The short answer · Ferritin

Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets
4.8· 11,636 ratings· $0.07/serving
Ferrous Bisglycinate 27 mg — inside the studied 15-120 mg window
Of 3,083 products scored for Ferritin, Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets ranks #1 with a DoseRank score of 87. Ferrous Bisglycinate is the strongest evidence signal for this outcome.
Ferrous Bisglycinate is the strongest evidence signal for this outcome.
Strong evidence · 27 mg
Iron chelated to glycine; significantly better absorbed than sulfate with minimal constipation or nausea - the preferred form for sensitive individuals or maintenance dosing.
Strong evidence · 65 mg
The standard reference form for iron supplementation; high elemental iron content and low cost, but frequent constipation, nausea, and dark stools limit tolerability.
Questions
Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets ranks #1 for Ferritin with a DoseRank score of 87. The score blends clinical strength, evidence, dose fit, trust signals and value across 3,083 products scored for this outcome.
Ferrous Bisglycinate is the strongest evidence signal for this outcome.
Ferrous Bisglycinate at 27 mg lands inside the studied 15-120 mg window. DoseRank scores this product's dose fit at 69 out of 100.
Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets works out at $0.07 per serving. $0.07 per serving — low price tier for this outcome. The cheapest ranked pick here is $0.03 per serving.
No. Retailer links may be affiliate links, but rankings and placement are never paid. Every product is scored by the same public model, and the ranking is recomputed from the underlying product data rather than edited by hand.
Retailer links may be affiliate links. Rankings and placement are never paid.
Ferrous Bisglycinate at 27 mg lands inside the studied 15-120 mg window.
Ferrous Bisglycinate
Studied window 15-120 mg · this pick 27 mg
Strong trust signals — consistently high marks from verified buyer ratings. Each product gets a DoseRank score blending clinical strength, evidence, dose fit, trust and value. Retailer links may be affiliate links — the scoring model decides placement, never payment from a brand.
$0.07 per serving — low price tier for this outcome. The cheapest ranked pick here is $0.03 per serving.
Why not the absolute cheapest? The DoseRank score also weighs clinical strength, evidence, dose fit and trust — the very cheapest listings rarely hold up everywhere else.
Ready?
The #1 pick is $0.07 a serving.Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets — in stock at a tracked retailer.
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