I copied my answer because I replied in the wrong place.
I guess it is on your lips. I used ointments and tabs, but I'm unsure if they will be available in your country. They contain a substance called Aciclovirum. If you haven't tried it, maybe check with your local drugstore. Zinc oxide ointment is great for drying out blisters. Also, supplement ......
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did miserably failed
