Concentrated support for gastrointestinal, respiratory and urinary tract health with Oregano Oil. Chefs have long valued oregano as a culinary herb, but herbalists will tell you it is even more valuable for the many health-promoting qualities it possesses. This dietary supplement provides 10:1 extract and is from Swanson, a brand known for science-backed quality since 1969. It enhances immune function and provides antioxidant protection.