Why take vitamin D3 at a dose of 2000 IU when there are 400 IU and 5000 IU options?

Vitamin D is available in a very wide range of doses, from 400 IU (formats for children and preventive regimens) to 5000 IU and above (therapeutic doses chosen on the basis of a blood test). The 2000 IU dose sits in the middle and is most often used as a maintenance course dose for adults in the autumn and winter period or with a lifestyle involving minimal time in the sun.

It is important to understand that vitamin D3 is a fat-soluble nutrient: it accumulates in the body, and any excess is eliminated much more slowly than an excess of water-soluble vitamins. That is why, when choosing a dose, you should go not only by general recommendations but also by your own diet, your region of residence and, ideally, your blood 25(OH)D level.

• 400-600 IU is a typical preventive dose, often found in children's forms and multivitamin complexes.
• 1000-2000 IU is a common range for adults for seasonal support without a prior test.
• 4000 IU and above is usually prescribed by a specialist when a deficiency has been confirmed.

If you already take other complexes containing vitamin D, your total daily dose may turn out higher than you expect. This product is intended for adults; consult a doctor before use, especially if you have chronic diseases. It should not be taken during pregnancy and breastfeeding.