Everything DoseRank tracks on the protein bars shelf — Iron. The category itself is never ranked: 115 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 protein bars 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.
FerritinMarker of iron stores.33 rankedStrong
HemoglobinBlood oxygen-carrying protein concentration.33 rankedStrong
Kidney stone riskLikelihood of nephrolithiasis formation or recurrence.50 rankedModerate-strong
Lean body massNon-fat body mass, often used as a marker of preserved musculature.40 rankedStrong
Pregnancy complicationsAdverse maternal or fetal events during pregnancy.34 rankedStrong
Muscle massQuantity of skeletal muscle tissue.46 rankedStrong
Muscle weaknessReduced ability to generate force.30 rankedModerate-strong
Anemia statusPresence of clinically meaningful low red cell mass or hemoglobin.40 rankedStrong
Vitamin E statusBiochemical sufficiency of tocopherols/tocotrienols.53 rankedStrong
Gamma-glutamyl transferase (GGT)Marker of cholestasis, alcohol exposure, or hepatic stress.1 rankedModerate-strong
StrokeCerebrovascular event causing neurologic injury.35 rankedStrong
Sodium statusBody sodium balance.38 rankedStrong
Omega-3 indexRed blood cell EPA+DHA content reflecting omega-3 status.12 rankedStrong
Hydration statusAdequacy of body water and fluid balance.38 rankedStrong
Potassium statusBody potassium balance.33 rankedStrongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best protein bars supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 115 products against that goal's trials.