Last update
3/19/2026
Reviewed By
Overview
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
USERS' SCORE
Good
Based on 34 Reviews
8.3
Supplement Facts
Serving Size: 1 Veg Capsule
Amount Per Serving
%DV
Calcium (from Fossilized Coral Calcium)
350 mg
27%
Fossilized Coral Calcium
1 g (1,000 mg)
†
Top Medical Research Studies
8
We explored the impact of calcium treatment on bone pain in patients who developed osteomalacia, a condition linked to intravenous iron infusions. Our focus was on a group of 13 patients diagnosed with this condition, who experienced low phosphate levels due to excess fibroblast growth factor 23 (iFGF23) after receiving ferric carboxymaltose (FCM) infusions.
After halting the FCM infusions, these patients were given supportive treatment, which included phosphate, calcium, and active Vitamin D supplementation. We observed improvements in biochemical markers, including increased phosphate levels and reduced pain scores. However, it’s important to note that while calcium was part of the treatment regimen, we could not isolate its specific effects on bone pain from the other supportive measures used.
Ultimately, our findings highlight the importance of monitoring phosphate levels in patients receiving FCM, and stopping these infusions effectively addresses phosphate wasting. Although supportive treatment showed improvements in pain and bone density, the direct impact of calcium on bone pain remains unclear given the combination of treatments involved.
After halting the FCM infusions, these patients were given supportive treatment, which included phosphate, calcium, and active Vitamin D supplementation. We observed improvements in biochemical markers, including increased phosphate levels and reduced pain scores. However, it’s important to note that while calcium was part of the treatment regimen, we could not isolate its specific effects on bone pain from the other supportive measures used.
Ultimately, our findings highlight the importance of monitoring phosphate levels in patients receiving FCM, and stopping these infusions effectively addresses phosphate wasting. Although supportive treatment showed improvements in pain and bone density, the direct impact of calcium on bone pain remains unclear given the combination of treatments involved.
Read More
Most Useful Reviews
9
Excellent results
4 people found this helpful
After a break, I reordered this supplement. My husband and I take it to maintain healthy bones. I was diagnosed with calcium deficiency and took it on my doctor's recommendation for a month. It helps with my bone pain, and the doctor suggested a repeat course due to its excellent results.
Read More
9
Great for recovery
2 people found this helpful
This calcium was recommended when my mother-in-law fractured her hip. With osteoporosis, she struggled to heal until she started taking this coral calcium. To her doctors’ surprise, her calcium levels improved significantly. It has truly aided her recovery after surgery, enabling her to become more mobile. I also take it for allergies and found it beneficial, as calcium helps improve skin health during flare-ups.
Read More
9
Promising recovery
1 people found this helpful
It aided the healing of bones after a fracture. I purchased it for my 74-year-old mother as a support for bone growth post-injury. She commenced the medication two weeks following her injury. After three weeks of treatment, her X-ray results were excellent. She took it with magnesium and vitamin D3, which she also bought from IHerb. Additionally, she took vitamin K2. We are thoroughly pleased, thank you, IHerb!
Read More
Medical Researches
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
- All Researches
8
We explored the impact of calcium treatment on bone pain in patients who developed osteomalacia, a condition linked to intravenous iron infusions. Our focus was on a group of 13 patients diagnosed with this condition, who experienced low phosphate levels due to excess fibroblast growth factor 23 (iFGF23) after receiving ferric carboxymaltose (FCM) infusions.
After halting the FCM infusions, these patients were given supportive treatment, which included phosphate, calcium, and active Vitamin D supplementation. We observed improvements in biochemical markers, including increased phosphate levels and reduced pain scores. However, it’s important to note that while calcium was part of the treatment regimen, we could not isolate its specific effects on bone pain from the other supportive measures used.
Ultimately, our findings highlight the importance of monitoring phosphate levels in patients receiving FCM, and stopping these infusions effectively addresses phosphate wasting. Although supportive treatment showed improvements in pain and bone density, the direct impact of calcium on bone pain remains unclear given the combination of treatments involved.
