text: cold sore med.? i get a cold sore about every month and they heart bad and i need a med. that doesnt heart at all and gets read of the fast and it cant sting or tast bad  and it cant be over 10 $$$$ please i need your help you can apply vaseline in the daytime.  this will cool the pain and lessen the swoll and prevent scarring.  then apply toothpaste (the paste, not the gel) at night to dry it out. it will start to flake off (yea gross, i know) so that way they will shrink and eventually disappear.  it will go away if you do this for four nights to a week.  good luck!