health

The NIH recommends the following measures to lower the risk of
spreading HSV-1 to other parts of the body or to other people, and to
lower the frequency of recurrences.

• Avoid kissing or close contact with others while the blisters are
  present.
  
• Avoid sharing items that touch the mouth. These include towels,
  washcloths, lipsticks, lip balms, razors, and toothbrushes as well
  as drinking glasses and food utensils.
  
• Keep the hands clean. Wash them frequently and avoid touching
  the eyes or genital area during an outbreak.
  
• Try to avoid such common triggers as colds or flu, high stress
  levels, or being short on sleep.
  
• Use sunblock on the lips and face when outdoors for long periods
  of time.
• Some people with frequent recurrences of cold sores benefit from
  an over-the counter dietary supplement called lysine, which is an
  amino acid (one of the chemical building blocks of proteins).
  Patients should check with their doctor to see whether lysine
  might be helpful for them.