Check the label on the medicine for exact dosing instructions. 1  Take Xifaxan by mouth with or without food. 2  Xifaxan works best if it is taken at the same time each day. 3  Continue to take Xifaxan even if you feel well.  If you miss a dose of Xifaxan, take it as soon as possible.
Shingles is contagious and can be spread from an affected person to babies, children, or adults who have not had chickenpox. But instead of developing shingles, these people develop chickenpox. Once they have had chickenpox, people cannot catch shingles (or contract the virus) from someone else.
Those most at risk for shingles are: 1  Anyone who has already had chickenpox - Shingles is basically a second outbreak of the chickenpox virus. Since it is caused by a preexisting virus in the body, shingles is not contagious and can not cause other forms of herpes. It could, however, cause chickenpox in someone who hasn't had chickenpox before.