Why does it contain black cumin oil if it is just vitamin D3?

Vitamin D3 is a fat-soluble substance. This means the body needs fats to absorb it: without them, a significant part of the vitamin is simply not absorbed in the intestine. The black cumin oil in these drops serves as exactly this kind of fatty base, which helps cholecalciferol to be absorbed more effectively.

Apart from this function, black cumin oil has long been used in the diet and traditional practices of the peoples of the East and the Mediterranean — it is well known as a food. In this product it also helps keep the liquid formula stable, together with tocopherols, which act as antioxidant components.

The practical conclusion: you do not have to take these drops with food that contains fat — the fatty base is already built into the formula. Nevertheless, taking them with a meal or straight after it remains a sensible habit for most fat-soluble supplements.