Calcium Ascorbate

Calcium Ascorbate is a Vitamin supplement available in 1 form.

FormulaForge carries a single form of Calcium Ascorbate, 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.

Calcium Ascorbate (Mapped Form) has a bioavailability rating of good absorption.

**Calcium ascorbate** is a mineral ascorbate form of vitamin C, combining ascorbic acid with calcium, used as a dietary supplement to provide vitamin C with added calcium.

Founder ruling 2026-10-02 (verbatim "vitamin C 1.0"): all ascorbate salts declared as vitamin C map to PureWay-C (PNVTD0027) at ONE shared DCR; supersedes 0.83, which rested on a LipoVantage liposomal trial (a different product) and is no longer cited. PNVTD0027 = liposomal grade dosed as mg vitamin C (https://github.com/precisionbioage/FormulaForge/pull/4537#issuecomment-5961416064).

Pancorbo 2008 Med Sci Monit: after a 14-day low-vitamin-C diet, single 1000 mg doses of ascorbic acid, calcium ascorbate, PureWay-C or Ester-C; PureWay-C gave the highest serum vitamin C, significant vs calcium ascorbate at 1, 2, 4 and 6 h. No numeric ratio in the abstract; small single-centre study, no independent replication located. Read as: no defensible bioavailability credit for PureWay-C. PMID: 18971870

Dickerson 2024 Nutrients: two randomized double-blind crossover trials (250 mg, n=46; 500 mg, n=47): no difference between ascorbic acid and calcium ascorbate at 250 mg; at 500 mg calcium ascorbate showed some PK / immune-marker differences. Supports one vitamin C basis across salts at label doses; not a bioavailability credit. PMID: 39408325

Multiple forms of Calcium Ascorbate 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.

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 Ascorbate 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 following studies and findings inform FormulaForge classifications for Calcium Ascorbate:

Founder ruling 2026-10-02 (verbatim "vitamin C 1.0"): all ascorbate salts declared as vitamin C map to PureWay-C (PNVTD0027) at ONE shared DCR; supersedes 0.83, which rested on a LipoVantage liposomal trial (a different product) and is no longer cited. PNVTD0027 = liposomal grade dosed as mg vitamin C (https://github.com/precisionbioage/FormulaForge/pull/4537#issuecomment-5961416064).

Pancorbo 2008 Med Sci Monit: after a 14-day low-vitamin-C diet, single 1000 mg doses of ascorbic acid, calcium ascorbate, PureWay-C or Ester-C; PureWay-C gave the highest serum vitamin C, significant vs calcium ascorbate at 1, 2, 4 and 6 h. No numeric ratio in the abstract; small single-centre study, no independent replication located. Read as: no defensible bioavailability credit for PureWay-C. PMID: 18971870

Dickerson 2024 Nutrients: two randomized double-blind crossover trials (250 mg, n=46; 500 mg, n=47): no difference between ascorbic acid and calcium ascorbate at 250 mg; at 500 mg calcium ascorbate showed some PK / immune-marker differences. Supports one vitamin C basis across salts at label doses; not a bioavailability credit. PMID: 39408325