What is the best thing to get from a shop for a infected finger nail?

INFECTED FINGERNAIL. IF YOU HAVE AN INFECTED FINGERNAIL, YOU SHOULD SEE YOUR PCP OR A DERMATOLOGIST SOONEST! NO "SHOP" PRODUCTS WILL DO THE JOB. UNTIL YOU CAN SEE A REAL DOCTOR, SOAK THE FINGER IN FAIRLY HOT WATER FOR ABOUT 15-20 MINUTES EVERY 3 or 4 HOURS. BEST LUCK.