Everything DoseRank tracks on the protein blends shelf — Ferrous Bisglycinate. 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.
A category alone does not say what you want the product to do. The same category can lead on sleep for one shopper and stress for another, and the evidence behind each pick differs. Picking the medical outcome first lets DoseRank rank this category's products against that outcome's studies and doses.
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.
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.
Cost is only one input. A cheap pick can trail on the composite when it uses a weaker form, misses the studied dose, or carries a stock-risk flag — the composite also weighs evidence, dose fit and availability.
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.
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.
Start with a goal, not a brand
Browsing protein blends 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.289 rankedStrong
HemoglobinBlood oxygen-carrying protein concentration.290 rankedStrong
Pregnancy complicationsAdverse maternal or fetal events during pregnancy.279 rankedStrong
Potassium statusBody potassium balance.285 rankedStrong
Infection durationLength of infectious illness episodes.120 rankedModerate-strong
Kidney stone riskLikelihood of nephrolithiasis formation or recurrence.322 rankedModerate-strong
Hepatotoxicity or liver injuryClinically important harmful effect on the liver.196 rankedModerate-strong
Infection incidenceOverall rate of infectious illness.125 rankedStrong
StrokeCerebrovascular event causing neurologic injury.293 rankedStrong
Sarcopenia statusPresence of low muscle mass and function.118 rankedStrong
Phosphate statusBiochemical phosphate balance.75 rankedStrong
AlertnessWakefulness and readiness to respond.119 rankedStrong
Coagulation statusOverall blood clotting tendency.60 rankedStrong
Muscle massQuantity of skeletal muscle tissue.120 rankedStrong
Nitric oxide bioavailabilityAvailability of nitric oxide relevant to vascular function.135 rankedStrongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best protein blends 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.