Overview
- Adults and children from age one are advised to take 10 micrograms of vitamin D daily, while infants up to 12 months should receive 8.5 to 10 micrograms.
- The NHS cautions against exceeding 100 micrograms (4,000 IU) daily for adults and ages 11–17, 50 micrograms for ages 1–10, and 25 micrograms for infants.
- One microgram equals 40 IU, so the daily recommendation corresponds to 400 IU on supplement labels.
- People with medical conditions or uncertainties should consult a doctor and follow any clinician-recommended dose instead of the general advice.
- Vitamin D can also be obtained from oily fish, red meat, egg yolks, and fortified foods, with liver advised against during pregnancy.