okay, but do all NO products have caffine in it???
Hmmm. It occurs to me your question is quite similar to asking if all milks contain melamine, or all paints lead?
If you're refering to lesser quality paints, the type we've seen and heard so much about in the news recently, or adulterated milk products designed to trick you, ...then yes. This occurs because someone, ...either a manufacturer, or a consumer, has placed too much of an emphasis on quantity rather than quality. You can often pay a cheaper price, but if you're not receiving quality for the price you're paying, what value is it?
And if as in the case of melamine tainted milk, you experienced harmful effects to the body, it wasn't cheap was it?