"i was given a short course of valium 4x 2mg a day for 5 days. i needed a slight relaxant, as i was going through opiate withdrawals through no fault of my own. it seemed to work pretty okay, but i think for panic attacks and anxiety i would say you need a minimum of 5mg, as i don&#039;t think 2mg was enough to take the edge off it. a great medicine though."