Everything DoseRank tracks on the vitamin c shelf — Ascorbic Acid and Acerola. The category itself is never ranked: 1.1k products get scored the moment you say what you want them to do.
How to read the scores
This legend covers the scores on this page — for data sources, scoring weights, and limits, read the full methodology →
Answer a few questions about your goals, habits, stack, and budget. Then, DoseRank will find the products that best match your needs based on your answers. It's free and only takes 60 seconds! No account is required.
A saved, shareable breakdown: your matched products, dose math, interaction flags to discuss with a clinician, and a price-tracked stack you can revisit.
Questions
Each product gets a composite score blending clinical strength, evidence, dose fit, trust and value — computed for the goal you picked, across this category's products. 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.
Start with a goal, not a brand
Browsing vitamin c supplements without a goal makes no sense — different products do different jobs, and “best” flips depending on which job you're hiring for. These are the 45 health outcomes that matter for this category. Pick yours, and the full evidence-ranked shelf loads for that goal alone.
Vitamin C statusBiochemical sufficiency of ascorbic acid.993 rankedStrong
Uric acidPurine metabolism marker associated with gout and cardiometabolic risk.959 rankedStrong
Iron statusOverall iron sufficiency and availability.979 rankedStrong
Common cold durationLength of cold episodes.999 rankedModerate-strong
Common cold incidenceFrequency of upper respiratory infections resembling the common cold.873 rankedStrong
Endothelial functionAbility of blood vessels to dilate and respond normally.955 rankedStrong
Antioxidant capacityMeasured ability to counter oxidative stress.983 rankedStrong
MicrocirculationPerfusion in small vessels and capillary beds.268 rankedModerate-strong
EdemaSwelling due to excess fluid accumulation.271 rankedStrong
Blood pressureArterial pressure; direction of benefit depends on baseline status.1k rankedStrong
Zinc statusBiochemical sufficiency of zinc.220 rankedStrong
Oxidative stress biomarkersLaboratory indicators of oxidative damage or redox imbalance.326 rankedModerate-strong
Bone mineral densityMeasure of bone strength and mineralization.427 rankedStrong
Acne severityExtent or intensity of acne lesions.245 rankedModerate-strong
Urine pHAcidity or alkalinity of urine.82 rankedStrongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best vitamin c supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 1.1k products against that goal's trials.