340IU to 400IU a day – from birth to 1 year.To help your child grow healthy bones and prevent rickets, you can give them: If changes to their diet still do not provide enough vitamin D then the doctor may prescribe a maintenance dose of 400IU to 600IU for them to take daily long term. Your child's doctor may recommend changes to your child's diet to improve their vitamin D levels. age 12 to 17 years – 10,000IU daily for 8 to 12 weeks.age 6 months to 11 years – 6,000IU daily for 8 to 12 weeks.age 1 to 5 months – 3,000IU daily for 8 to 12 weeks.Your child's dose will depend on their age and how severe their vitamin D deficiency is. You can take 400IU a day if you're an adult maintaining your vitamin D levels. Lower colecalciferol dosesĬolecalciferol is also available in lower doses. If you've had a loading dose but need to maintain your vitamin D levels, your doctor may prescribe a maintenance dose of 800IU to 2,000IU a day. If you have severe vitamin D deficiency, your doctor may prescribe a loading dose of up to 300,000IU. 1 microgram (1mcg) of vitamin D is the same as 40IU. Dosage and strengthĬolecalciferol doses are measured in international units (IU). Lower doses of colecalciferol are usually taken to maintain your vitamin D levels or prevent you from getting vitamin D deficiency. It is prescribed to raise low levels of vitamin D quickly.

Colecalciferol comes in different strengths.Ī loading dose is a high strength course of vitamin D treatment that is usually taken for a short time (usually, a few weeks).

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