The Power of Coriander Seed Oil Coriander has a warm, sweet and spicy aroma. It is most well known for culinary but is effective for digestive issues, arthritis, fatigue & exhaustion, oily skin, stiffness and stomach cramps. This oil's warming effect is helpful for alleviating muscle aches and pain related to rheumatism, arthritis and muscle spasms and strains. Coriander oil has been shown to be very powerful against a broad range of harmful bacteria. Its use in foods and in clinical agents could prevent food-borne illnesses and even treat antibiotic-resistant infections, according to the authors of a study published in the Journal of Medical Microbiology.