Iodine Tablets
£9.99 for 365 servings at WeightWorld. That works out at 1p per 150 µg iodine, which ranks it 2nd of the 8 potassium iodide products we price across 3 UK retailers.
At one 150 µg dose a day, this pack lasts 2.7 years. A month is 30 days, so twelve of them is not quite a year.
How we worked it out
- In the pack: 365 × 400 µg = 146 mg
- £9.99 ÷ 146 mg × 150 µg = 1.03p per 150 µg iodine
- A week 1.03p × 7 = 7p · a month × 30 = 31p · a year × 365 = £3.75
- 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.
Cheaper potassium iodide
All 8, ranked →
Switching to the Healf pack saves 29p a month at the same 150 µg dose.
Ranked purely by price per 150 µg iodine. 89 combination products also contain iodine.
On the label
- Iodine · Potassium iodide
- 400 µg per serving (stated on the label)
- Pack
- 365 servings · 1 tablet(s) a serving
- Cost per serving
- 3p (365 servings in the pack)
More label details
- Sold by
- WeightWorld
- What the listing says
- “Servings per Container: 365” · “Serving Size: 1 Tablet” · “Iodine (as Potassium Iodide) ; 400 mcg”
Ingredients
Bulking Agents: Microcrystalline Cellulose and Dicalcium Phosphate, Silicon Dioxide (Anti-Caking Agent) Advice Do not exceed the recommended daily dose. Food supplements must not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Discontinue use if any adverse reactions occur. Not intended for use by persons under the age of 18.
From the WeightWorld 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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Filled in from the label’s serving: 1 tablet.
What you paid
Optional. At WeightWorld today: £9.99.
“Order by” allows 3 working days’ delivery from WeightWorld and your spare days.
Price history
No price change since 9 October 2026. Checked on 1 day, most recently 9 October 2026.
- Price at every check
- £9.99WeightWorld
- First recorded
- £9.999 Oct
- Checked on
- 1 daysince 9 Oct
Checked once so far, on 9 October 2026.
- First checked at WeightWorld: £9.99
Questions about this product
How much does WeightWorld Iodine Tablets cost per 150 µg iodine?
1p per 150 µg iodine, from £9.99 for 365 servings at WeightWorld, checked on 9 October 2026.
Is it the cheapest potassium iodide in the UK?
No, it is 2nd of 8. Lugol's Iodine at Healf works out at under 1p per 150 µg iodine.
How long does one pack last?
2.7 years at one 150 µg dose. The pack holds 146 mg in total.
About WeightWorld
All 124 WeightWorld products, priced per dose
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