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Supplement

Vitamine D3

Cholecalciferol

Vitamin D is produced in the skin under the influence of sunlight and is present in limited amounts in food. In autumn and winter, low levels are common; supplementation is widely recommended in the Netherlands.

Common uses

  • Supplementation in winter months
  • Support for bones, muscles, and resistance

Dosage & use

Often 10–25 mcg (400–1000 IU) per day; older adults and people with darker skin sometimes more. Follow the advice.

Cautions

Very high doses over a long period can be harmful. Consult in case of kidney or calcium metabolism problems.

Sources

  • Thuisarts.nl
  • Voedingscentrum
  • EFSA — beoordeelde gezondheidsclaims

Informational only, not medical advice and not a diagnosis. If you have symptoms or take medication, always consult a doctor or pharmacist.