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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. Ferrograd Tablets 325mg
  2. Galfer Capsules 305mg
  3. Boots Iron Tablets 200mg
  4. Spatone Liquid Iron Supplement
  5. Holland Barrett Iron 14mg Tablets
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

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."

£4-8 GBP

BEST FERROUS SALT CAPSULE ALTERNATIVE

Galfer Capsules 305mg

Galfer

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

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."

£5-10 GBP

BEST BUDGET FERROUS SULFATE OPTION

Boots Iron Tablets 200mg

Boots

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

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."

£2-5 GBP

BEST NATURAL LIQUID IRON

Spatone Liquid Iron Supplement

Spatone

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

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."

£8-15 GBP

BEST LOW‑DOSE DAILY IRON

Holland Barrett Iron 14mg Tablets

Holland & Barrett

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

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."

£6-12 GBP

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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