Everything DoseRank tracks on the ester-c shelf — Citrus Bioflavonoids. The category itself is never ranked: 27 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 ester-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 25 health outcomes that matter for this category. Pick yours, and the full evidence-ranked shelf loads for that goal alone.
EdemaSwelling due to excess fluid accumulation.21 rankedStrong
Vitamin C statusBiochemical sufficiency of ascorbic acid.27 rankedStrong
Uric acidPurine metabolism marker associated with gout and cardiometabolic risk.26 rankedStrong
MicrocirculationPerfusion in small vessels and capillary beds.21 rankedStrong
Common cold durationLength of cold episodes.27 rankedStrong
Endothelial functionAbility of blood vessels to dilate and respond normally.23 rankedModerate-strong
Oxidative stress biomarkersLaboratory indicators of oxidative damage or redox imbalance.14 rankedModerate-strong
Antioxidant capacityMeasured ability to counter oxidative stress.27 rankedStrong
Fracture riskLikelihood of bone fracture.18 rankedStrong
Blood pressureArterial pressure; direction of benefit depends on baseline status.26 rankedModerate-strong
Night vision or dark adaptationAbility to see or adapt under low-light conditions.1 rankedStrong
Skin elasticityAbility of skin to stretch and recoil.2 rankedLimited
Acne severityExtent or intensity of acne lesions.2 rankedModerate-strong
Biotin statusBiochemical sufficiency of biotin.1 rankedStrong
Vitamin A statusBiochemical sufficiency of retinoids or carotenoid-derived vitamin A.1 rankedStrongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best ester-c supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 27 products against that goal's trials.