Durban Poison is an all sativa marijuana strain—expect a clear-headed, focused high that’s perfect for accomplishing everything on your to-do list.

Often described as the “espresso of cannabis strains,” Durban Poison can help quell social anxieties or spice up the mundane task of cleaning your house. Named after the South African port city of Durban, this “pure” sativa strain was brought to the States in the 1970s by Ed Rosenthal.

Durban Poison is a landrace strain, meaning that in spite of its popular status in the U.S., it still carries the genetic qualities of cannabis plants indigenous to its homeland of Africa. While many marijuana strains available around the country today are hybrids (think Blue Dream), Durban Poison remains “pure” in its unadulterated sativa characteristics.

Landrace strains often have notable amounts of a cannabinoid called THCV, which likely contributes to the intense euphoric high that many users experience with Durban Poison. The purity of this sativa is evident in its lack of physical effects—this isn’t the strain to take if you want to hang out on the couch or catch up on sleep. Instead, it will focus your thoughts and is ideal for creative or social endeavors.

The often uplifting cerebral effects of Durban Poison may help those with ADD, and its energizing nature can give a boost to those with chronic fatigue syndrome. Consumers have also noted that it can relieve head pressure, making it a helpful tool for individuals suffering from pain related to migraines or sinus headaches.

Consumers report that the effects of this cannabis strain last for about two to three hours when smoked. They also caution that the mental intensity of Durban Poison may cause paranoia and an increased heartbeat in users who are prone to such symptoms.