After halting the FCM infusions, these patients were given supportive treatment, which included phosphate, calcium, and active Vitamin D supplementation. We observed improvements in biochemical markers, including increased phosphate levels and reduced pain scores. However, it’s important to note that while calcium was part of the treatment regimen, we could not isolate its specific effects on bone pain from the other supportive measures used.
Ultimately, our findings highlight the importance of monitoring phosphate levels in patients receiving FCM, and stopping these infusions effectively addresses phosphate wasting. Although supportive treatment showed improvements in pain and bone density, the direct impact of calcium on bone pain remains unclear given the combination of treatments involved.
Read More
User Reviews
USERS' SCORE
Good
Based on 34 Reviews
8.3
- All Reviews
- Positive Reviews
- Negative Reviews
9
Excellent results
4 people found this helpful
After a break, I reordered this supplement. My husband and I take it to maintain healthy bones. I was diagnosed with calcium deficiency and took it on my doctor's recommendation for a month. It helps with my bone pain, and the doctor suggested a repeat course due to its excellent results.
Read More
9
Great for recovery
2 people found this helpful
This calcium was recommended when my mother-in-law fractured her hip. With osteoporosis, she struggled to heal until she started taking this coral calcium. To her doctors’ surprise, her calcium levels improved significantly. It has truly aided her recovery after surgery, enabling her to become more mobile. I also take it for allergies and found it beneficial, as calcium helps improve skin health during flare-ups.
Read More
9
Promising recovery
1 people found this helpful
It aided the healing of bones after a fracture. I purchased it for my 74-year-old mother as a support for bone growth post-injury. She commenced the medication two weeks following her injury. After three weeks of treatment, her X-ray results were excellent. She took it with magnesium and vitamin D3, which she also bought from IHerb. Additionally, she took vitamin K2. We are thoroughly pleased, thank you, IHerb!
Read More
9
Sore back relief
1 people found this helpful
The quality is exceptional. At 45, my sore back has ceased hurting, which is extraordinary! The creaking and pain are gone, with a rapid improvement in my wellbeing.
Read More
9
Pain relief
1 people found this helpful
This calcium supplement works remarkably well. It’s not the first brand we've tried; all my relatives like it. My bones have literally stopped hurting. Just remember to avoid overdose and keep an eye on your blood levels.
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Frequently Asked Questions
9
Effective supplement
Excellent product! I've noticed improvements in my bone strength after just two weeks of taking Coral calcium. It is the best for my body, effectively addressing deficiencies.
9
Great for recovery
2 people found this helpful
This calcium was recommended when my mother-in-law fractured her hip. With osteoporosis, she struggled to heal until she started taking this coral calcium. To her doctors’ surprise, her calcium levels improved significantly. It has truly aided her recovery after surgery, enabling her to become more mobile. I also take it for allergies and found it beneficial, as calcium helps improve skin health during flare-ups.
9
Promising recovery
1 people found this helpful
It aided the healing of bones after a fracture. I purchased it for my 74-year-old mother as a support for bone growth post-injury. She commenced the medication two weeks following her injury. After three weeks of treatment, her X-ray results were excellent. She took it with magnesium and vitamin D3, which she also bought from IHerb. Additionally, she took vitamin K2. We are thoroughly pleased, thank you, IHerb!
9
Excellent results
4 people found this helpful
After a break, I reordered this supplement. My husband and I take it to maintain healthy bones. I was diagnosed with calcium deficiency and took it on my doctor's recommendation for a month. It helps with my bone pain, and the doctor suggested a repeat course due to its excellent results.
9
Effective for age-related issues
1 people found this helpful
My 77-year-old mother has experienced typical age-related bone problems. This calcium was recommended to me due to its effective and rapid incorporation into bones. We are pleased with the results, as various bone issues have disappeared thanks to consistent intake. It genuinely works, so I highly recommend it.
References
- von Brackel FN, Grambeck J, Barvencik F, Amling M, Oheim R. In-depth clinical characterization of intravenous iron infusion-induced hypophosphatemic osteomalacia and its resolution. JBMR Plus. 2024;8:ziae139. 10.1093/jbmrpl/ziae139
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