Drug info - What kind of tobacco is used to make dokha? And why is it so strong?

[Sumeru]

I've heard that smoking dokha provides the user with a nicotine buzz stronger than any other -- at least when it comes to other methods of smoking tobacco. (Hookah, pipe, cigar, cigarette, cigarillo, etc.)
Other than Nicotiana rustica, used by Amazonian shamans and in the "thuoc lao" that the Vietnamese smoke, I can't imagine anything stronger than some of these "spicy" dokhas. So I guess my question is, what kind of tobacco on steroids are they putting in dokha? Is it normal N. tabacum? Is it N. alata? A certain variety of N. tabacum?

[Diabolicaldoll]

I've only tried it once and enjoyed it a lot.

It's an Arabic tobacco that's dried and then mixed with spices and herbs. It has a high nicotine content. The word Dokha translates to the word 'dizzy', named for it's 'head rush' you get, where I live if you smoke a cigarette if you've not smoked for a while we call it a 'niccy buz'" (nicotine buzz).