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🦴

Calcium

8.8/10moderate

Evidence

Evidence Score8.8/10

Studies: 38+

Meta-analyses: 38

Dosage & Timing

Dosage:

1000–1200mg daily (split doses)

Best Time:

Split doses with meals, 500mg with breakfast, 500mg with dinner

Take with food

Form:

Calcium Citrate

What You'll Notice

🦴 Improved Bone Mineral Density70%

6-24 months

🛡️ Reduced Fracture Risk55%

12-36 months

🤱 Preeclampsia Prevention in Pregnancy65%

Throughout pregnancy

Safety

moderate safety rating

Contraindications:

Hypercalcemia (elevated blood calcium) — calcium supplementation is absolutely contraindicated
Hypercalciuria (elevated urinary calcium excretion) without medical supervision
Primary hyperparathyroidism without medical supervision

Drug Interactions:

Bisphosphonates (alendronate, risedronate)
Levothyroxine (thyroid hormone)
Tetracycline antibiotics (doxycycline, tetracycline)

Side Effects:

ConstipationBloating and gasNausea

Works Well With

Vitamin D3enhances

Vitamin K2complementary

Magnesiumcomplementary

Compare Supplements

Calcium

Evidence

Dosage & Timing

What You'll Notice

Safety

Works Well With

Categories

Compare Supplements

Calcium

Evidence

Dosage & Timing

What You'll Notice

Safety

Works Well With

Categories