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Ergocalciferol Dosage

Medically reviewed by Drugs.com. Last updated on March 11, 2021.

Applies to the following strengths: 8000 intl units/mL; 50,000 intl units; 500000 intl units/mL; 25000 intl units; 2000 intl units; 400 intl units

Usual Adult Dose for Hypoparathyroidism

50,000 to 200,000 international units (1250 to 5000 mcg) orally daily, concomitantly with calcium lactate 4 g, six times per day

Comments:
-The range between therapeutic and toxic doses is narrow.
-Dosage must be individualized under close medical supervision.
-Calcium intake should be adequate.
-Monitor blood calcium and phosphorus every 2 weeks, or more frequently if necessary.

Usual Adult Dose for Rickets

12,000 to 500,000 international units (300 to 12,500 mcg) orally daily

Comments:
-The range between therapeutic and toxic doses is narrow.
-Dosage must be individualized under close medical supervision.
-Calcium intake should be adequate.
-Monitor blood calcium and phosphorus every 2 weeks, or more frequently if necessary.
-X-ray bones monthly until condition is corrected and stabilized.

Usual Adult Dose for Familial Hypophosphatemia

12,000 to 500,000 international units (300 to 12,500 mcg) orally daily

Comments:
-The range between therapeutic and toxic doses is narrow.
-Dosage must be individualized under close medical supervision.
-Calcium intake should be adequate.
-Monitor blood calcium and phosphorus every 2 weeks, or more frequently if necessary.
-X-ray bones monthly until condition is corrected and stabilized.

Usual Adult Dose for Vitamin/Mineral Supplementation

Recommended Daily Allowance: 15 mcg (600 international units) daily
Tolerable Upper Intake Level: 100 mcg (4000 international units) daily

Usual Geriatric Dose for Vitamin/Mineral Supplementation

Recommended Daily Allowance:
Up to 70 years: 15 mcg (600 international units) orally daily
Over 70 years: 20 mcg (800 international units) orally daily

Tolerable Upper Intake Level: 100 mcg (4000 international units) daily

Usual Pediatric Dose for Rickets

12,000 to 500,000 international units (300 to 12,500 mcg) orally daily

Comments:
-Pediatric doses must be individualized.
-The range between therapeutic and toxic doses is narrow.
-Dosage must be individualized under close medical supervision.
-Calcium intake should be adequate.
-Monitor blood calcium and phosphorus every 2 weeks, or more frequently if necessary.
-X-ray bones monthly until condition is corrected and stabilized.

Usual Pediatric Dose for Familial Hypophosphatemia

12,000 to 500,000 international units (300 to 12,500 mcg) orally daily

Comments:
-Pediatric doses must be individualized.
-The range between therapeutic and toxic doses is narrow.
-Dosage must be individualized under close medical supervision.
-Calcium intake should be adequate.
-Monitor blood calcium and phosphorus every 2 weeks, or more frequently if necessary.
-X-ray bones monthly until condition is corrected and stabilized.

Usual Pediatric Dose for Hypoparathyroidism

50,000 to 200,000 international units (1250 to 5000 mcg) orally daily, concomitantly with calcium lactate 4 g, six times per day

Comments:
-Pediatric doses must be individualized.
-The range between therapeutic and toxic doses is narrow.
-Dosage must be individualized under close medical supervision.
-Calcium intake should be adequate.
-Monitor blood calcium and phosphorus every 2 weeks, or more frequently if necessary.

Usual Pediatric Dose for Vitamin/Mineral Supplementation

Recommended Daily Allowance:
0 to 12 months: 10 mcg (400 international units) orally daily
1 year and older: 15 mcg (600 international units) orally daily

Tolerable Upper Intake Level:
-0 to 6 months: 25 mcg (1000 international units) daily
-7 to 12 months: 38 mcg (1500 international units) daily
-1 to 3 years: 63 mcg (2500 international units) daily
-4 to 8 years: 75 mcg (3000 international units) daily
-9 years and older: 100 mcg (4000 international units) daily

Renal Dose Adjustments

Data not available

Liver Dose Adjustments

Data not available

Dose Adjustments

Pregnancy/Lactation:
-The US Recommended Daily Allowance for pregnancy or lactation is 15 mcg (600 international units) per day.
-The Tolerable Upper Intake Level for pregnancy or lactation is 100 mcg (4000 international units) per day.

Dialysis

Data not available

Other Comments

Storage requirements:
-Store at controlled room temperature

General:
-The range between therapeutic and toxic doses is narrow.
-The effects of vitamin D can persist for 2 or more months after cessation of treatment.

Monitoring:
-Monitor blood calcium and phosphorus every 2 weeks, or more frequently if necessary.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.