Lugol's Iodine, 50 ml
£22.49 for 50 ml at Healf. That works out at under 1p per 150 µg iodine, which ranks it 1st of the 8 potassium iodide products we price across 3 UK retailers.
At one 150 µg dose a day, this pack lasts 102.7 years. A month is 30 days, so twelve of them is not quite a year.
How we worked it out
- In the pack: 450 × 12.5 mg = 5,625 mg
- £22.49 ÷ 5,625 mg × 150 µg = 0.06p per 150 µg iodine
- A week 0.06p × 7 = under 1p · a month × 30 = 2p · a year × 365 = 22p
- Amount per serving: stated on the label.
The standard dose is a comparison unit, not a recommendation. Always confirm the price on the retailer's site. How we compare everything.
How it compares: potassium iodide
All 8, ranked →
Ranked purely by price per 150 µg iodine. 89 combination products also contain iodine.
On the label
- Iodine · Potassium iodide
- 12.5 mg per serving (stated on the label)
- Pack
- 50 ml · 450 servings
- Cost per serving
- 5p (450 servings in the pack)
More label details
- Sold by
- Healf
- What the listing says
- “50ml” · “Servings per container: 450” · “Iodine ; 12.5mg ; 8333%” · “Potassium Iodide ; 25mg”
Ingredients
Iodine, potassium iodide, and distilled water.
From the Healf listing. Check the pack itself if you have an allergy: labels mark allergens in bold.
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One 150 µg dose is our comparison unit, not a recommendation.
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What you paid
Optional. At Healf today: £22.49.
“Order by” allows 3 working days’ delivery from Healf and your spare days.
Price history
No price change since 1 October 2026. Checked on 20 days, most recently 20 October 2026.
- Price at every check
- £22.49Healf
- First recorded
- £22.491 Oct
- Checked on
- 20 dayssince 1 Oct
- First checked at Healf: £22.49
Questions about this product
How much does Ancient Purity Lugol's Iodine cost per 150 µg iodine?
under 1p per 150 µg iodine, from £22.49 for 50 ml at Healf, checked on 20 October 2026.
Is it the cheapest potassium iodide in the UK?
Yes. Of the 8 we price across 3 UK retailers, this is the cheapest per 150 µg iodine.
How long does one pack last?
102.7 years at one 150 µg dose. The pack holds 5,625 mg in total.
