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Cheapest Iron (Ferrous Sulfate) on iHerb

Ranked by real cost per 100 mg of Iron (Ferrous Sulfate) — cheapest value first.

Prices updated Jul 25, 2026 · 13 products · Prices in USD

The priciest option here costs about 73.7× more per 100 mg of Iron (Ferrous Sulfate) than the best-value pick Sundance Vitamins. For the same daily dose, choosing by cost per unit instead of sticker price can meaningfully cut your yearly spend.
#ProductDoseServingsPrice (USD)Cost per 100 mg
1
Sundance Vitamins, Iron, 65 mg, 100 Coated Tablets
Sundance Vitamins, Iron, 65 mg, 100 Coated Tablets
Sundance Vitamins
65 mg1004.900.075View on iHerb →
2
Nature's Truth, Iron, 65 mg, 240 Coated Tablets
Nature's Truth, Iron, 65 mg, 240 Coated Tablets
Nature's Truth
65 mg24011.850.076View on iHerb →
3
Nature's Truth, Iron, 65 mg, 120 Coated Tablets
Nature's Truth, Iron, 65 mg, 120 Coated Tablets
Nature's Truth
65 mg1206.760.087View on iHerb →
4
Nutricost, Iron, 65 mg, 240 Tablets
Nutricost, Iron, 65 mg, 240 Tablets
Nutricost
65 mg24013.950.089View on iHerb →
5
Nature's Truth, Ultra Prenatal Multivitamin + DHA, 60 Quick Release Softgels
Nature's Truth, Ultra Prenatal Multivitamin + DHA, 60 Quick Release Softgels
Nature's Truth
27 mg9012.460.513View on iHerb →
6
Nature's Truth, High Potency Prenatal Vitamin & Mineral Formula, 60 Quick Release Capsules
Nature's Truth, High Potency Prenatal Vitamin & Mineral Formula, 60 Quick Release Capsules
Nature's Truth
27 mg609.170.566View on iHerb →
7
Nature's Truth, Ultra Prenatal Multivitamin + DHA, 120 Quick Release Softgels
Nature's Truth, Ultra Prenatal Multivitamin + DHA, 120 Quick Release Softgels
Nature's Truth
27 mg12021.870.675View on iHerb →
8
Micro Ingredients, Hair Vitamins Complex, 240 Capsules
Micro Ingredients, Hair Vitamins Complex, 240 Capsules
Micro Ingredients
10 mg12024.992.08View on iHerb →
9
Nature's Craft, Female Fertility Support, 180 Capsules
Nature's Craft, Female Fertility Support, 180 Capsules
Nature's Craft
18 mg9037.992.35View on iHerb →
10
Nature's Craft, Women's Wellness, Fertility Booster with Folate, CoQ10, & Chasteberry, 60 Capsules
Nature's Craft, Women's Wellness, Fertility Booster with Folate, CoQ10, & Chasteberry, 60 Capsules
Nature's Craft
18 mg3013.992.59View on iHerb →
11
Nature's Craft, Women's Wellness, Female Fertility Support with Folate, CoQ10, & Chasteberry, 120 Capsules
Nature's Craft, Women's Wellness, Female Fertility Support with Folate, CoQ10, & Chasteberry, 120 Capsules
Nature's Craft
18 mg6029.992.78View on iHerb →
12
Nature's Answer, Men's 100, Multivitamin, 60 Vegetarian Capsules
Nature's Answer, Men's 100, Multivitamin, 60 Vegetarian Capsules
Nature's Answer
18 mg3029.995.55View on iHerb →
13
Nature's Answer, Women's 100, Multivitamin, 60 Vegetarian Capsules
Nature's Answer, Women's 100, Multivitamin, 60 Vegetarian Capsules
Nature's Answer
18 mg3029.995.55View on iHerb →

How we rank Iron (Ferrous Sulfate)

Two supplements can list the same dose per serving yet cost very differently once you account for how many servings are in the bottle. We calculate the total nutrient in each container (dose per serving × servings per container), divide the current price by that total, and rank by the resulting cost per unit. Lower is better. Because prices are refreshed automatically, this ranking reflects today's iHerb pricing rather than a snapshot from months ago.

Cost per unit is a starting point, not the whole story — the ideal form, third-party testing, and other ingredients matter too. Always check the label and consult a healthcare professional before starting a supplement.

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Prices update automatically and may differ from iHerb at checkout. Rankings are based on cost per unit of the listed nutrient and are for informational purposes only — not medical advice. Links to iHerb are affiliate links.