Black Seed Oil Black Seed Oil with 3,000mg Thymoquinone {1-ounce} Black Seed (Nigella Sativa) is a traditional herb that has been used for centuries to promote health and general well-being.* Millions of people in Asia, the Middle East, Eastern Europe, and Africa have used Black Seed for thousands of years to support the body with a variety of concerns like respiratory health, stomach and intestinal complaints, circulatory and immune system support, and skin conditions. Black Seed may support metabolism and improve digestion, and published studies have shown that it may have a healthy effect on blood sugar levels.