Why is the vitamin D3 dissolved in olive oil here, and does it matter? — Vitamin D3 Food Supplement, N90- VitalHarmony

Vitamin D3 is one of the fat-soluble vitamins: fats are needed for it to be absorbed in the intestine. When the cholecalciferol is already dissolved in oil inside the capsule, this step is partly “done in advance” — the substance is in a form that is ready to be absorbed.

As a base, olive oil is neutral in taste, stable in storage and combines well with fat-soluble vitamins. This is standard practice for good-quality oil-filled vitamin D capsules.

The practical takeaway: the capsule is best taken with a meal that contains fat — for example, with a breakfast that includes eggs, nuts, avocado or any other source of fat. Taking it on an empty stomach or with completely fat-free food may reduce absorption. If you follow a very low-fat diet, bear this in mind when planning when to take it.