GNC SUPERFOODS BLACK SEED OIL is a natural source of omega fatty acids. The black seed oil capsules contain black cumin seed oil which is a source oflinoleic acid (omega-6) and oleic acid (omega-9). Linoleic acid is an essential fatty acid that plays an important role in maintaining the integrity and structure of body tissues. Essential fatty acids cannot be manufactured by the body in sufficient / adequate amounts and must be consumed via the diet. Omega 9 fatty acids are found in abundance in popular Mediterranean style diets.