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Slow Fe Slow Release Iron 45 mg
Product analysis · Slow Fe

Slow Fe Slow Release Iron 45 mg

Sulfate · Tablet

Why this score?
Testing & evidence
0/25
Ingredient/formulation quality
8/20
Value
8/20
Dose transparency
8/15
Manufacturer transparency
3/10
Label/ingredient transparency
5/10
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing transparency: 0/25
$16.99Amazon
TabletFormat
45 mgDaily dose
60 tabletsPack size
$0.28Price/day
Buy Now on Amazon Compare alternatives

We may earn a commission from qualifying purchases. This never affects our scores.

The score, explained

Our scoring methodology
Testing & evidence0/100
0 points contributed · weighting 25
Ingredient/formulation quality40/100
8 points contributed · weighting 20
Value41/100
8 points contributed · weighting 20
Dose transparency50/100
8 points contributed · weighting 15
Manufacturer transparency30/100
3 points contributed · weighting 10
Label/ingredient transparency50/100
5 points contributed · weighting 10

The score compares product data, not medical effectiveness or individual suitability. Prime and affiliate commission contribute no points.

Testing & evidence

No public evidence located

Evidence status
No public evidence located
Manufacturer statement
Not recorded
Laboratory
Not recorded
Certification body
Not recorded
Batch
Not recorded
Batch-specific report
Not established in this record
Report date
Not recorded
Evidence checked
2026-09-16 17:23:52

Dose & value

Iron form
SulfateTablet
Daily dose
45 mgelemental ironAt adult upper limit
Serving size
1 tablet daily
Pack size
60 tablets
Servings per day
1
Price per day
$0.28
Price last checked
2026-09-16 12:09:41

Daily cost uses the recorded label serving; a larger dose earns no value advantage. The label serving is not a recommendation for your personal intake.

Iron formulation details

Iron comparison form
Sulfate
Iron ingredient as disclosed
Ferrous sulfate
Elemental iron / serving (mg)
45
Elemental iron / day (mg)
45
Compound mass / serving (mg), if separately disclosed
Not disclosed
Vitamin C included (yes / no / unknown)
no
Vitamin C / serving (mg)
Not disclosed
Vitamin C / day (mg)
Not disclosed
Folate included (yes / no / unknown)
no
Folate / serving (micrograms)
Not disclosed
B12 included (yes / no / unknown)
no
B12 / serving (micrograms)
Not disclosed
Pack size as labelled
60 tablets
Recommended serving / frequency
1 tablet daily
Units or ml / serving
1
Comparison basis
Not disclosed
Label use context
deficiency / doctor-recommended
Other active ingredients
Ascorbic acid listed as preservative, not a quantified vitamin C active
Allergen statement
Not disclosed
Dietary label status
Not disclosed

Product sources & research notes

Listing and manufacturer details describe the label; they do not independently verify product claims. Check the current pack before use.

Ingredients & suitability

Excipients
Active Ingredients: ferrous sulfate USP, dibasic calcium phosphate, silicified microcrystalline cellulose, hypromellose, carbomer homopolymer, ascorbic acid (preservative), magnesium stearate, tribasic calcium phosphate, polyvinyl alcohol, polyethylene glycol, talc, titanium dioxide, FD&C red 40 lake, FD&C yellow 6 lake, FD&C blue 1 lake
Allergens
Not disclosed — check the current label
Carrier / source
Not disclosed — check the current label
Other active ingredients
Ascorbic acid listed as preservative, not a quantified vitamin C active

Manufacturer transparency

Brand
Slow Fe
Legal company
Not recorded
Manufacturing model
Not recorded
Manufacturing location
Not recorded

View the full brand profile →

What the record makes clear

  • Active amount is disclosed.
  • Daily cost can be calculated from the recorded serving.

What to keep in mind

  • Verify the current label and the batch covered by any testing report.
  • A product score cannot determine whether you need a supplement.

Explore the alternatives

Compare alternative

Thorne Iron Bisglycinate 25 mg

Why this score?
Testing & evidence
21/25
Ingredient/formulation quality
18/20
Value
9/20
Dose transparency
11/15
Manufacturer transparency
6/10
Label/ingredient transparency
5/10
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing evidence
Evidence status
Recognised certification
Manufacturer statement
Thorne product page states: "It is NSF Certified for Sport®, ensuring rigorous testing for quality and the absence of substances banned by major athletic organizations" and NSF’s own registry page for "Thorne® Iron Bisglycinate" confirms the product is certified, listing Brand: Thorne®, Product Type: Mineral, Package Size: 60, Serving Size: 1 capsule, and multiple lot numbers.
Laboratory
Not recorded
Certification body
NSF Certified for Sport®
Batch
Not recorded
Batch-specific report
Not established in this record
Report date
Not recorded
Evidence checked
2026-09-16 17:32:58
$0.27per day
$16.00per pack
View AnalysisBuy Nowon Amazon
Compare alternative

NOW Iron 18 mg

Why this score?
Testing & evidence
3/25
Ingredient/formulation quality
18/20
Value
18/20
Dose transparency
14/15
Manufacturer transparency
6/10
Label/ingredient transparency
5/10
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing evidence
Evidence status
Testing claimed
Manufacturer statement
NOW Foods’ COA portal states generally that “Strength Testing” guarantees the product contains exactly what is on the label, and that NOW uses a science-based program to test raw materials and finished products for microbial and heavy metals contaminants. However, the specific COA page I could access was for Peppermint Oil (SKU 7495), not NOW Iron 18 mg, and I did not find an independently verifiable COA or certification page for this exact product.
Laboratory
Not recorded
Certification body
Not recorded
Batch
Not recorded
Batch-specific report
Not established in this record
Report date
Not recorded
Evidence checked
2026-09-16 18:28:51
$0.08per day
$9.13per pack
View AnalysisBuy Nowon Amazon
Compare alternative

NOW Iron Complex 27 mg

Why this score?
Testing & evidence
3/25
Ingredient/formulation quality
20/20
Value
16/20
Dose transparency
11/15
Manufacturer transparency
6/10
Label/ingredient transparency
5/10
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing evidence
Evidence status
Testing claimed
Manufacturer statement
NOW Foods COA portal: “A COA confirms that the product you purchased has gone through detailed testing and adheres to its product specifications and NOW standards.”
Laboratory
Not recorded
Certification body
Not recorded
Batch
Not recorded
Batch-specific report
Not established in this record
Report date
Not recorded
Evidence checked
2026-09-16 17:34:37
$0.09per day
$8.56per pack
View AnalysisBuy Nowon Amazon