I am a life long sufferer.
I used to use the generic Zovirax cream but read on …..
I had 14 cold sores, on after the other, when I was stressed about 8 years ago! My daughter was getting married & there was lots to arrange plus my husband was very unwell. (Since passed away.)
GP prescribed systemic Aciclovar but I didn’t find it much help.
What helps me now, believe it or not, is a daily zinc tablet. Available from Holland & Barrett.
I haven’t had a cold sore for years because I believe the zinc supports my immune system.
Further evidence of this I believe, is that my Covid was a mild dose. It wasn’t pleasant but better than some folks who’ve really suffered. I swear by ZINC but you have to take it year round.
Sunlight (aka ultraviolet light) will also bring them on.
Eat well, (not rubbish processed food), get plenty of rest if you can & take zinc!
I hope you’ll feel better soon. The virus can be very debilitating.