Greater Cure potions will cure it, you'll just have to chug a couple every time. Alchemy gives a 10% bonus for every 33.3, so 30 will give you no bonus. If you can squeeze 3.3 points from another skill, you would get a little bump. You could also squeeze in 20+ EP on jewelry and be decent there as well. I roll most PvPers with minimum of 30EP if possible.