What it is
Ester-C is a patented, non-acidic form of Vitamin C (calcium ascorbate) that includes its natural metabolites. It is designed for enhanced absorption and sustained presence in the body.
Supplement · Vitamin
Ester-C (Calcium Ascorbate)
1000 mg · vegan · gluten-free · 90 caps
frequent infectionsslow-recoverylow-immunity immune systemlymphatic systemskin
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How it works
The metabolites in Ester-C facilitate the transport of Vitamin C into cells, potentially leading to higher concentrations and longer retention compared to standard ascorbic acid. It acts as an antioxidant and is essential for collagen synthesis, immune cell function, and wound healing.
Who should take it
Adults looking to address frequent infections, low immunity, slow recovery. Particularly relevant for people who prefer a targeted single ingredient and who have ruled out an underlying condition that needs medical care first.
Avoid / careful
Pregnant or nursing women without clinician oversight. People on prescription medication affecting the same pathway should consult a doctor before combining. Side effects are uncommon at recommended doses but mild GI upset can occur when starting.
When to take it
Morning
Noon
Evening
Night
How to take it
With food
Empty stomach
Before food
FAQs
Frequently asked
How is Ester-C different from regular Vitamin C?
Ester-C includes calcium ascorbate and its metabolites, which are believed to improve cellular uptake and retention of Vitamin C in the body compared to standard ascorbic acid.
Can I take Ester-C with other supplements?
Yes, Ester-C can be layered with other supplements. However, consult your clinician if you are on prescription medications, especially those affecting the immune system.
How long does it take to see benefits?
For immune resilience, benefits are typically noticeable within 2-6 weeks of consistent daily use.
Research
6 studies · 2010–2024
Evidence grade
ABCD
B · B · emerging-to-moderate human evidence for immune resilience
From the blog
Editorial notes
SacredBod's longer take on Ester-C (Calcium Ascorbate) — context the structured blocks above don't capture.
About Ester-C (Calcium Ascorbate)
Ester-C (Calcium Ascorbate) is a vitamin supplement used to support immune resilience. 24-hour buffered vitamin C with metabolites. It is available in tablet form and dosed for adults in India and internationally. As a western-tradition entry in the SacredBod catalog, it is positioned as a single-ingredient option that can be used on its own or layered into a broader protocol.
How it works
Ester-C (Calcium Ascorbate) works through the mechanisms characteristic of its class — see the mechanism and research sections for detail. It primarily acts on the immune system, lymphatic system, and effects are dose-dependent, typically becoming measurable within 2-6 weeks for immune resilience. Consistency matters more than dose size for this category.
Who it’s for
Adults looking to address frequent infections, low immunity, slow recovery. Particularly relevant for people who prefer a targeted single ingredient and who have ruled out an underlying condition that needs medical care first.
Evidence
Ester-C (Calcium Ascorbate) carries an evidence grade of B in the SacredBod catalog. 24-hour buffered vitamin C with metabolites. See the Research panel above for the underlying studies, participant counts and typical effect sizes.
Dosing & timing
Typical label dose is 1000 mg in tablet form. Most adults can expect noticeable effects within 2-6 weeks for immune resilience. Consistency matters more than a single large dose — take it daily and re-evaluate against your blood markers at 8–12 weeks.
Cautions
Pregnant or nursing women without clinician oversight. People on prescription medication affecting the same pathway should consult a doctor before combining. Side effects are uncommon at recommended doses but mild GI upset can occur when starting.
As part of the Vitamin category, Ester-C (Calcium Ascorbate) can be used on its own or layered into a broader protocol — see the Goes with panel for synergistic pairings.
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