Joints and bones
Calcium with vitamin D
Also called: calcium D3, shelcal, calcium plus D
A combination for bones.
- Why people take it
- Osteoporosis prevention.
- What the evidence says
- Helps bones in people low in calcium or vitamin D.
- How it is usually taken
- Usually 500 to 1,000 mg calcium with 400 to 1,000 IU vitamin D a day, split with meals; count dietary calcium.
- Be careful
- Too much calcium can cause kidney stones; get as much as you can from food.
- Medicines it can interact with
- Reduces absorption of levothyroxine, iron, bisphosphonates and some antibiotics; separate doses. Thiazides raise calcium.
Other joints and bones
Common questions
What is Calcium with vitamin D?
A combination for bones.
Why do people take Calcium with vitamin D?
Osteoporosis prevention.
Does Calcium with vitamin D work?
Helps bones in people low in calcium or vitamin D.
How much Calcium with vitamin D do people take?
Usually 500 to 1,000 mg calcium with 400 to 1,000 IU vitamin D a day, split with meals; count dietary calcium.
Is Calcium with vitamin D safe?
Too much calcium can cause kidney stones; get as much as you can from food.
Does Calcium with vitamin D interact with medicines?
Reduces absorption of levothyroxine, iron, bisphosphonates and some antibiotics; separate doses. Thiazides raise calcium.
Sources and further reading
Last reviewed 31 October 2026. Written by Satya Babu.
🔎 Search all supplements