Chemex is a sativa weed strain made from a genetic cross between 91 Chemdog, GSC, and Tropicana Cookies #1. This strain is 60% sativa and 40% indica. Chemex, also known as Chemex Sativa, effects include feeling energetic, creative, and happy. Medical marijuana patients often choose Chemex when dealing with symptoms associated with fatigue, depression, and pain. The dominant terpene of this strain is myrcene. If you’re looking for a potent and uplifting sativa that can help you feel energetic and creative, Chemex might be the strain for you.