Hi, I found <a href="http://www.facmed.unam.mx/bmnd/plm/mex/productos/10502.htm">this</a> EC + paracetamol stack which is available over the counter in Mexico (link in Spanish). This is the only legal resource I could find for Epherine in Mexico.
What's with the paracetamol, I know they put asprin in for the stomach which you really don't want to take every day....but paracetamol ? Anyway, it's not exactly the best .. I would personally buy some ephedra and some caffiene tabs and just take those as your own stack, both are plentiful in mexico.
I agree, this is not a good stack (IMHO). The acetaminophen is useless and you don't get the proper Ephedrine to Caffene ratio.
Unlike the other dosages, the 20 mg/200 mg combination exceeded the predicted additive effect, so the researchers said that the 20/200 combination has a "supra-additive thermogenic synergism". In other words, the 20/200 dosage/ratio causes a synergistic effect where 1+1=3.