Ephedrine isn't banned, not even behind a prescription, there's just rather strict limits on how much you can buy a month. I take a Bronkaid every morning with my coffee.
Do I understand correctly that you're using it as an appetite suppressant? How effective has it been for you? Particularly considering that you're already drinking coffee and I would have expected caffeine to have the stronger effect there.
Also out of curiosity why not go with one of the new peptides?
Ephedrine is a far stronger appetite suppressant than caffeine. It only has a six-hour half life, though. The classic bodybuilder ECA stack was typically taken every four hours, but I suppose it's quite a bit harder to get to 4% bodyfat than it is just to not be overweight.
It varies quite wildly according to individual it would seem. Some people take it no issue. I generally avoid pseudoephedrine because it is a noticeable stimulant for me.