The card names no season, lifestyle or groups for whom additional vitamin D3 is especially relevant. According to the manufacturer's description, vitamin D3 is linked to the health of bones and teeth and the normal function of the immune system; the card gives one regimen – 1 drop a day for children from the 2nd week of life and adults. Consulting a doctor is recommended before use.
General information (not a manufacturer's instruction): the need for vitamin D varies from person to person and an excess is harmful – it is better to discuss intake and dose with a doctor.