Best Slow Release Iron Supplements Updated May 2025

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Best Slow Release Iron Supplements
2025 Buyer's GuideUpdated May 2025
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10.0

1

10.0

Vykee Nutrition Iron Supplement – 36mg Iron (as Bisglycinate) | High Absorption, Gentle On Stomachs | Vegan, Non-GMO | Supports...
Stomach comfort
Ease of use
Energy level
Length of supply
Value for money
Effectiveness

10.0

1
Vykee Nutrition Iron Supplement – 36mg Iron (as Bisglycinate) | High Absorption, Gentle On Stomachs | Vegan, Non-GMO | Supports...
Stomach comfort
Ease of use
Energy level
Length of supply
Value for money
Effectiveness

9.9

2

9.9

21st Century Slow Release Iron Tablets, 60 Count
Value for money
Stomach issues
Iron content
Works well
Quality
Ease of swallow

9.9

2
21st Century Slow Release Iron Tablets, 60 Count
Value for money
Stomach issues
Iron content
Works well
Quality
Ease of swallow

9.8

3

9.8

Doctor's Recipes Iron Supplement 65 mg with Vitamin C - Maximized Absorption, Stomach Friendly & High Potency Iron Pills for Re...
Stomach comfort
Vitamin c
Effectiveness
Energy level
Value for money
Size

9.8

3
Doctor's Recipes Iron Supplement 65 mg with Vitamin C - Maximized Absorption, Stomach Friendly & High Potency Iron Pills for Re...
Stomach comfort
Vitamin c
Effectiveness
Energy level
Value for money
Size

9.7

4

9.7

Iron Supplement for Women - Iron 65mg (Ferrous Sulfate 325mg) - Stomach Friendly | Slow Release Iron | High Absorption - Vitami...
Effectiveness
Iron content
Energy level
Taste

9.7

4
Iron Supplement for Women - Iron 65mg (Ferrous Sulfate 325mg) - Stomach Friendly | Slow Release Iron | High Absorption - Vitami...
Effectiveness
Iron content
Energy level
Taste

9.5

5

9.5

Vitacook Iron Supplement for Women Men, High Potency Iron 65mg with Vitamin C 250mg, Slow Release Stomach Friendly Iron Pills f...
Iron content
Digestibility
Size
Taste
Vitamin c
Value for money

9.5

5
Vitacook Iron Supplement for Women Men, High Potency Iron 65mg with Vitamin C 250mg, Slow Release Stomach Friendly Iron Pills f...
Iron content
Digestibility
Size
Taste
Vitamin c
Value for money

9.4

6

9.4

MegaFood Blood Builder Minis, Iron Supplement Clinically Shown to Increase Iron Levels Without Side Effects - Vegan Supplement ...
Iron content
Product quality
Ease of swallowing
Energy level
Pill size
Iron levels

9.4

6
MegaFood Blood Builder Minis, Iron Supplement Clinically Shown to Increase Iron Levels Without Side Effects - Vegan Supplement ...
Iron content
Product quality
Ease of swallowing
Energy level
Pill size
Iron levels

9.3

7

9.3

THORNE Iron Bisglycinate - 25 mg Iron Supplement for Enhanced Absorption Without Gastrointestinal Side Effects* - NSF Certified...
Effectiveness
Quality
Ease of digestion
Functionality
Energy level
Taste

9.3

7
THORNE Iron Bisglycinate - 25 mg Iron Supplement for Enhanced Absorption Without Gastrointestinal Side Effects* - NSF Certified...
Effectiveness
Quality
Ease of digestion
Functionality
Energy level
Taste

9.2

8

9.2

Slow Fe 45mg Iron Supplement for Iron Deficiency, Slow Release, High Potency, Easy to Swallow Tablets - 60 Count
Stomach upset
Works well
Value for money
Iron content
Ease of swallowing
Release rate

9.2

8
Slow Fe 45mg Iron Supplement for Iron Deficiency, Slow Release, High Potency, Easy to Swallow Tablets - 60 Count
Stomach upset
Works well
Value for money
Iron content
Ease of swallowing
Release rate

9.0

9

9.0

Solgar Gentle Iron - Ideal for Sensitive StomachsRed Blood Cell Supplement, , Non Constipating & GMO, Vegan, Gluten & Dairy Fre...
Stomach ease
Iron levels
Effectiveness
Gentleness
Energy level
Quality

9.0

9
Solgar Gentle Iron - Ideal for Sensitive StomachsRed Blood Cell Supplement, , Non Constipating & GMO, Vegan, Gluten & Dairy Fre...
Stomach ease
Iron levels
Effectiveness
Gentleness
Energy level
Quality

8.9

10

8.9

Carlyle Slow Release Iron 45 mg | 180 Tablets | Ferrous Sulfate Mineral Supplement | for Men & Women | Vegetarian, Non-GMO, and...
Value for money
Stomach sensitivity
Ease of swallow
Effectiveness
Iron content
Quality

8.9

10
Carlyle Slow Release Iron 45 mg | 180 Tablets | Ferrous Sulfate Mineral Supplement | for Men & Women | Vegetarian, Non-GMO, and...
Value for money
Stomach sensitivity
Ease of swallow
Effectiveness
Iron content
Quality

Our Top Choice

10.0

1

10.0

Vykee Nutrition Iron Supplement – 36mg Iron (as Bisglycinate) | High Absorption, Gentle On Stomachs | Vegan, Non-GMO | Supports...
Stomach comfort
Ease of use
Energy level
Length of supply
Value for money
Effectiveness

10.0

1
Vykee Nutrition Iron Supplement – 36mg Iron (as Bisglycinate) | High Absorption, Gentle On Stomachs | Vegan, Non-GMO | Supports...
Stomach comfort
Ease of use
Energy level
Length of supply
Value for money
Effectiveness