Can i use flucloxacillin capsules to help my cough?

No,: unless they were given specifically for this purpose. A major challenge in healthcare is the appropriate use of antibiotics. Bacteria develop resistance to antibiotics when the host (infected person) uses the antibiotics inappropriately. Another problem is that drug interactions are difficult to predict, so prescriptions should be taken only after your full medication list is reviewed.

Definitely not: Flucloxacillin is an antibiotic, which can only help a bacterial infection. Most coughs are not due to bacteria; even when they are, it would take several days to help the cough. Nobody should ever take any antibiotic without a doctor's evaluation and prescription. Contact your GP about further evaluation of your cough and perhaps a propoer cough suppressant. Good luck!