Calcium Citrate
Calcium Citrate
BIOAVAILABLE BONE & MUSCLE SUPPORT
Calcium Citrate provides one of the most bioavailable and well-tolerated forms of calcium. It supports bone density, muscle contraction, nerve signaling, and cardiovascular rhythm — and can be taken with or without food, unlike calcium carbonate.
30-day supply
Key Benefits
Supports bone density and skeletal health
Highly bioavailable citrate form
Promotes muscle contraction and nerve signaling
Supports cardiovascular rhythm regulation
Supports These Goals
Linked Biomarkers
Our blood test can measure these markers to personalize your dose
Why you'll love it
Your skeleton isn't a static structure — it's constantly being remodeled, with old bone being broken down and new bone being built. This process requires a steady supply of calcium, and if your dietary intake falls short, your body pulls calcium from your bones to maintain the blood calcium levels that your heart and nerves need to function.
We chose the citrate form for a reason: it's approximately 20% more bioavailable than calcium carbonate (the most common and cheapest form), and it doesn't require stomach acid for absorption. This makes it ideal for anyone over 50 (when stomach acid production naturally declines), anyone taking acid-reducing medications, and anyone who prefers the flexibility of taking it with or without food.
Calcium works synergistically with vitamin D (which enhances its absorption) and vitamin K2 (which directs it into bones rather than soft tissues). If you supplement calcium, you should also ensure adequate D and K2 intake — which is why our D Complex pairs perfectly with this.
Clinical Evidence
Our recommendations are grounded in published clinical research. Here are key studies supporting the benefits of Calcium Citrate.
Calcium citrate is absorbed 22-27% better than calcium carbonate
Meta-analysis of calcium bioavailability: a comparison of calcium citrate with calcium carbonate
1999
Calcium supplements improve bone density in adults under 35
The effect of calcium supplementation in people under 35 years old: a systematic review and meta-analysis
2022
Study titles shown are simplified summaries of the original research for readability. Original titles are shown in italics below each heading. All studies cited are from peer-reviewed journals indexed in PubMed. Links open in a new tab to the original source. These studies are provided for informational purposes and do not constitute medical advice.
How much do I really need?
Take one 250mg capsule daily. Calcium absorption is most efficient in doses of 500mg or less, so this dose is optimized for bioavailability. Take at a different time than iron or zinc supplements, as they compete for absorption.
Safety & Transparency
Full transparency — here's exactly what's in every capsule, verified by our manufacturer.
Third-Party Tested
Every batch is independently tested by ISO-17025 accredited labs for purity, potency, and contaminants.
Doctor Formulated
Designed by healthcare professionals using evidence-based research and clinical expertise.
cGMP Certified
Manufactured in cGMP & UL certified, FDA-registered facilities with a flawless inspection record.
Important Information
Contraindications:
- •hypercalcemia
- •kidney stones
Those with hypercalcemia, kidney stones, or hyperparathyroidism should consult their healthcare provider before use.
As with any natural health product, you should consult your healthcare practitioner on the use of this product. Store product in a cool and dry place. Keep out of reach of children. If you experience an adverse event or allergic reaction, discontinue use immediately and contact a healthcare professional.
Still not sure what you need?
Take our Health Assessment and let our AI build a personalized stack — including whether Calcium Citrate is right for you.
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