“Synthetic marijuana” is a broad term that’s used by much of the media to describe plant material sprayed with any number of lab-derived chemicals. These chemicals may be intended to mimic the effect of plant-based cannabinoids on the brain; they also may not be.
The similarities end there. The products, commonly sold under brand names like K2 or Spice (or “potpourri”) at head shops, gas stations and bodegas, is known to cause serious health complications, including death.
Plant-based cannabis, which has known health benefits, has never resulted in a known fatal overdose. Natural marijuana is legal for medical or recreational use in more than half of the United States. Synthetic cannabinoid products are universally banned.
Marijuana use is easily captured by urine and blood tests. Synthetic marijuana is not detected by these tests, making it popular among prisoners, members of the military and other people for whom