual healthcare decisions.

Posted February 5, 2026