Cold sores (fever sores or fever blisters) are caused by the herpes simplex virus and are very painful and troublesome. What can one do about it?
Are there any food for cold sore? Yes, not to eat, but to apply and very sweet. You can try applying honey to the cold sore. Apply the honey when you first feel the blister coming on, it will tingle a bit, but will stop the cold sore coming out. If it is already out, it will help heal faster.