Patients with herpes on the mouth, mostly caused by herpes simplex virus type 1 infection, can be triggered when the immune system is down, or sun exposure, etc., mainly in the mouth erythema, clusters of blisters, mostly in the mouth and lip area, can be topical antiviral drugs, but also oral antiviral drugs, as follows: 1, topical antiviral drugs: for herpes on the mouth, can be topical antiviral drugs The actual fact is that you can get a lot more than just a few of the most popular and popular drugs in the marketplace. Patients should usually pay attention to exercise to enhance their physical fitness and avoid recurrent herpes attacks.