DMSO exhibited zero-order degradation kinetics when sufficient ozone was supplied. It is an effective pain killer, blocking nerve conduction fibers that produce pain. 

DMSO Gel assists temporarily reduce pain of large joints such as post traumatic soft tissue injuries, acute bursitis, strains and sprains. https://dmso.com.au/

DMSO has the unusual ability to depress the freezing point of water dramatically, while maintaining viability with many cell and tissue types. It is a sulfur-containing organic compound that is derived from MSM, and can be used internally or externally.