North American Rosemary Oil 4.5oz Rosemary oil is a unique compound possessing several beneficial properties. Huang notes in Cancer Research that rosemary oil is a naturally occurring antioxidant exhibiting high antioxidant activity. Umek describes in Planta Medica that rosemary oil is strongly inhibitory against viruses. Engleberg et al. In the International Journal of Immunopharmacology denotes it's impressive powers in halting severe inflammation and edema. Navarro and colleagues found that rosemary oil if taken preventively, prevents toxic liver damage. Huhtanen determined the oil to possess significant antibacterial actions. Aqel, publishing in the Journal of Ethnopharmacology, discovered that rosemary oil is antispasmodic, meaning it inhibits constrictions and spasms of the internal muscles of the lungs, intestines, stomach, and uterus. Incredibly, Inatani found that rosemary oil was four times more powerful as an oxidant than BHT, the synthetic type used in commercial foods. Singletary, of the University of Illinois, discovered how rosemary oil increases the production of the liver's cancer fighting enzyme, glutathione-S-transferase. Amazingly, adding rosemary to the diet of rats increased liver glutathione levels by some 400%. That is a tremendous increase.