I N C E P T I O N A I
  2. Health fitness
  3. Nutrition supplements
  4. Vitamins minerals
  5. Iron
  7. Ferrous sulfate
  8. Ferrous sulfate tablets

Best Ferrous Sulfate Tablets UK 2026 — Top 5 Iron Supplements

Published on Monday, 26 January 2026

Ferrous sulfate tablets are a convenient and effective way to supplement iron in the diet and are commonly used in the UK to treat or prevent iron deficiency anemia. Popular with people managing heavy menstrual loss, pregnancy-related needs, vegetarian or vegan diets, and general low iron levels, ferrous sulfate is favored for its high elemental iron content, wide availability and low cost. UK consumers often choose products based on strength, tolerability, dosing frequency, brand trust and format, which is why the market includes high-strength tablets, lower-dose maintenance formulas and gentler liquid options. Guidance from the NHS and UK clinicians encourages appropriate dosing and medical review, while shoppers look for clear labeling, reputable retailers such as Boots and Holland & Barrett, and options that reduce common gastrointestinal side effects.

Top Picks Summary

1. Best High‑Dose Ferrous Sulfate

2. Best Ferrous Salt Capsule Alternative

3. Best Budget Ferrous Sulfate Option

4. Best Natural Liquid Iron

5. Best Low‑Dose Daily Iron

Top Picks Summary

  1. Ferrograd Tablets 325mg
  2. Galfer Capsules 305mg
  3. Boots Iron Tablets 200mg
  4. Spatone Liquid Iron Supplement
  5. Holland Barrett Iron 14mg Tablets
1
BEST HIGH‑DOSE FERROUS SULFATE

Ferrograd Tablets 325mg

Ferrograd

Ferrograd 325mg positions itself as the high-strength ferrous sulfate option in this list, favored for delivering a larger iron salt dose per tablet which can reduce pill burden for those with moderate to severe deficiency. Compared with lower-dose options like Boots 200mg and Holland & Barrett 14mg, Ferrograd aims to be the cost-effective choice for rapid repletion, while its tablet form typically offers simpler storage and dosing than liquid alternatives such as Spatone.

4.4Rated 4.4 out of 5 stars

  • 105 mg elemental iron per tablet

  • Prolonged-release, gentler on the stomach

Review Summary

90%

"Effective at raising iron levels for many users; generally reports of good efficacy but common side effects like constipation and stomach upset are frequently mentioned."

  • One-a-day dosing

  • Each prolonged-release tablet contains 325 mg dried ferrous sulfate, equivalent to 105 mg elemental iron — a high single-tablet dose.

Enhanced Physical Well-Being

Sustained Energy & Focus

Health & Fitness Improvement

Ferrograd 325mg positions itself as the high-strength ferrous sulfate option in this list, favored for delivering a larger iron salt dose per tablet which can reduce pill burden for those with moderate to severe deficiency. Compared with lower-dose options like Boots 200mg and Holland & Barrett 14mg, Ferrograd aims to be the cost-effective choice for rapid repletion, while its tablet form typically offers simpler storage and dosing than liquid alternatives such as Spatone.

  • 105 mg elemental iron per tablet

  • Prolonged-release, gentler on the stomach

  • One-a-day dosing

  • Each prolonged-release tablet contains 325 mg dried ferrous sulfate, equivalent to 105 mg elemental iron — a high single-tablet dose.

  • Controlled prolonged-release core releases iron gradually over several hours to reduce gastrointestinal side effects.

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InceptionAI independently ranks and curates the best buying experience for Ferrograd Tablets 325mg in UK. We recommend this Amazon option for the easiest, most reliable purchase — not necessarily the absolute lowest price, but the best overall experience. Click to proceed to the listing, or browse alternative top picks and ranking rationale on InceptionAI.

£4-8 GBP

2
BEST FERROUS SALT CAPSULE ALTERNATIVE

Galfer Capsules 305mg

Galfer
Local Product

Galfer 305mg capsules are a ferrous fumarate iron supplement — a different iron salt to the ferrous sulfate in Ferrograd or Boots — providing about 100 mg of elemental iron per capsule. The capsule format can be easier to swallow than coated tablets, and Galfer is a common, reasonably priced choice for treating iron deficiency where a higher single-dose iron supplement is wanted over low-dose maintenance products like Holland & Barrett 14mg.

4.1Rated 4.1 out of 5 stars

  • Gentle-release — tummy calm

  • Capsule ease — pop-and-go

  • Local Product

Review Summary

87%

"Users find Galfer effective and reasonably priced, with many saying it improves iron markers; typical downsides are gastrointestinal discomfort and dark stools for some people."

