If the blisters are caused by vitamin deficiency, vitamin supplements should be taken under the advice of a doctor, but blisters on the lips are mostly caused by a rapid multiplication of the herpes simplex virus due to a lowered immune system.
Vitamins are indispensable nutrients to maintain the function of the body’s immune system and consuming the right amount of vitamins can help with the disease, which can be supplemented by taking vitamin-rich fruits and vegetables; blind use of dietary supplements is not recommended.