Northern Lights is inarguably one of the most popular strains of all time. An inbred descendant of original Afghani landrace strains, Northern Lights is a pure indica. THC levels can reach 16-21%, making this one of the most potent strains available on any market. This strain has a sweet, earthy flavor with hints of citrus. A couple hits is all it takes for most patient's seeking this strain's powerful body effects, an upbeat mix of euphoria and physical relaxation. CBD levels are less clear, but they certainly aren't high enough to recommend this as a treatment for seizures or other conditions that respond to CBD. Even so, Northern Lights is a highly useful medical strain, effective at treating anxiety, pain, and insomnia, as well as lack of appetite.