You can drink alcohol while taking flucloxacillin, but it is generally recommended to do so in moderation. Drinking alcohol may increase the risk of side effects from flucloxacillin such as nausea, vomiting, and diarrhea, which are common side effects of the antibiotic itself. Heavy drinking or binge drinking is advised against because it may worsen these side effects and can make it harder for the body to recover from an infection. It is also recommended to avoid alcohol for a few days after finishing the course of antibiotics to allow your body to fully recover. Overall, moderate alcohol consumption is considered safe with flucloxacillin, but avoiding alcohol completely might help the body recover more quickly and reduce the chance of side effects.