Independent reviews · Updated weekly Editorial & affiliate disclosures
HFL Health Findings Lab

Calcium

A fundamental mineral required for bone density and triggering muscle contractions during exercise.

Evidence-Based
Fact-Checked
Updated: Aug 26, 2026
Clinical Profile

While best known for skeletal health, calcium is also the specific mineral that triggers muscle fiber contraction. It is released from the sarcoplasmic reticulum inside muscle cells in response to nerve impulses, making it essential for athletic movement.

Clinical Summary

Essential for maintaining bone health and neuromuscular function.

Dosage Guidelines

10mg to 50mg typically found in sports gels to replace trace sweat losses.

Safety & Side Effects

Over-supplementation can lead to kidney stones or vascular calcification.

Known Interactions

Competes for absorption with iron and magnesium if taken in extremely high doses.

Scientific References

Medical Disclaimer

The information provided in this clinical review is for educational and informational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment.

*These statements have not been evaluated by the Food and Drug Administration (FDA). This product or ingredient is not intended to diagnose, treat, cure, or prevent any disease.

Always consult your physician or other qualified health provider with any questions you may have regarding a medical condition, or before beginning any new diet, fitness, supplement, or treatment regimen, especially if you have pre-existing medical conditions or are taking prescribed medications.

Articles discussing Calcium

Get new reviews in your inbox — weekly, never spammy.

Join our community of readers who use Health Findings Lab to cut through supplement marketing noise.