Provided herein is a delivery device and vaporizable formulations that provide users or patients with the ability to safely, reliably, and conveniently obtain a high-quality, therapeutic vapor comprising an ayahuasca-like substance. The delivery device includes a chamber coupled to a power unit capable of providing power to vaporize the formulations for consumption of the substance in a consistently desirable and safe manner. Further included are kits and methods of treating psychological disorders using the delivery device and vaporizable formulations provided herein.