Dude, I tend to agree with Big_A, but I know that is not the answer you want. We all are looking for info in here. I have used them with great success for contest prep. I used 1 a day for about 4-6 weeks. There can be many sides, too many to list, hence the strong warning. Many, many schools of thought here, OK! You CAN'T STOP TAKEN THIS STUFF COLD TURKEY!!!!! I did back in 1988, cause I didn't know WTF I was doing. I blew up like a pig, gained 30 pounds in 10 days!!!! NO BS!!!! So you need to wean yourself off them. There are numerous articles and how too's out there, so just do your home work. But for me, They kick ass for fat loss!!! Hope I was of help. A