Just keep in mind that theine and caffeine are exactly the same molecule, even though caffeine is the more common term. So, next time you hear the word theine you will know that it is the same chemical compound as caffeine.

Is theine same as caffeine?

You understood correctly: it is actually coffee that contains theine! The reason is easily explained: theine and caffeine are actually the same substance with the same chemical composition.

Is theine free same as caffeine free?

SAME SAME BUT DIFFERENT? Caffeine and theine are chemically identical, the only thing that sets them apart is the concentration.