ByDr. Brennan Commerford, D.C.·Last reviewed: April 2026
All Ingredients
Mineral1 form

Calcium Threonate

Evidence Level
Moderate Evidence

The Calcium Threonate form we carry

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Quick Answer

Which form of Calcium Threonate do we use?

Our formulary carries a single form of Calcium Threonate. See the details below.

All Forms of Calcium Threonate

FormTierForm ScoreDose RangeUnit
ThreonateCustomer Choice
Verification pending
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What is Calcium Threonate?

Calcium Threonate is a Mineral supplement available in 1 form.

FormulaForge carries a single form of Calcium Threonate, so there is no form to choose here. Forms on the market do differ in how well they absorb, which is why it is worth checking the form named on any product label.

The Form of Calcium Threonate We Carry

Calcium Threonate (Customer Choice) has a bioavailability rating of good absorption.

How to Choose the Right Form

Multiple forms of Calcium Threonate are available. Start by comparing form ratings — Preferred Forms reflect the strongest bioavailability evidence, and higher-absorption forms deliver more active compound per dose unit.

The appropriate form depends on your individual goals and your healthcare provider’s recommendations. Consult a qualified professional before selecting a supplement form.

Dosing & Safety

Individual dose requirements vary based on health goals, body weight, and existing nutrient intake. Your healthcare provider can help you determine an appropriate amount of Calcium Threonate for you.

Side Effects: Consult your healthcare provider regarding tolerability, particularly at higher doses.

These statements are based on structure/function research and have not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare provider before starting or changing a supplement regimen.

The Science

The following studies and findings inform FormulaForge classifications for Calcium Threonate:

In 14 healthy adults studied with a dual stable-isotope method (44Ca/42Ca), true fractional calcium absorption from calcium L-threonate was 26.49% ± 9.39% — a direct measurement of this compound. PMID: 23229796
In a comparative absorption study of 20 normal women using external forearm counting, fractional calcium absorption was 39.2% ± 8.6% from calcium citrate and 31.2% from calcium carbonate. PMID: 2273192

Dosing Guidance

Individual dose requirements for Calcium Threonate vary based on health goals, body weight, and existing dietary intake. A qualified healthcare provider can help you determine an appropriate amount for you.

Frequently Asked Questions

Which form of Calcium Threonate is in our formulary?
Our formulary carries a single form of Calcium Threonate. Focus on products that specify the form on the label — not all forms are equally absorbed by the body.
How much Calcium Threonate should I take?
Dosing for Calcium Threonate varies based on the specific form, your health goals, and individual factors. Consult a qualified healthcare provider for personalized guidance.
What does Calcium Threonate support?
Calcium Threonate is commonly used to support Mineral. Research suggests it plays a role in several physiological pathways. As with all supplements, these statements have not been evaluated by the Food and Drug Administration and Calcium Threonate is not intended to diagnose, treat, cure, or prevent any disease.
Is Calcium Threonate safe?
Calcium Threonate is generally well-tolerated when taken at research-supported doses. As with any supplement, individual responses vary. Consult a qualified healthcare provider before use, especially if you are pregnant, nursing, have a medical condition, or take medications. These statements have not been evaluated by the Food and Drug Administration.

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References

  1. In 14 healthy adults studied with a dual stable-isotope method (44Ca/42Ca), true fractional calcium absorption from calcium L-threonate was 26.49% ± 9.39% — a direct measurement of this compound. PubMed DOI
  2. In a comparative absorption study of 20 normal women using external forearm counting, fractional calcium absorption was 39.2% ± 8.6% from calcium citrate and 31.2% from calcium carbonate. PubMed DOI

FormulaForge formulates and sells supplements containing the ingredients discussed on this page. Our formulary recommendations are based on peer-reviewed bioavailability research. All cited studies are independently verifiable.