Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets vs Thorne, Advanced Iron Complex, 60 Capsules
Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets (#4) vs Thorne, Advanced Iron Complex, 60 Capsules (#5): in our Gentle Iron Supplements scoring the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets totals 6.9/10 and the Thorne, Advanced Iron Complex, 60 Capsules 6.3/10.
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Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets
$9.99Check price at iHerbRead full review
TopsFive comparison scores
Side by side
| Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets | Thorne, Advanced Iron Complex, 60 Capsules | |
|---|---|---|
| Price | $9.99 | $26 |
| Iron Form | Ferrochel ferrous bisglycinate chelate | Ferrochel ferrous bisglycinate chelate |
| Elemental Iron | 27 mg | 36 mg |
| Vitamin C | None | 15 mg as ascorbic acid |
| Serving Size | 1 tablet | 1 capsule |
| Servings Per Container | 120 | 60 |
| Other Active Ingredients | None | Vitamin B6 5 mg P-5-P; folate 667 mcg DFE as L-5-MTHF; vitamin B12 300 mcg as methylcobalamin |
| Other Ingredients | Microcrystalline cellulose, croscarmellose sodium, water/hypromellose/hydroxypropyl cellulose/glycerin coating, magnesium stearate, silicon dioxide | Hypromellose capsule, microcrystalline cellulose, leucine, silicon dioxide |
| Testing / Certification | No listed USP, NSF or public product-specific certificate of analysis | No listed USP, NSF or public product-specific certificate of analysis |
How they differ in real use
Built from our gentle iron supplements scoring, each product's published specifications, and verified owner feedback — not hands-on testing.
Both the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets and the Thorne, Advanced Iron Complex, 60 Capsules made our Top 5 Gentle Iron Supplements, at #4 and #5. It is the strongest raw-value option after California Gold and uses the preferred form, but absent product-specific certification and a longer excipient list leave it narrowly behind Solgar. Solgar's much larger review base breaks that close quality tie. The cofactor formula is the most comprehensive and its 5,000+ recent sales show strong demand, but the fixed scoring penalizes its lack of product-specific external certification and the list's highest active-ingredient cost. Popularity cannot outweigh those heavier criteria.
We score gentle iron supplements on Third-Party Testing (30%), Form & Bioavailability (25%), Dose vs Research (20%), Label Transparency (15%) and Value (10%). On that basis the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets totals 6.9 out of 10 and the Thorne, Advanced Iron Complex, 60 Capsules 6.3. The widest gap is Value, where the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets scores 10 against 3 for the Thorne, Advanced Iron Complex, 60 Capsules — cost per unit of active ingredient. Label Transparency also separates them: 10 for the Thorne, Advanced Iron Complex, 60 Capsules versus 8 for the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets.
On paper, the specifications that actually differ: Elemental Iron — 27 mg on the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets versus 36 mg on the Thorne, Advanced Iron Complex, 60 Capsules; Vitamin C — None on the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets versus 15 mg as ascorbic acid on the Thorne, Advanced Iron Complex, 60 Capsules; Serving Size — 1 tablet on the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets versus 1 capsule on the Thorne, Advanced Iron Complex, 60 Capsules; Servings Per Container — 120 on the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets versus 60 on the Thorne, Advanced Iron Complex, 60 Capsules; Other Active Ingredients — None on the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets versus Vitamin B6 5 mg P-5-P; folate 667 mcg DFE as L-5-MTHF; vitamin B12 300 mcg as methylcobalamin on the Thorne, Advanced Iron Complex, 60 Capsules; Other Ingredients — Microcrystalline cellulose, croscarmellose sodium, water/hypromellose/hydroxypropyl cellulose/glycerin coating, magnesium stearate, silicon dioxide on the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets versus Hypromellose capsule, microcrystalline cellulose, leucine, silicon dioxide on the Thorne, Advanced Iron Complex, 60 Capsules. They match on Iron Form and Testing / Certification.
