Take US-36 west to Boulder. Continue straight on US-36 into Boulder as it becomes more of a city street than a highway. Then turn left on Canyon Dr (?). Stay on that and it'll take you into Nederland. As you're coming into Nederland, its going to be one of your first left turns (its the left turn right before the gas station and roundabout). Immediately after turning left, it will be the first building on your right. You won't know by looking at it, but Grateful Meds is located in the basement of that building.

Are you familiar with Google Earth/maps or mapquest or anything? You should easily be able to pull up exact directions from there. Just google Grateful Meds to get the address (its probably also on Page 1 of this thread).

Its not that hard to find I was just relying on my google maps on my cellphone which didn't work once I got close to Nederland.