how do i find out about splenda sweetener and the side afects it may have?

Answer 1

You have two options as I see it:

1. Eat copious amounts of the product and document your progress/regress i.e. make a journal of when your third appendage appears, an eye falls out, you became incontinent, you think you might have alzheimers but cannot quite remember where your journal is.... blah blah blah

or

2. Read! There is so much information available on this, it is difficult to miss. Why not try these to begin with:
http://www.mercola.com/2004/mar/31/splenda_reaction.htm
http://www.mercola.com/2000/dec/3/sucralose_dangers.htm
http://www.splendatruth.com/
http://www.holisticmed.com/splenda/

Answer 2

Look up the different ingredients in it. For example, if it contains Aspartame this will give quite a few side affects.