Pricing as of August 5, 2026: $9.99 for the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets and $26 for the Thorne, Advanced Iron Complex, 60 Capsules, a $16.01 difference in the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets's favor. Owners praise the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets for 27 mg elemental iron as Ferrochel ferrous bisglycinate chelate and $9.99 for 120 servings, the lowest rounded cost per serving in the list; the most common complaint is no vitamin C appears on the Supplement Facts panel. Owners praise the Thorne, Advanced Iron Complex, 60 Capsules for 36 mg elemental iron as Ferrochel ferrous bisglycinate chelate and includes 15 mg vitamin C plus disclosed active forms of vitamin B6, folate and vitamin B12; the most common complaint is no USP, NSF or public product-specific certificate of analysis is shown for this product.
Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets
- 27 mg elemental iron as Ferrochel ferrous bisglycinate chelate
- $9.99 for 120 servings, the lowest rounded cost per serving in the list
- Label identifies the product as vegan, non-GMO, gluten-free and soy-free
- No vitamin C appears on the Supplement Facts panel
- The tablet uses microcrystalline cellulose, croscarmellose sodium, a multi-ingredient coating, magnesium stearate and silicon dioxide
Thorne, Advanced Iron Complex, 60 Capsules
- 36 mg elemental iron as Ferrochel ferrous bisglycinate chelate
- Includes 15 mg vitamin C plus disclosed active forms of vitamin B6, folate and vitamin B12
- No proprietary blend; every active amount is stated
- No USP, NSF or public product-specific certificate of analysis is shown for this product
- $0.43 per serving and about $0.0120 per mg of elemental iron are the highest costs in the list
Which should you buy?
The Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets is the better fit for buyers prioritizing the lowest cost per serving and buyers preferring a one-tablet 27 mg dose — it is the higher-scoring pick here, chiefly for Value and Dose vs Research. The Thorne, Advanced Iron Complex, 60 Capsules is the better fit for buyers wanting vitamin C and B-vitamin cofactors in one capsule and buyers preferring methylfolate and methylcobalamin forms, and the stronger choice if Label Transparency matters more to you than the overall score. Since the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets is both the higher scorer and $16.01 cheaper, the Thorne, Advanced Iron Complex, 60 Capsules only makes sense for buyers wanting vitamin C and B-vitamin cofactors in one capsule. The Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets is a poor fit for buyers avoiding tablets with multiple excipients; the Thorne, Advanced Iron Complex, 60 Capsules is a poor fit for budget-focused shoppers.
Choose the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets if
- Buyers prioritizing the lowest cost per serving
- Buyers preferring a one-tablet 27 mg dose
Skip it if
- Buyers avoiding tablets with multiple excipients
- Buyers requiring a public product-specific certificate of analysis
Choose the Thorne, Advanced Iron Complex, 60 Capsules if
- Buyers wanting vitamin C and B-vitamin cofactors in one capsule
- Buyers preferring methylfolate and methylcobalamin forms
Skip it if
- Budget-focused shoppers
- Buyers wanting a single-active iron formula
Common questions
Is the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets better than the Thorne, Advanced Iron Complex, 60 Capsules?
In our Gentle Iron Supplements ranking the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets scores higher overall, 6.9 to 6.3, with the biggest advantage in Value. The Thorne, Advanced Iron Complex, 60 Capsules is stronger on Label Transparency, so it is the better pick if that matters most to you.
How much more does the Thorne, Advanced Iron Complex, 60 Capsules cost than the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets?
$16.01 more as of August 5, 2026: $26 for the Thorne, Advanced Iron Complex, 60 Capsules against $9.99 for the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets. Prices move, so the merchant page shows the current figure.
What is the main difference between the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets and the Thorne, Advanced Iron Complex, 60 Capsules?
The headline spec difference is Elemental Iron: 27 mg on the Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets versus 36 mg on the Thorne, Advanced Iron Complex, 60 Capsules. In use, the gap that matters most is Value (10 vs 3 in our scoring): cost per unit of active ingredient.