Best Vitamin C
The best vitamin c we track, ranked by real cost-per-dose — not paid placements. Across 48 brands, 5 are third-party tested in a public registry.
Updated October 2026prices checked what’s changed
How much does Vitamin C cost?
Vitamin C costs a median $0.12 per serving — the cheapest of the 75 we can price per dose is $0.04 per serving, or $0.02/day to reach the commonly-studied 500 mg dose. Prices checked October 2026.
Ranked across 77 products · prices checked Oct 10, 2026
3rd-party testedNature Made Vitamin C 500 mg with Rose Hips Caplets
USP Verified brand at $0.05 per serving.
How we rank
We rank by cost-per-dose — price ÷ servings, normalized to the daily dose (500 mg/day) — so bottle sizes and strengths compare fairly. Prices are scraped at publication and re-checked when the catalog refreshes (see the “Prices checked” stamp above). There is no paid placement and no kickback for ordering. Full methodology · Editorial standards.
When cheapest ≠ best value
The cheapest bottle isn’t automatically the best value: a low-absorption form (magnesium oxide is the classic example) can look cheap per milligram yet deliver less of what you actually absorb. Where forms differ, compare cost per absorbed or elemental unit, not the compound weight on the label. A bigger bottle isn’t automatically cheaper per dose either — this list already ranks by cost per dose, so a larger count only wins if it truly costs less per serving. Compare Vitamin C forms.
Our data on this: how much the big bottle saves per serving · the gummy tax · the form premium · the price spread.
Full ranking by cost per dose
Cost-per-serving normalizes price across bottle sizes — a 60-count and a 365-count compare fairly. Top 20 of 77 shown.
- See offer#1Best valueBronson Vitamin C 500 MG Supports a Healthy Immune…
tablet · 500mg · 250 servings · $9.99
$0.04per serving$0.04 / 500 mg - See offer$0.05per serving1.2× #1$0.02 / 500 mg
- See offer$0.05per serving1.2× #1$0.05 / 500 mg
- See offer$0.05per serving1.2× #1$0.05 / 500 mg
- See offer$0.05per serving1.3× #1$0.05 / 500 mg
- See offer$0.05per serving1.4× #1$0.03 / 500 mg
- See offer$0.05per serving1.4× #1$0.03 / 500 mg
- See offer$0.06per serving1.4× #1$0.06 / 500 mg
- See offer$0.06per serving1.4× #1$0.06 / 500 mg
- See offer$0.07per serving1.7× #1$0.03 / 500 mg
- See offer$0.07per serving1.7× #1$0.35 / 500 mg
- See offer$0.07per serving1.8× #1$0.04 / 500 mg
- See offer$0.07per serving1.9× #1$0.37 / 500 mg
- See offer$0.07per serving1.9× #1$0.04 / 500 mg
- See offer$0.07per serving1.9× #1$0.07 / 500 mg
- See offer$0.08per serving1.9× #1$0.04 / 500 mg
- See offer$0.08per serving1.9× #1$0.04 / 500 mg
- See offer$0.08per serving2.0× #1$0.04 / 500 mg
- See offer$0.08per serving2.0× #1$0.04 / 500 mg
- See offer$0.09per serving2.1× #1$0.04 / 500 mg
See also: Vitamin C basics · all best-value rankings · vitamin c cost-per-dose breakdown
Read: Vitamin C guides
Related comparisons, stacks & nutrients
Vitamin C brands we compare — which are third-party tested?
5 of the 48 brands ranked above appear in an independent certifier's own public registry. A certification confirms the label matches the contents — it says nothing about how well the supplement works, and an uncertified brand is not automatically worse.
