Search peptides — top sellers first
Search peptides — top sellers first
Search peptides — top sellers first
Buffered ascorbic acid for immune function, collagen formation, and antioxidant capacity.
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Vitamin C · mg
Frequently bought together
Researchers usually add these to complete the protocol.
Zinc Bisglycinate · mg
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L-Theanine · mg
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Vitamin D3 + K2 · mg
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Certificate of analysis
We don't publish a brand-wide spec sheet and call it a “COA.” The certificate you receive references the actual lot number stamped on your vial — with the raw chromatograms attached.
Vantage Analytical
Independent analytical lab
Certificate of Analysis
RESULT · PASS
Analytical results
HPLC Chromatogram
Purity
Know your compound
Vitamin C is a water-soluble nutrient your body cannot make. Humans are among the few mammals that lost that ability, so all of it comes from food or supplements. It works as a required cofactor for the enzymes that hydroxylate proline and lysine — the step that lets collagen triple-helices form and hold. Buffered means the ascorbic acid is paired with mineral salts to raise the pH and reduce stomach upset.
The collagen role is settled science: vitamin C deficiency causes scurvy, and restoring it reverses the mechanism. Common-cold research is far more modest — meta-analyses show a small effect on cold duration and essentially none on how often people catch one. The exception is people under extreme physical stress, where the duration effect is larger.
For research use only — not for human or veterinary use.
The research
The published findings behind this compound — the headline numbers, in plain terms, each cited to source. Preclinical results are directional (animal / in-vitro) and shown for context, not as therapeutic claims.
Published research on the reference compound class. Provided for scientific context only — not a claim about the product supplied.
Vitamin C is an essential cofactor the body needs to build collagen — without it, the enzymes that stabilize collagen in skin can't work, which is the mechanism that fails in scurvy.
Required for prolyl/lysyl hydroxylase activity in collagen synthesis.
Across pooled human trials, regular vitamin C was linked to a small shortening of how long colds last — with a larger effect only in people under extreme physical stress.
Directional; meta-analyses did not converge on one precise figure.
In the general population, pooled human trials found essentially no effect of vitamin C on how often people catch colds — the exception being people under extreme physical stress.
Little to no effect on incidence outside physically-stressed groups.
Mechanism
Vitamin C is studied to act through three distinct routes in the body.
It serves as a cofactor for the enzymes that hydroxylate proline and lysine, the step that lets collagen triple-helices form and stabilize.
As a water-soluble antioxidant it donates electrons to neutralize reactive species and helps regenerate oxidized vitamin E.
It reduces dietary iron to a more absorbable form, and is studied for increasing absorption of non-heme iron from plant foods.
For research use only. Mechanisms described reflect published preclinical and clinical literature.
The process
Synthesized
Produced under controlled manufacturing with documented, repeatable processes.
HPLC purity
An independent lab reports the exact purity of every lot — a number, never a 'passes'.
Mass-spec identity
Molecular weight confirms the exact sequence is what the label says.
COA published
The certificate is posted to the open library, by lot, before the vial ships.
Best sellers
FAQ
Common questions about Vitamin C
The COA guarantee
Have any lot independently re-tested. If the results don't match the published certificate, we refund the order in full — no returns, no questions.
Order with coverThird-party tested
An independent, accredited lab — no commercial interest in the result.
A COA on every lot
A lot-specific certificate ships with each vial, archived by batch.
Test it yourself → refund
Re-test any batch at any lab. A mismatch is a full refund.
