[transgender newbie]

i am thinking about buying this:

http://www.greenbush.net/newliqex.html + http://www.greenbush.net/soyisoflavones.html

or this :

http://www.greenbush.net/enblenex.html + http://www.greenbush.net/soyisoflavones.html

how many drops i should take?

i know that i cannot drink caffine. i am wondering why i cannot drink cabronate soda/water?