Vitamin D for children: sources, nutrition and safety

Vitamin D helps regulate calcium and phosphate, which are needed for healthy bones, teeth and muscles. Severe deficiency can cause rickets in children.

Most vitamin D is made in the skin from sunlight. Few foods contain much of it.

• Oily fish such as salmon and sardines
• Egg yolks
• Fortified foods, such as some cereals, spreads and milks

Many countries, including the UK, advise a daily vitamin D supplement for children at certain ages or times of year. Check your national guidance or ask your health visitor or doctor.

Lower vitamin D levels have been reported in some groups of autistic and ADHD children. Trials of supplements for symptoms are limited and inconsistent.

Very high doses over time can raise calcium levels and be harmful. Do not exceed the amount on the label unless a clinician advises it.

Supplements can interact with medicines and with each other, and children need smaller amounts than adults. NeuroBite never gives individual doses. Ask your child's doctor, pharmacist or dietitian before starting, stopping or combining supplements.