Eel River Organics The Doctor Cartridge is an Indica-dominant powerhouse clocking in at 76.8% THC. Take a pull of this giggle-inducing cartridge and enjoy the pungent citrus flavor profile before The Doctor puts you to sleep. Eel River Organics starts with small batch, single-strain, organic flower, which is put through a CO2 extraction process to produce its solvent-free clear distillate.