- BulkSupplements.com NSF Sport
- Nature Made USP
- Nordic Naturals NSF Sport
- Sports Research Informed Choice
- Thorne NSF Sport
- Advanced Bionetix
- Airborne
- Amazing Nutrition
- Amazon Elements
- American Health
- Andrew Lessman
- aSquared Nutrition
- Bronson
- Carlyle
- Codeage
- Core Med Science
- DACHA
- Doctor's BEST
- Dr. Mercola
- Emergen-C
- Ester-C
- ForestLeaf
- Garden of Life
- Herbtonics
- Horbäach
- Integrative Therapeutics
- MARYRUTH'S
- MegaFood
- Mother Nature Organics Superfoods for Organic Living
- NAKED
- Nature's Bounty
- Nature's Truth
- Nature's Way
- Nature's Wonder
- NatureWise
- NOW
- NOW Foods
- Nutricost
- NutriFlair
- Pure Encapsulations
- Research Labs
- SIGNIFY NATURE
- Solaray
- Solgar
- Stonehenge Health
- SuperSmart USA LLC
- Swanson
- Viminz
Frequently asked
How much does Vitamin C cost?+
The cheapest vitamin c we track is $0.04 per serving ($9.99 for 250 servings), against a typical $0.12 per serving across the 75 we can price per dose — about $1.20 a month at the cheapest. That's real cost per dose from live Amazon US prices as of October 2026, not the sticker price.
What is the best-value Vitamin C supplement?+
Bronson Vitamin C 500 MG Supports a Healthy Immune System & Antioxidant… — $0.04 per serving ($9.99 for 250 servings), the lowest cost-per-dose vitamin c in our Amazon US catalog as of October 2026.
How much does Vitamin C cost per day?+
The cheapest vitamin c we track works out to $0.04 per serving, against a typical $0.12 per serving across the 75 we can price per dose; to reach the commonly-studied 500 mg/day dose the cheapest is $0.02/day. Retailers and review sites list a price and a serving size but rarely divide it out — this is what a day actually costs, as of October 2026.
What is the typical cost per dose for Vitamin C?+
About $0.12 per serving across the 75 vitamin c products we can price per dose (combination products are left out — their single label dose belongs to whichever ingredient the product is built around) — the cheapest we track is $0.04 per serving, with most falling between $0.08 and $0.23.
What's the cheapest effective Vitamin C?+
To reach the commonly-studied 500 mg/day dose, Amazon Elements Vitamin C is the best value at $0.02 per day — cheaper than bottles that look low-priced per serving but are underdosed.
What is the highest-quality Vitamin C supplement?+
Of the 48 vitamin c brands ranked here, 5 hold a third-party certification we could verify in a public registry: BulkSupplements.com (NSF Certified for Sport), Nature Made (USP Verified), Nordic Naturals (NSF Certified for Sport), Sports Research (Informed Choice), Thorne (NSF Certified for Sport). Certification means an independent lab confirmed the label matches the contents and screened for contaminants — it does not rate how well the supplement works. The cheapest certified option is Nature Made Vitamin C 500 mg with Rose Hips Caplets at $0.05 per serving.
Which Vitamin C brands are third-party tested?+
BulkSupplements.com — NSF Certified for Sport; Nature Made — USP Verified; Nordic Naturals — NSF Certified for Sport; Sports Research — Informed Choice; Thorne — NSF Certified for Sport. We only count a brand as tested when it appears in the certifier's own public registry (USP Verified, NSF Certified for Sport, Informed Choice), never on a claim printed on the label. The remaining 43 brands on this page have no certification we could verify.
Which Vitamin C is the top rated?+
We don't republish marketplace star ratings — they belong to the retailer, they move constantly, and a 4.6 average tells you nothing about what is in the capsule. The two things you can verify are what a dose costs and whether an independent lab checked the label. On both counts, Nature Made Vitamin C 500 mg with Rose Hips Caplets stands out: NSF Certified for Sport certified at $0.05 per serving.
Independent testing
5 of 48 tracked Vitamin C brands here are flagged as carrying independent third-party testing — a voluntary check of a product's identity, potency and contaminants by an outside lab. It's a quality signal, not a value or efficacy claim. Confirm any brand's current status on the official registries:
Testing status is self-reported by the brand or drawn from public certification and may change — always verify on the official registry before purchase.
References & sources
- Vitamin C — Health Professional fact sheet — NIH Office of Dietary Supplements
- USP Verified product participants — U.S. Pharmacopeia
- NSF certified products — NSF
We link primary sources and paraphrase their findings — never copy their text, tables, or images. Cost-per-dose figures are our own first-party catalog data.