OG Shark, a rare strain found primarily in Canada, sets high standards with its impressive THC content and pungent, earthy aroma. Patients most commonly turn to this heavy-hitter for nausea, pain, and sleep disorders, as well as many other symptoms. It packs quite a punch from the get go. Leaving its users feeling uplifted and happy. Followed by a rushing feeling of relaxation that lasts for hours. Patients may find they become very sleepy after smoking.