I take 30mg on a regular basis and i honestly believe its made my heart beat faster, even when i dont take the drug. With that said i dont believe the myth of it being exactly like speed it true. I'm snorted 40mg of it and its gross. MY nose got like crusty with it and it burned. If youve done coke, coke is way smoother. Also i have not noticed any benificial effects from snorting other than it kicking in slightly faster. I'd say just take 60-70 mg of it normally and see how u like it.