welcome to Healthcare Magic.
As you are having recurrent cold sore, then there is need to find cause of frequent recurrence. Cold sore outbreaks may be influenced by stress, sunlight, sunburn, fever, dehydration
, or local skin trauma
. You already have bipolar disorder
which increases stress in life. So, control your thyroid condition and bipolar disorder under control to prevent frequent recurrence of cold sores.
For medical treatment of cold sore, you can visit dermatologist
Wish you all the best.
Dr Ashish Kumar Mittal