Ahh - I don't actually consume that much of it. I saw the seeds and thought it would be funny if I could grow it. I've had a couple of cups of tea from it, but that's about it.
So, I have ephedra going to waste in my garden. Maybe I should be selling it on the black market...
Seriously - I had 2 cups of tea last fall. Gave me the shakes - the equivelent of 6 cups of coffee. Haven't had any since. It's pretty, though. Nice flowers. Curiously, the insects don't go near it.