Calcium Carbonate
Caltrate is a brand-name calcium supplement containing calcium carbonate, designed to help prevent or treat low blood calcium levels in individuals who don't get enough calcium from their diet. It is commonly used to support bone health and may be recommended for conditions such as osteoporosis or for individuals at risk of calcium deficiency, including postmenopausal women and older adults.
Caltrate is a calcium supplement used to prevent and treat calcium deficiency and support bone health.
Key facts at a glance
- RxNorm
- 215850
- Generic
- Caltrate
- Class
- brand-name
- 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.
Caltrate is used to prevent and treat calcium deficiency (hypocalcemia) and to support bone health in conditions such as osteoporosis and osteopenia. It is often recommended for individuals with inadequate dietary calcium intake, postmenopausal women, and older adults at risk for bone loss.
Caltrate contains calcium carbonate, a calcium salt that helps replenish calcium levels in the body. Calcium is an essential mineral needed for bone formation, muscle function, nerve transmission, and various cellular processes.
Caltrate should be taken as directed, typically with food for better absorption. Some formulations include vitamin D, which enhances calcium absorption. Individuals with kidney disease, hypercalcemia, or certain digestive conditions should consult a healthcare provider before use. Calcium can interact with certain medications, including some antibiotics and thyroid medications, so spacing doses apart may be necessary.
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 September 3, 2026. · Read our editorial policy