What is the antibiotic most often used for treatment of paronychia?

Often antibiotic. Is prescribed b u t the paronychia may need to be unroofed, soaks often help in hydrogen peroxide, topical medications, topical antibiotics like muciprocin or some old fashioned cure like gentian violet too. Much depends if it is acute bacterial or a chronic situation which may be fungal or yeast or due to skin changes at the nail skin interface. You want to see someone if it doesnt work.