Calcium / Vitamin D Dosage
Medically reviewed by Drugs.com. Last updated on Jun 17, 2025.
Applies to the following strengths: 600 mg-10 mcg; 600 mg-20 mcg; 250 mg-10 mcg; 600 mg-5 mcg; 232 mg-200 intl units; 117 mg-3.325 mcg; 250 mg-3.125 mcg; 500 mg-3.125 mcg; 500 mg-5 mcg; 315 mg-6.25 mcg; (as carbonate and lactate) 200 mg-6.25 mcg; 200 mg-6.25 mcg; 250 mg-5 mcg; 600 mg-3.125 mcg; 500 mg-2.5 mcg; 500 mg-15 mcg; 500 mg-10 mcg; 315 mg-5 mcg; 600 mg-12.5 mcg; 250 mg-6.25 mcg; 250 mg-12.5 mcg; 600 mg-62.5 mcg; 105 mg-3 mcg; 100 mg-3 mcg; 1000 mg-10 mcg/30 mL; 500 mg-12.5 mcg/5 g
Usual Adult Dose for:
Additional dosage information:
Usual Adult Dose for Osteoporosis
Calcium - General Range: 1000 mg to 1300 mg daily
Vitamin D - General Range: 200 international units to 800 international units daily
Note: While much larger vitamin D dosages have been recommended as a single agent, many calcium-vitamin D combination supplements will contain approximately 200 international units to 400 international units of vitamin D per dose.
Usual Adult Dose for Dietary Supplement
Calcium - General Range: 1000 mg to 1300 mg daily
Vitamin D - General Range: 200 international units to 800 international units daily
Note: While much larger vitamin D dosages have been recommended as a single agent, many calcium-vitamin D combination supplements will contain approximately 200 international units to 400 international units of vitamin D per dose.
Renal Dose Adjustments
Data not available
Liver Dose Adjustments
Data not available
Precautions
Caution is recommended when used in patients with severe renal impairment.
Dialysis
Data not available
Other Comments
Should be taken with food to minimize gastrointestinal upset.
Taking up to 500 mg of calcium with food improves absorption.
More about calcium / vitamin d
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Patient resources
Other brands
Calcitrate with D, Os-Cal 500 Chewable, Os-Cal Calcium+D3
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Further information
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