A prescription or herb i can take to get rid of vaginal dryness?

Depends: Vaginal dryness is most often caused by lack of estrogen in menopause. If that is the case, the most effective treatment is some replacement estrogen, either vaginal or systemic. You get less systemic exposure to estrogen with a vaginal cream or tablet. Otherwise an alternative would be to use a lubricant before intercourse-many are now available better than KY or vaseline.