  • Steady uptake — slow burn

  • Each capsule contains 305 mg ferrous fumarate, equivalent to about 100 mg elemental iron — a high therapeutic dose.

Enhanced Physical Well-Being

Sustained Energy & Focus

Time-Saving Convenience

Galfer 305mg capsules are a ferrous fumarate iron supplement — a different iron salt to the ferrous sulfate in Ferrograd or Boots — providing about 100 mg of elemental iron per capsule. The capsule format can be easier to swallow than coated tablets, and Galfer is a common, reasonably priced choice for treating iron deficiency where a higher single-dose iron supplement is wanted over low-dose maintenance products like Holland & Barrett 14mg.

  • Gentle-release — tummy calm

  • Capsule ease — pop-and-go

  • Steady uptake — slow burn

  • Each capsule contains 305 mg ferrous fumarate, equivalent to about 100 mg elemental iron — a high therapeutic dose.

  • Uses ferrous fumarate rather than ferrous sulfate; both are well-absorbed oral iron salts used for iron deficiency.

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InceptionAI independently ranks and curates the best buying experience for Galfer Capsules 305mg in UK. We recommend this Amazon option for the easiest, most reliable purchase — not necessarily the absolute lowest price, but the best overall experience. Click to proceed to the listing, or browse alternative top picks and ranking rationale on InceptionAI.

£5-10 GBP

3
BEST BUDGET FERROUS SULFATE OPTION

Boots Iron Tablets 200mg

Boots
Local Product

Boots Iron 200mg is the mainstream high-street, value-oriented choice that trades off peak potency for broad availability and affordability, making it a practical first-line option for many consumers. Compared with premium or specialty items (Ferrograd and Galfer), Boots combines retail convenience and competitive pricing, while it sits above low-dose maintenance supplements and offers a simpler alternative to liquid products like Spatone for those who prefer tablets.

4Rated 4 out of 5 stars

  • Moderate dose — starter aid

  • Budget-friendly — savvy pick

  • Local Product

Review Summary

85%

"Seen as good value and suitable for mild deficiency or maintenance, with generally tolerable side effects, though it may act slower than higher-dose formulations for severe anemia."

  • Daily steady — easy habit

  • Boots own‑brand tablets supply a 200 mg iron salt dose suitable for mild to moderate replacement.

Enhanced Physical Well-Being

Sustained Energy & Focus

Boots Iron 200mg is the mainstream high-street, value-oriented choice that trades off peak potency for broad availability and affordability, making it a practical first-line option for many consumers. Compared with premium or specialty items (Ferrograd and Galfer), Boots combines retail convenience and competitive pricing, while it sits above low-dose maintenance supplements and offers a simpler alternative to liquid products like Spatone for those who prefer tablets.

  • Moderate dose — starter aid

  • Budget-friendly — savvy pick

  • Daily steady — easy habit

  • Boots own‑brand tablets supply a 200 mg iron salt dose suitable for mild to moderate replacement.

  • Very cost‑effective and widely available in stores and online across the UK.

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InceptionAI independently ranks and curates the best buying experience for Boots Iron Tablets 200mg in UK. We recommend this Amazon option for the easiest, most reliable purchase — not necessarily the absolute lowest price, but the best overall experience. Click to proceed to the listing, or browse alternative top picks and ranking rationale on InceptionAI.

£2-5 GBP

4
BEST NATURAL LIQUID IRON

Spatone Liquid Iron Supplement

Spatone
Local Product

Spatone offers a liquid natural iron concentrate rather than a ferrous sulfate tablet, and it is included here as the gentler, better-tolerated alternative for people who experience gastrointestinal side effects from ferrous salts. While Spatone typically provides lower elemental iron per dose and commands a higher per-serving price than tablet-form ferrous sulfate brands, its technical advantage is tolerability and suitability for sensitive users or those who prefer single-dose liquid administration.

4.3Rated 4.3 out of 5 stars

  • Natural liquid — stream fresh

  • Gentle sip — stomach-kind

  • Local Product

Review Summary

92%

"Praised for being gentle on the stomach and causing fewer side effects, many users like it for long-term use and easy dosing, but some note it is pricier and may be less potent for severe deficiency."

  • Sachet travel — grab-go

  • Natural iron‑rich liquid in single‑serve sachets delivering a low elemental iron dose per serving.

Enhanced Physical Well-Being

Eco-Friendly Living

Reduced Stress & Anxiety

Spatone offers a liquid natural iron concentrate rather than a ferrous sulfate tablet, and it is included here as the gentler, better-tolerated alternative for people who experience gastrointestinal side effects from ferrous salts. While Spatone typically provides lower elemental iron per dose and commands a higher per-serving price than tablet-form ferrous sulfate brands, its technical advantage is tolerability and suitability for sensitive users or those who prefer single-dose liquid administration.

  • Natural liquid — stream fresh

  • Gentle sip — stomach-kind

  • Sachet travel — grab-go

  • Natural iron‑rich liquid in single‑serve sachets delivering a low elemental iron dose per serving.

  • Typically reported to be gentler on the stomach with fewer side effects than many tablets.

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InceptionAI independently ranks and curates the best buying experience for Spatone Liquid Iron Supplement in UK. We recommend this Amazon option for the easiest, most reliable purchase — not necessarily the absolute lowest price, but the best overall experience. Click to proceed to the listing, or browse alternative top picks and ranking rationale on InceptionAI.

£8-15 GBP

5
BEST LOW‑DOSE DAILY IRON

Holland Barrett Iron 14mg Tablets

Holland & Barrett
Local Product

Holland & Barrett 14mg tablets are positioned as a low-dose, maintenance-focused iron supplement aimed at daily prevention or mild deficiency management, offering an economical option for long-term use. Compared with high-strength therapeutic products like Ferrograd or Galfer, this product reduces risk of gastrointestinal intolerance and is financially attractive for routine supplementation, though it is not intended for rapid repletion where higher-dose ferrous sulfate tablets would be more effective.

4Rated 4 out of 5 stars

  • Low-dose daily — gentle nudge

  • Plant-friendly — veggie ally

  • Local Product

Review Summary

86%

"Popular as a low-dose daily supplement with good tolerability and value; users report it helps maintain iron levels but is often insufficient alone for treating significant anemia."

  • Lifestyle brand — shelf smart

  • Provides a lower 14 mg elemental iron dose per tablet suitable for daily maintenance.

Enhanced Physical Well-Being

Health & Fitness Improvement

Aesthetic & Personal Appeal

Holland & Barrett 14mg tablets are positioned as a low-dose, maintenance-focused iron supplement aimed at daily prevention or mild deficiency management, offering an economical option for long-term use. Compared with high-strength therapeutic products like Ferrograd or Galfer, this product reduces risk of gastrointestinal intolerance and is financially attractive for routine supplementation, though it is not intended for rapid repletion where higher-dose ferrous sulfate tablets would be more effective.

  • Low-dose daily — gentle nudge

  • Plant-friendly — veggie ally

  • Lifestyle brand — shelf smart

  • Provides a lower 14 mg elemental iron dose per tablet suitable for daily maintenance.

  • Often sold in formulations that include vitamin C to aid iron absorption—check the label.

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InceptionAI independently ranks and curates the best buying experience for Holland Barrett Iron 14mg Tablets in UK. We recommend this Amazon option for the easiest, most reliable purchase — not necessarily the absolute lowest price, but the best overall experience. Click to proceed to the listing, or browse alternative top picks and ranking rationale on InceptionAI.

£6-12 GBP

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Frequently Asked Questions

Which ferrous sulfate tablet is best for severe iron deficiency?

Ferrograd Tablets 325mg are the most suitable choice for moderate to severe deficiency because they deliver a high dose of 105 mg of elemental iron per tablet.

How much elemental iron is in a Ferrograd 325mg tablet?

Each Ferrograd 325mg tablet contains 325 mg of dried ferrous sulfate, which provides exactly 105 mg of elemental iron.

Are Boots Iron Tablets 200mg cheaper than Ferrograd or Galfer?

Boots Iron Tablets 200mg are the most budget-friendly option, offering a cost-effective, single-ingredient formulation for those managing mild to moderate iron replacement.

Can children under 12 take Ferrograd 325mg tablets?

Ferrograd 325mg tablets are not recommended for children under 12 years of age according to the product marketing authorisation.

Conclusion

This selection highlights five approachable options widely available in the UK: Ferrograd Tablets 325mg, Galfer Capsules 305mg, Boots Iron Tablets 200mg, Spatone Liquid Iron Supplement and Holland & Barrett Iron 14mg Tablets. For most people seeking a strong, cost-effective treatment to correct iron deficiency quickly, Ferrograd Tablets 325mg stands out as the best overall choice on this page, while Spatone is a gentler liquid option and Holland & Barrett Iron 14mg works well for ongoing maintenance. We hope you found what you were looking for. If you want to refine by strength, format or retailer, or expand your search to alternatives, use the search to filter results or read product pages for detailed dosing and safety information.

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