Vitamin B1 (Thiamin) 100mg, 90 capsules
£7.50 for 90 capsules at Lamberts Healthcare (Nature's Best). That works out at 8p per 100 mg, which ranks it 1st of the 2 thiamine (vitamin B1) products we price across 2 UK retailers.
At one 100 mg dose a day, this pack lasts 3 months. A month is 30 days, so twelve of them is not quite a year.
How we worked it out
- Servings: 90 ÷ 1 per serving = 90
- In the pack: 90 × 100 mg = 9 g
- £7.50 ÷ 9 g × 100 mg = 8.33p per 100 mg
- A week 8.33p × 7 = 58p · a month × 30 = £2.50 · a year × 365 = £30.42
- 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: thiamine (vitamin B1)
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Ranked purely by price per 100 mg. 208 combination products also contain thiamine (vitamin B1).
On the label
- Thiamine (vitamin B1) · Thiamine
- 100 mg per serving (stated on the label)
- Pack
- 90 capsules · 90 servings · 1 capsule(s) a serving
- Cost per serving
- 8p (90 servings in the pack)
More label details
- Claimed on the listing
- vegan, vegetarian
- Barcode
- 5055148401764
- Sold by
- Lamberts Healthcare (Nature's Best)
- What the listing says
- “Specifications: 90 Capsules” · “provide a full 100mg of highly absorbable pure nutrition grade vitamin B1”
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One 100 mg dose is our comparison unit, not a recommendation.
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Filled in from the label’s serving: 1 capsule.
What you paid
Optional. At Lamberts Healthcare today: £7.50.
“Order by” allows 4 working days’ delivery from Lamberts Healthcare and your spare days.
Price history
No price change since 21 September 2026. Checked on 27 days, most recently 20 October 2026.
- Price at every check
- £7.50Lamberts Healthcare (Nature's Best)
- First recorded
- £7.5021 Sept
- Checked on
- 27 dayssince 21 Sept
- First checked at Lamberts Healthcare (Nature's Best): £7.50
Questions about this product
How much does Nature's Best Vitamin B1 (Thiamin) 100mg cost per 100 mg?
8p per 100 mg, from £7.50 for 90 capsules at Lamberts Healthcare (Nature's Best), checked on 20 October 2026.
Is it the cheapest thiamine (vitamin B1) in the UK?
Yes. Of the 2 we price across 2 UK retailers, this is the cheapest per 100 mg.
How long does one pack last?
3 months at one 100 mg dose. The pack holds 9 g in total.
About Nature's Best
Founded 1981 · Tunbridge Wells, England · Part of Procter & Gamble
Nature's Best is a vitamins and supplements brand based in Tunbridge Wells, Kent, that has sold direct to the public since 1981. It is a trading name of Lamberts Healthcare Ltd, which also supplies practitioners and pharmacists under the Lamberts name.
All 136 Nature's Best products, priced per doseVisit Nature's Best (opens in a new tab)
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