Mineral
Calcium Citrate
Also known as: Calcium, Calcium citrate, Citracal
Well-absorbed calcium form that doesn't require stomach acid. Better for those on acid-reducing medications.
Primary uses
- Bone health
- Muscle function
- Nerve signaling
How it works
- Absorbed without stomach acid
- Good bioavailability
- May be better tolerated
Dosage
- Typical range
- 500-1000 mg daily in divided doses
- Timing
- Any time, divide doses
- With food
- Optional
- Duration
- Safe long-term
- Special populations
- Those on PPIs, older adults
Forms
- Tablet
- Capsule
Safety
Common side effects
- Constipation
- Bloating
Contraindications
- Hypercalcemia
- Kidney stones
Known interactions
- Warningwith calcium
Calcium significantly reduces iron absorption
- Cautionwith calcium
High calcium can impair magnesium absorption
- Cautionwith calcium
Calcium may reduce zinc absorption
- Synergywith vitamin d
Vitamin D enhances calcium absorption
- Infowith calcium
Antacids reduce calcium absorption
- Warningwith calcium
Calcium blocks thyroid medication absorption
Evidence notes
Well-absorbed calcium form
Grade A: Multiple well-designed human trials support the main claims.
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Open the checkerMedical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider.