How does DoseRank decide what ranks #1?

Each product gets a composite score blending clinical strength, evidence, dose fit, trust and value. The #1 on the DoseRank tab has the highest composite; the other tabs re-rank the same products by Value, Trust, or Popularity. Placement is never paid.

Is a higher dose always better?

No. Dose-fit rewards landing inside the range studied for the outcome — over-dosing (common with melatonin) or under-dosing both lower the score. The goal is the effective dose, not the biggest number.

What does the Value score mean?

The Value score compares a product's price per serving with clinically relevant products ranked for the same outcome. A score of 50 is the typical price; above 50 means better value than typical, while below 50 means the product costs more than typical. It is a 0–100 value signal, not a percentile.

Why is the cheapest product not #1?

Cost is only one input. The cheapest pick here is a citrate form with weaker absorption and a stock-risk flag, so it leads on Value-for-cost but trails on the composite that also weighs evidence, dose fit and availability.

Are these affiliate links?

Retailer links may be affiliate links and DoseRank may earn a commission. Rankings and placement are determined by the scoring model only — never by payment from a brand.

Is this medical advice?

No. DoseRank summarizes evidence to help you choose; it is not a substitute for a clinician, especially if you are pregnant, breastfeeding, on medication, or managing a health condition.

DOSERANKEVIDENCE-BASED SUPPLEMENTS

Improve vitamin C status

DOSERANKEVIDENCE-BASED SUPPLEMENTS

Best Supplements for Vitamin C status — 4686 Ranked | DOSERANK

Top decision cards

Best products for vitamin c status

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for vitamin c status

Swanson Vitamins, Acerola, 500 mg, 60 Capsules

Swanson Vitamins$0.11 / serving4.8 · 767Available now

Also helps with

Antioxidant capacity

Why this ranks here

Evidence fitVitamin C and Acerola are the strongest evidence signals for this outcome.
Dose fit2 of 2 dosed ingredients land in the studied range. Vitamin C at 125 mg lands inside the studied 100-1000 mg window.
Price / serving$0.11 per serving — low price tier for this outcome.
AvailabilityIn stock across major retailers; 99% availability confidence.
TrustSolid trust signals from buyer ratings, with room to grow.

The numbers

125 mgIn rangeinside the studied 100-1000 mg window

500 mgIn rangeinside the studied 500-2000 mg window

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

Nutricost, Camu Camu, 120 Capsules

NutricostClinical97Dose fit70Popularity84$0.22/ serving

Solaray, Timed Release, Vitamin C with Rose Hips & Acerola, 1,000 mg, 250 Tablets

SolarayClinical92Dose fit62Popularity91$0.12/ serving

Solaray, Timed Release Vitamin C with Rose Hips & Acerola, 1,000 mg, 250 VegCaps

SolarayClinical92Dose fit62Popularity89$0.12/ serving

Solaray, Timed Release Vitamin C with Rose Hip & Acerola, 1,000 mg, 100 Tablets

SolarayClinical92Dose fit62Popularity91$0.14/ serving

Solaray, Timed Release Vitamin C with Rose Hips & Acerola, 1,000 mg, 100 VegCaps

SolarayClinical92Dose fit62Popularity80$0.14/ serving

21st Century, Vitamin C, 500 mg, 250 Tablets

21st CenturyClinical89Dose fit78Popularity96$0.03/ serving

California Gold Nutrition, Gold C®, USP Grade Vitamin C, 500 mg, 240 Veggie Capsules

California Gold NutritionClinical89Dose fit78Popularity99$0.05/ serving

California Gold Nutrition, Gold C® Powder, USP Grade Vitamin C, 1,000 mg, 8.81 oz (250 g)

California Gold NutritionClinical89Dose fit90Popularity96$0.03/ serving

California Gold Nutrition, Gold C®, USP Grade Vitamin C, 1,000 mg, 240 Veggie Capsules

California Gold NutritionClinical89Dose fit90Popularity100$0.06/ serving

Top decision cards

Best products for vitamin c status

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for vitamin c status

Swanson Vitamins, Acerola, 500 mg, 60 Capsules

Swanson Vitamins$0.11 / serving4.8 · 767Available now

Also helps with

Antioxidant capacity

Why this ranks here

Evidence fitVitamin C and Acerola are the strongest evidence signals for this outcome.
Dose fit2 of 2 dosed ingredients land in the studied range. Vitamin C at 125 mg lands inside the studied 100-1000 mg window.
Price / serving$0.11 per serving — low price tier for this outcome.
AvailabilityIn stock across major retailers; 99% availability confidence.
TrustSolid trust signals from buyer ratings, with room to grow.

