Originally Posted by cardiodan
Im no guru, im just learning, but I do know a good bit. Here goes:
Ephedrine and caffeine act in a synergistic manner. They work together. The two we are most concerned with are the release of nor-epinephrine, and the stimulation of beta-2-androgenic receptors.
Clenbuterol is specifically a selective beta-2 sympathomimetic, primarily affecting only one of the three subsets of beta-receptors.
Because Clenbuterol has little beta-1 stimulating it reduces reversible airway with much less cardiovascular side effects compared to nonselective beta agonists. That is why you can take large doses of clen (200mcgs) and still have your heart rate at an acceptable pace for losing fat safely and effectively without overstressing IMO. Ephedra, on the other hand, you take a few extra pills and your heart rate will soon soar, unless youre nonresponsive due to tolerance and you pop them like theres no tomorrow.
Since it does not affect all beta receptors, it does not give you that extreme wired feeling a moderate/high dosage of eca would.
I, for example , made a mistake of dosing with my oral syringe 400mcgs of arr clen in one dose at once, thinking it was 40mcgs. I was in a rush, and had to do it quick, and did not make proper calculations. Needless to say, I was shaking a lot. My heart was at 150. But I felt fine! I slept fine. I was not wired. I shook, yes. alot. Its a big overdosage and this is an extreme case, but try taking 400mgs of ephedra or eca. I just hope you have a tolerance, as you will be on crack for sure.
Now, Im taking 140mcgs of clen, I upped it from 100 mcgs. I feel fine, and jitters are so second nature I just dont even know they are there. I cant use it to wake up any more, as it does not wire me at all, although it does give me a slight energy boost.
Nothing like caffeine or ephedra.
I hope this clears it up.
I lose more than 2lbs a week. Last week it was 4lbs