Oregano oil is known to be anti fungal, anti yeast and anti everything bad for you.  Think of it like a panacea, it can ward off just about anything in your body.  I often recommend 2 drops in warm water during cold months as an immune tonic.
 
Premier Oregano Oil features the essential oil of oregano derived from the leaves and flowers of the Oreganum vulgare, the true oregano species.  It can take up to 100lbs of oregano plants to make 1lb of the essential oil of wild oregano.  The oil of oregano is high in phenolic compounds such as carvacrol, making this concentrated natural oil very powerful. 
 
The Greeks and Romans had a profound appreciation for oregano and indigenous cultures have used it since ancient times.  In fact, its name, “Oregano”, comes from the Greek words "oros" and "ganos,” which are words for “mountain” and “joy” — oregano literally means "joy of the mountain."