<s>[INST] My tongue is raw on the side and back. It has been bothering me for at least 2 months. I have been having a bad taste in my mouth. Sometimes feels like it is swolen. Dentist lasered it about a month or more ago, but it is just as bad or worse. He put me on acyclovir but told me to stop it after he put an oral medecine on there once. [/INST] Hi, Thank you for the query. Acyclovir is used to treat viral infections caused by herpes zoster (shingles). The soreness what you are feeling is because of the herpes infection. Viral infection reoccurrence rate is very much high. If you were asked to stop the acyclovir it might be because the infection is subsided and topical application of which medicine is not specified. Take vitamin supplements and Betadine gargle. I advise you to see your dentist and discuss the condition. Hope I have answered your query. </s>