horrible. proceed with caution I've seen people on this drug
after they've had severe ADD and this makes them generally
normal. My friend recommended this to me because I have trouble
concentrating during study. BIG MISTAKE. first couple of days
were fine, third day, my I had tachycardia that lasted for about
2 hours, and then I had an on and off panic attack for the rest
of the night. Unfortunately that third day I had a test the next
day. I didn't successfully study anything, I was terrified and I
wanted to die, to leave college, to move home, to do anything to
make the terror stop. It just goes to show that not being able
to concentrate often does NOT mean you have ADD...and I should
not have taken the drug.