This stuff is excellent for fat burning, at the end of my last course I took 5 tablets (0.02mg) each day for 28 days and dropped a s**t load of fat, the results where absolutely amazing!... I could sleep on the stuff and still had an appetite.
As for the shakes I simply got used to them, they went away... However it was quite funny when other people, especially at work noticed them and point them out to me....
It's also a bronchilator (can't spell) and I'm sure it has helped my breathing a lot, especially as I do a lot of swimming and can now do full lengths underwater, where as before I could only manage 1/2 to 3/4 of a length (25m pool)
I'd recommend it!
Cinders.