Folic acid is necessary to keep nucleoprotein synthesis and erythropoiesis in the normal range
Slowly inject the vitamin B12 solution
Treating both the symptom and the source is how you get results that last, not just a temporary cosmetic fix
doi:10.1016/j.bmcl.2018.07.009
The exact dose and duration are tailored to the severity of the infection and whether the treatment is for an initial outbreak, recurrent episode, or suppressive therapy
The review synthesized findings from cell-culture experiments (human dermal fibroblasts, keratinocytes, irradiated fibroblasts), animal models (rats, mice, pigs, dogs), and human cosmetic-science studies of topical formulations