When it comes to medicinal herbs, wild oregano is king. Oregano has been used for its medicinal values for thousands of years. Zesty, peppery and lemony, wild oregano is rich in a long list of minerals that includes calcium, magnesium, zinc, iron, potassium, copper, boron, and manganese. Vitamins C and A (beta carotene) and niacin also are contained in oregano. Combining The King of Greek herbs with extra virgin olive oil and fresh lemon results in typical Greek cooking.