Not at all, but eating less and taking more exercise has been shown to be useful!

do you mean green tea if you do yes. never heard of green coffee

I assume you meant green tea tablets, and they most certainly do (if you look at any weight loss vitamin regime, green tea is usually amongst the primary ingredients). It has tons of health benifits other than weight loss and I suggest taking two caplets daily. Green tea helps flush out liquids, so if your weight is mostly liquids it should definately help.

You must mean green TEA. I heard it works, but not for me.

never heard of green coffee, but green tea is supposed to help.

Green Coffee no but Green Tea Yes