Calcium Citrate / Ergocalciferol / Magnesium Oxide
This multi-ingredient supplement combines calcium, vitamin D2 (ergocalciferol), and magnesium to support bone health and address nutritional deficiencies. It is commonly used to prevent or treat osteoporosis, hypocalcemia, and conditions associated with low levels of these essential nutrients. The combination allows for comprehensive bone mineralization support and overall mineral balance.
A bone-health supplement providing calcium, vitamin D2, and magnesium to support skeletal integrity and address nutritional deficiencies.
Key facts at a glance
- RxNorm
- 1014182
- Generic
- Calcium Citrate / Ergocalciferol / Magnesium Oxide
- Class
- multi-ingredient
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Prevention and treatment of osteoporosis, osteopenia, calcium/vitamin D/magnesium deficiencies, hypocalcemia, and support for bone health in postmenopausal women and older adults. May also be used in conditions requiring increased calcium intake such as pregnancy, lactation, or certain malabsorption syndromes.
Calcium citrate provides readily absorbable calcium for bone mineralization and neuromuscular function. Ergocalciferol (vitamin D2) promotes intestinal calcium absorption and supports bone remodeling. Magnesium oxide contributes to bone structure and helps regulate calcium and vitamin D metabolism. Together, they provide complementary support for skeletal health and mineral homeostasis.
Should be taken with food for optimal absorption. May interact with certain medications including bisphosphonates, tetracyclines, and fluoroquinolones. Patients with hypercalcemia, kidney stones, or sarcoidosis should avoid use. Calcium citrate may be taken without food, but full dose should not exceed 600mg elemental calcium at one time. Vitamin D toxicity can occur with excessive supplementation.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 28, 2026. · Read our editorial policy