vir , ▁each ▁of ▁which ▁is ▁available ▁in ▁table t ▁form . ▁ ▁Or al ▁ant iv iral ▁medic ation ▁is ▁often ▁used ▁as ▁a ▁pro phy la ctic ▁to ▁suppress ▁or ▁prevent ▁out break s ▁from ▁occurr ing . ▁The ▁recommended ▁dos age ▁for ▁supp ression ▁ther apy ▁for ▁rec urrent ▁out break s ▁is ▁ 1 , 0 0 0   m g ▁of ▁val acy clo vir ▁once ▁a ▁day ▁or ▁ 4 0 0   m g ▁A cyc lo vir ▁taken ▁twice ▁a ▁day . ▁In ▁addition ▁to ▁prevent ing ▁out break s , ▁these ▁medic ations ▁greatly ▁reduce ▁the ▁chance ▁of ▁inf ect ing ▁someone ▁while ▁the ▁patient ▁is ▁not ▁having ▁an ▁out break . ▁ ▁O ften , ▁people ▁have ▁regular ▁out break s ▁of ▁anywhere ▁from ▁ 1 ▁to ▁ 1 0 ▁times ▁per ▁year , ▁but ▁stress ▁( because ▁the ▁virus ▁lies ▁next ▁to ▁the ▁n erve ▁cells ), ▁or ▁a ▁weak ened ▁imm une ▁system ▁due ▁to ▁a ▁temporary ▁or ▁permanent ▁ill ness ▁can ▁also ▁spark ▁out break s . ▁Some ▁people ▁become ▁inf ected ▁but ▁fail ▁to ▁ever ▁have ▁a ▁single ▁out break , ▁although ▁they ▁remain ▁carri ers ▁of ▁the ▁virus ▁and ▁can ▁pass ▁the ▁disease ▁on ▁to ▁an ▁un in fect ed ▁person ▁through ▁asympt om atic ▁shed ding ▁( when ▁the ▁virus ▁is ▁active ▁on ▁the ▁skin ▁but ▁r ash es ▁or ▁bl ister s ▁do ▁not ▁appear ). ▁ ▁The ▁use ▁of ▁ant iv iral ▁medic ations ▁has