Everything DoseRank tracks on the immune formulas shelf — Elderberry and N-Acetyl-L-Cysteine (NAC). The category itself is never ranked: 421 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 immune formulas 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.
Respiratory symptom burdenOverall severity of breathing-related symptoms.95 rankedStrong
Zinc statusBiochemical sufficiency of zinc.169 rankedStrong
Vitamin C statusBiochemical sufficiency of ascorbic acid.212 rankedStrong
Common cold incidenceFrequency of upper respiratory infections resembling the common cold.259 rankedModerate-strong
Uric acidPurine metabolism marker associated with gout and cardiometabolic risk.212 rankedModerate-strong
Iron statusOverall iron sufficiency and availability.222 rankedStrong
Common cold durationLength of cold episodes.252 rankedStrong
Acne severityExtent or intensity of acne lesions.181 rankedModerate-strong
Kidney functionOverall renal filtration and excretory performance.39 rankedModerate-strong
Albuminuria or proteinuriaProtein leakage into urine indicating kidney damage risk.31 rankedModerate-strong
Respiratory infection durationLength of respiratory infection episodes.43 rankedStrong
Gastrointestinal infection incidenceFrequency of infectious GI illnesses.36 rankedStrong
Endothelial functionAbility of blood vessels to dilate and respond normally.220 rankedStrong
Wound healingSpeed and quality of tissue repair.170 rankedModerate-strong
Selenium statusBiochemical sufficiency of selenium.60 rankedStrongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best immune formulas supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 421 products against that goal's trials.