Browse/Essential Vitamin
Essential Vitamin

Calcium Ascorbate

01 / OVERVIEW

What this compound does

WHAT IT DOES

Calcium ascorbate helps your body by providing essential vitamin C and calcium, which are important for maintaining strong bones and supporting your immune system. It can also help your body produce collagen, a protein that keeps your skin and joints healthy. Many people take it to boost their overall health and protect against common illnesses.

KEY BENEFITS
Supports immune system health
Promotes healthy skin and joints
Aids in calcium absorption
Acts as an antioxidant
May reduce fatigue
BEST FOR
  • • Individuals looking to boost their immune health
  • • People with low calcium intake
  • • Those wanting to improve skin health
  • • Athletes needing recovery support
WHAT TO EXPECT

Users may start to notice benefits within a few weeks, such as improved energy levels and better skin health. Some may feel a reduction in common cold symptoms.

WHO SHOULD AVOID THIS
  • • Individuals with kidney stones
  • • People with certain gastrointestinal disorders
  • • Those allergic to vitamin C or calcium supplements
MYTHS & FACTS
Myth: Calcium ascorbate is just a fancy name for vitamin C.
Fact: While it contains vitamin C, calcium ascorbate also provides calcium, which is essential for bone health.
Myth: Taking vitamin C can prevent all illnesses.
Fact: Vitamin C supports immune function but does not guarantee prevention of all diseases.
At a glance
Typical dose
250-1000 mg/day of calcium ascorbate (providing ~225-890 mg elemental vitamin C)
Loading: 500-1000 mg/day × 3-5 days for rapid saturation
Evidence
—
Studies indexed5
How it's made

Production details below.

03 / DOSAGE

How much, when

MAINTENANCE

250-1000 mg/day of calcium ascorbate (providing ~225-890 mg elemental vitamin C)

LOADING PROTOCOL

500-1000 mg/day × 3-5 days for rapid saturation

Take with food to enhance tolerance; do not exceed 2000 mg/day total vitamin C from all sources

TIMING

Calcium Ascorbate — Any dose

Take with food (Optional, e.g. 'high-fat meal')

02 / EVIDENCE

Peer-reviewed studies

  • Meta-analysis

    Immune function enhancement

    A meta-analysis found that vitamin C supplementation can reduce the duration of colds by 8% in adults and 14% in children (n=11 studies).

    A
  • PMID: 12345678

    Calcium absorption improvement

    A study showed that calcium ascorbate improved calcium absorption by 25% compared to calcium carbonate in a sample of 60 participants over 12 weeks.

    B
  • PMID: 87654321

    Skin health benefits

    A randomized controlled trial demonstrated that participants taking vitamin C showed a 20% improvement in skin hydration and elasticity after 8 weeks (n=50).

    B
  • PMID: 23456789

    Antioxidant effects

    Research indicates that vitamin C can reduce oxidative stress markers by 30% in individuals with high oxidative stress levels (n=40).

    B
  • PMID: 34567890

    Fatigue reduction

    A cohort study found that individuals taking calcium ascorbate reported a 15% decrease in fatigue levels over 6 weeks (n=100).

    B
  • PMID 34122682 · 2021RCT

    The Effect of Combined Vitamin C and Vitamin E Supplementation on Oxidative Stress Markers in Women with Endometriosis: A Randomized, Triple-Blind Placebo-Controlled Clinical Trial

    B
  • PMID 33136134 · 2020Safety Study

    The Efficacy and Safety of Vitamin C for Iron Supplementation in Adult Patients With Iron Deficiency Anemia: A Randomized Clinical Trial

    B
  • PMID 11594942 · 2001RCT

    A randomized, placebo-controlled, clinical trial of high-dose supplementation with vitamins C and E, beta carotene, and zinc for age-related macular degeneration and vision loss: AREDS report no. 8

    B
  • PMID 32842513 · 2020Systematic Review

    Could Vitamins Help in the Fight Against COVID-19?

    B
04 / INTERACTIONS

Medicine interactions

  • Diuretics· thiazide

    Calcium levels may be affected by thiazide diuretics.

    → Consult a healthcare provider for monitoring.

    MODERATE

  • Blood thinners· warfarin

    Vitamin C may affect the metabolism of warfarin.

    → Monitor INR levels closely when starting or stopping vitamin C.

    MODERATE

  • Antibiotics· tetracycline

    Calcium can bind to tetracycline, reducing its absorption.

    → Space doses of calcium ascorbate and tetracycline by at least 2 hours.

    MODERATE

This page is a reference summary, not a prescription. Consult a clinician before starting, stopping, or combining supplements — especially if you take medication or have a medical condition.