Go with the flow! Curaleaf Liquid Concentrate 90% 20:1 Indica contains highly refined and concentrated pure cannabis oil in a glass dropper for convenient and easy dosing. Each dropper contains 450mg of active cannabinoids for vaporization. This concentrate contains more cannabinoids than other form. A 2 second inhalation delivers approximately 2.5mg of major cannabinoids. Inhalation is the fastest-acting method of administration with typical onset of effect within 90 seconds lasting for 2-3 hours.