Please Scroll Down to See Forums Below 
Ephedrine is a sympatheticomimetic, meaning it mimics a signal from the sympathetci nervous system -- this cause the release of norepinephrine, which is one of the primary endogenous thermogenic hormones. It is a beta agonist, like clenbuterol.
Caffeine blocks the adenosine receptor, which is a negative feedback mechanism for catecholamine induces thermogenesis.
At really high doses (deadly for a human), it would also phosphdiesterase inhibitor, this increases cyclic AMP levels.
Caffeine blocks the adenosine receptor, which is a negative feedback mechanism for catecholamine induces thermogenesis.
At really high doses (deadly for a human), it would also phosphdiesterase inhibitor, this increases cyclic AMP levels.
