Dimethyl sulfoxide is a natural product from trees that relieves muscle and joint pain, treats bladder inflammation and protects healthy cells from cancer and chemotherapy drugs. 

Dimethyl sulfoxide (DMSO) is an organosulfur compound with the formula (CH3)2SO. It can uniquely provide solubility to certain very polar small molecules, such as simple biomolecules with multiple protic functional groups.

DMSO is widely used as a topical analgesic and anti-inflammatory, and is a known antioxidant. It can quickly penetrate the skin and other membranes without damaging them.