Oregano is a flowering plant in the mint family. It is native to temperate Western and Southwestern Eurasia and the Mediterranean region. Oregano is a perennial herb, growing from 20–80 cm tall, with opposite leaves 1–4 cm long. The flowers are purple, 3–4 mm long, produced in erect spikes. WikipediaPeople around the Mediterranean region have used oregano for centuries in herbal medicine to treat many ailments, including:skins sores.aching muscles.asthma.cramping.diarrhea.indigestion.colds.to boost overall health.6 Science-Based Health Benefits of OreganoRich in Antioxidants. Share on Pinterest. ...May Help Fight Bacteria. Oregano contains certain compounds that have potent antibacterial properties. ...Could Have Anti-Cancer Properties. Oregano is high in antioxidants. ...May Help Reduce Viral Infection. ...Could Decrease Inflammation. ...Easy to Add to Your Diet.