Jack Herer crossed with Space Queen to create this sativa-dominant hybrid (sativa/indica ratio of 70:30 or more). Those genes produce a heady, cerebral high with a strong mood boost and a powerful dose of energy. 
 
The sativa dominance makes Galactic Jack a great choice for alleviating low mood, anxiety, and stress, while the indica genes provide treatment for fatigue, chronic pain, and muscle stiffness. 
 
This is an incredibly potent choice for medication and recreation alike. Galactic Jack has a sweet, lemony flavor with hints of grapefruit and other citrus, and it smells of sweet lemons.