Dear Andy741,
As far as I know, none of the ingredients actually clash with EC.
A quick comment on each then:
Theobromine - this sounds like a methylxanthine. Cocoa caffeine, if I remember right.
Caffeine - good old caffeine.
The theorobromine and caffeine will do the same thing - prevent breakdown of cathecholamines in your body. This doesn't clash with EC.
tetrahydroxy flavones, pentahydroxyflavones - bioflavanoids. These could be estrogenic and/or anti-oxidant in nature. Again, these shouldn't clash with EC.
synephrine - this stuff's from mandarin orange peel. Supposedly an alpha-2 agonist. There is some truth in this since mandarin orange peel is used in TCM preparations as an expectorant/bronchodilator sort of thing. Again, I can't see how this clashes with EC. In fact, it should speed things up.
and polyphenols - possible estrogen/antioxidant effects, no clash with EC.
It doesn't say how much of each ingredient - you've probably been ripped off then.
How long have you been taking EC? I can only guess that you've taken it past the 3-4 weeks duration and it is at this juncture that the jitters wear off with its thermogenic effect rocketing on.
Godspeed, and happy HSTing
