Oxygen, and sulfur, and vitamin c. The TCH allows the oxygen in. Don't be a dumb-ass. The Rick Simpson Story: Healing Cancer with Cannabis (more at cureyourowncancer.org) https://www.youtube.com/watch?v=zD2U4eDBu8A Amazing: Hemp oil cured man's stage 4 pancreatic cancer https://www.youtube.com/watch?v=vZN1-_lBaxo Cannabis THC Cures Cancer, Not CBD - Rick Simpson Oil Interview https://www.youtube.com/watch?v=lub4k4Vk5YQ Rick Simpson - Hemp Oil Cures Cancer (full speech Vancouver 2013) https://www.youtube.com/watch?v=iZfjFBVJbHI Rick Simpson Miracle Hemp Oil Cures Cancer! https://www.youtube.com/watch?v=M3DQZ81JgyA