The numbers

125 mgIn rangeinside the studied 100-1000 mg window

500 mgIn rangeinside the studied 500-2000 mg window

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

Nutricost, Camu Camu, 120 Capsules

NutricostClinical97Dose fit70Popularity84$0.22/ serving

Solaray, Timed Release, Vitamin C with Rose Hips & Acerola, 1,000 mg, 250 Tablets

SolarayClinical92Dose fit62Popularity91$0.12/ serving

Solaray, Timed Release Vitamin C with Rose Hips & Acerola, 1,000 mg, 250 VegCaps

SolarayClinical92Dose fit62Popularity89$0.12/ serving

Solaray, Timed Release Vitamin C with Rose Hip & Acerola, 1,000 mg, 100 Tablets

SolarayClinical92Dose fit62Popularity91$0.14/ serving

Solaray, Timed Release Vitamin C with Rose Hips & Acerola, 1,000 mg, 100 VegCaps

SolarayClinical92Dose fit62Popularity80$0.14/ serving

21st Century, Vitamin C, 500 mg, 250 Tablets

21st CenturyClinical89Dose fit78Popularity96$0.03/ serving

California Gold Nutrition, Gold C®, USP Grade Vitamin C, 500 mg, 240 Veggie Capsules

California Gold NutritionClinical89Dose fit78Popularity99$0.05/ serving

California Gold Nutrition, Gold C® Powder, USP Grade Vitamin C, 1,000 mg, 8.81 oz (250 g)

California Gold NutritionClinical89Dose fit90Popularity96$0.03/ serving

California Gold Nutrition, Gold C®, USP Grade Vitamin C, 1,000 mg, 240 Veggie Capsules

California Gold NutritionClinical89Dose fit90Popularity100$0.06/ serving

Improve vitamin C status

Improve vitamin C status

Which ingredient types matter for vitamin c statusOpen to see which ingredient types matter for vitamin c status

Vitamins

Botanicals/Herbal Extracts

Best products for vitamin c status

Swanson Vitamins, Acerola, 500 mg, 60 Capsules

Nutricost, Camu Camu, 120 Capsules

Solaray, Timed Release, Vitamin C with Rose Hips & Acerola, 1,000 mg, 250 Tablets

Solaray, Timed Release Vitamin C with Rose Hips & Acerola, 1,000 mg, 250 VegCaps

Solaray, Timed Release Vitamin C with Rose Hip & Acerola, 1,000 mg, 100 Tablets

Solaray, Timed Release Vitamin C with Rose Hips & Acerola, 1,000 mg, 100 VegCaps

21st Century, Vitamin C, 500 mg, 250 Tablets

California Gold Nutrition, Gold C®, USP Grade Vitamin C, 500 mg, 240 Veggie Capsules

California Gold Nutrition, Gold C® Powder, USP Grade Vitamin C, 1,000 mg, 8.81 oz (250 g)

California Gold Nutrition, Gold C®, USP Grade Vitamin C, 1,000 mg, 240 Veggie Capsules

What every metric means

Compare the top 3, side by side

Not sure which is right for you?

Get a personal report

Frequently asked

Which ingredient types matter for vitamin c statusOpen to see which ingredient types matter for vitamin c status

Vitamins

Botanicals/Herbal Extracts

Compare the top 3, side by side

Best products for vitamin c status

Swanson Vitamins, Acerola, 500 mg, 60 Capsules

Nutricost, Camu Camu, 120 Capsules

Solaray, Timed Release, Vitamin C with Rose Hips & Acerola, 1,000 mg, 250 Tablets

Solaray, Timed Release Vitamin C with Rose Hips & Acerola, 1,000 mg, 250 VegCaps

Solaray, Timed Release Vitamin C with Rose Hip & Acerola, 1,000 mg, 100 Tablets

Solaray, Timed Release Vitamin C with Rose Hips & Acerola, 1,000 mg, 100 VegCaps

21st Century, Vitamin C, 500 mg, 250 Tablets

California Gold Nutrition, Gold C®, USP Grade Vitamin C, 500 mg, 240 Veggie Capsules

California Gold Nutrition, Gold C® Powder, USP Grade Vitamin C, 1,000 mg, 8.81 oz (250 g)

California Gold Nutrition, Gold C®, USP Grade Vitamin C, 1,000 mg, 240 Veggie Capsules