Calcium Supplement - Space Lifescience

Calcium Supplement Classification (Including Chelated Forms)

Calcium Type	Form	Chelated?	Elemental Calcium %	Bioavailability	GI Tolerance	Common Uses / Notes
Calcium Carbonate	Inorganic Salt	❌ No	~40%	Moderate	Low (Needs Acid)	Most common form; best taken with meals
Calcium Citrate	Organic Salt	❌ No	~21%	High	Excellent	Good for elderly & those with low stomach acid
Calcium Gluconate	Inorganic Salt	❌ No	~9%	Low	Good	Often used in IV or emergency formulations
Calcium Lactate	Organic Salt	❌ No	~13%	Moderate	Good	Used in food fortification and supplements
Calcium Phosphate	Inorganic Salt	❌ No	~39%	Moderate	Moderate	Supports both calcium and phosphorus intake
Calcium Citrate Malate	Chelated (Blended)	✅ Yes	~26%	Very High	Excellent	Used in premium supplements & juices
Calcium Malate	Chelated	✅ Yes	~15–25%	High	Very Good	Supports bone and muscle metabolism
Calcium Orotate	Chelated (Orotic Acid)	✅ Yes	~10–20%	High	Very Good	Cell-level absorption; premium bone support
MCHA (Hydroxyapatite)	Natural Bone Matrix	⚠️ Complex	~20–25%	High	Very Good	Contains bone-building minerals & collagen
Coral Calcium	Natural Mineral Source	❌ No	Varies	Moderate	Moderate	Often marketed with trace minerals