Disclosed herein is a pharmaceutical composition consisting essentially of (i) 200 milligrams to 4 grams of acyclovir, or 50 milligrams to 4 grams of valacyclovir, (ii) 50 milligrams to 200 milligrams of a tetracycline and (iii) 100 milligrams to 1,000 milligrams of metronidazole, in combination with one or more pharmaceutically acceptable carries.