Nicotiana rustica AZTEC TOBACCO (plant)

Nicotiana rustica, known in South America as Mapacho and in Vietnam as Thuoc Lao, is a plant in the Solanaceae family. 
Tobacco Mapacho grow in the rainforest it contains up to nine times more nicotine than common North American varieties such as N. tabacum. 
It is a very potent variety of tobacco.

nicotiana rustica is used for entheogenic purposes by South American shamans. 
it is also smoked in cigars and used as an enema and as an anthelmintic effective against tapeworm infections.

In Vietnam, Tobacco Mapacho is most commonly smoked after a meal on a full stomach to aid in digestion, or along with green tea or local beer.