It's a plant that is similar (in genetic structure) to the coffee plant. It's not an opiate, but it's an opioid agonist. If you have no opiate tolerance, it will feel similar to like you've taken painkillers (if you take around 5 grams). Don't take more than that, you'll puke.
Some lose all mind and become soul: insane. Some lose all soul and become mind: intellectual. Some lose both and become: accepted - Charles Bukowski
...too bad they didn't sell you an ounce of self respect. don't put that shit into your body, enjoy some herb if you want to be high. I cringe when I see electronic cigarettes. don't let chemical entrepreneurs mess with your brain or body chemistry.