Ostocalcium Plus
Ostocalcium Plus is a chewable tablet made by GSK that contains Calcium phosphate 500 mg calcium + Vitamin D3 300 IU. It combines Calcium phosphate: calcium supplement and Vitamin D3: vitamin.
| Ingredient (salt) | Amount |
|---|---|
| Calcium phosphate | 500 mg calcium |
| Vitamin D3 (cholecalciferol) | 300 IU |
Calcium phosphate
What it is used for
Provides calcium for bones and teeth.
How it works
A calcium supplement that also supplies phosphate, often used in syrups and children's products.
How to take it
Take as directed, usually with food.
Common side effects
- Constipation
- Stomach upset
Get medical help straight away if
Confusion, thirst or vomiting (too much calcium)
Be careful
Keep 2 to 4 hours apart from thyroid tablets and iron.
Other medicines and interactions
Same separation rules as other calcium: iron, levothyroxine, quinolones, tetracyclines.
Pregnancy and breastfeeding
Commonly used in pregnancy when prescribed.
Vitamin D3 (cholecalciferol)
What it is used for
Helps the body absorb calcium and keeps bones and muscles healthy; treats vitamin D deficiency.
How it works
Cholecalciferol, the form of vitamin D made in skin from sunlight. It helps absorb calcium for bones and muscles. Deficiency is very common in India despite the sun.
How to take it
Daily doses (600 to 2,000 IU) or weekly 60,000 IU for a few weeks to correct deficiency, then monthly as advised; take with the fattiest meal. Do not continue 60,000 IU weekly for long without a blood test.
Common side effects
Usually none at normal doses
Get medical help straight away if
Thirst, passing lots of urine, nausea, confusion or kidney stones (too much vitamin D raises calcium)
Be careful
High weekly doses are for deficiency only; too much over time can be harmful.
Other medicines and interactions
Thiazide diuretics with high doses raise calcium. Orlistat, liquid paraffin and some anti-epileptics reduce vitamin D.
Pregnancy and breastfeeding
Recommended in pregnancy and breastfeeding at normal doses; high-dose regimens only on medical advice.
Most vitamin and herbal supplements in India are regulated as foods (FSSAI) and are not tested the way medicines are. More is not always better: check the dose on the pack, and tell your doctor about supplements you take.
Common questions
What is Ostocalcium Plus?
Ostocalcium Plus is a chewable tablet by GSK containing Calcium phosphate 500 mg calcium + Vitamin D3 300 IU.
What is Ostocalcium Plus used for?
Provides calcium for bones and teeth. Helps the body absorb calcium and keeps bones and muscles healthy; treats vitamin D deficiency.
How should I take Ostocalcium Plus?
Take as directed, usually with food. Daily doses (600 to 2,000 IU) or weekly 60,000 IU for a few weeks to correct deficiency, then monthly as advised; take with the fattiest meal. Do not continue 60,000 IU weekly for long without a blood test. Always follow the dose your doctor or the pack gives.
What are the side effects of Ostocalcium Plus?
Common side effects include: Constipation, stomach upset, Usually none at normal doses. Get medical help straight away for: Confusion, thirst or vomiting (too much calcium), Thirst, passing lots of urine, nausea, confusion or kidney stones (too much vitamin D raises calcium).
Does Ostocalcium Plus need a prescription?
It is sold as a supplement and does not need a prescription.
Can I take Ostocalcium Plus in pregnancy or while breastfeeding?
Commonly used in pregnancy when prescribed. Recommended in pregnancy and breastfeeding at normal doses; high-dose regimens only on medical advice.
What are the substitutes for Ostocalcium Plus?
We have no other brand with exactly the same composition and strength in our list yet. Ask your pharmacist for an equivalent.
Sources and further reading
- Calcium phosphate: NIH Office of Dietary Supplements · NHS · MedlinePlus
- Vitamin D3 (cholecalciferol): NHS · MedlinePlus
NHS (UK National Health Service) and MedlinePlus (US National Library of Medicine) are free, reviewed medicine guides. Brand names and doses there may differ from India.
Composition checked against pack details from large Indian online pharmacies. Last reviewed 31 October 2026. Written by Satya Babu.
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