L-Theanine 200mg 60 Capsules
£13.99 for 60 capsules at Holland & Barrett. That works out at 23p per 200 mg, which ranks it 4th of the 12 L-theanine products we price across 4 UK retailers.
At one 200 mg dose a day, this pack lasts 2 months. A month is 30 days, so twelve of them is not quite a year.
How we worked it out
L-Theanine
- Servings: 60 ÷ 1 per serving = 60
- In the pack: 60 × 200 mg = 12 g
- £13.99 ÷ 12 g × 200 mg = 23.3p per 200 mg
- A week 23.3p × 7 = £1.63 · a month × 30 = £7.00 · a year × 365 = £85.11
- Amount per serving: stated on the label.
Green tea extract
- Servings: 60 ÷ 1 per serving = 60
- In the pack: 60 × 15 mg = 900 mg
- £13.99 ÷ 900 mg × 400 mg = £6.22 per 400 mg
- A week £6.22 × 7 = £43.52 · a month × 30 = £186.53 · a year × 365 = £2269.49
- Amount per serving: active constituent content stated on the label (or its stated percentage of the extract).
The standard dose is a comparison unit, not a recommendation. Always confirm the price on the retailer's site. How we compare everything.
Cheaper L-theanine
All 12, ranked →
Cheapest anywhere: 14p per 200 mg at Healf, £2.87 a month less than this one at the same 200 mg dose.
Ranked purely by price per 200 mg. 70 combination products also contain L-Theanine.
How it compares: green tea extract
All 6, ranked →
Ranked purely by price per 400 mg. 22 combination products also contain green tea extract.
On the label
- L-Theanine · L-theanine
- 200 mg per serving (stated on the label)
- Green tea extract · Green tea extract (by EGCG)
- 15 mg per serving (active constituent content stated on the label (or its stated percentage of the extract))
- Pack
- 60 capsules · 60 servings · 1 capsule(s) a serving
- Cost per serving
- 23p (60 servings in the pack)
More label details
- Sold by
- Holland & Barrett
- What the listing says
- “60 Capsules” · “Each 1 Capsule(s) contains” · “15mg EGCG from green tea extract” · “Green Tea Extract (Camellia Sinensis, Leaf) (50:1 extract, equivalent to 25000.00mg Green Tea) ; 500mg” · “Equivalent to 25,000mg green tea leaf”
Ingredients
Green Tea Extract (Camellia sinensis, Leaf), Capsule Shell (Hydroxypropyl Methylcellulose), Bulking Agent (Microcrystalline Cellulose), Anti-Caking Agents (Silicon Dioxide, Magnesium Stearate).
From the Holland & Barrett listing. Check the pack itself if you have an allergy: labels mark allergens in bold.
Price alert
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One 200 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 Holland & Barrett today: £13.99.
Bought it? We email you once, on , the day to reorder by, so it does not run out. No stack needed.
“Order by” allows 3 working days’ delivery from Holland & Barrett and your spare days.
Price history
No price change since 17 September 2026. Checked on 3 days, most recently 22 October 2026.
- Price at every check
- £13.99Holland & Barrett
- First recorded
- £13.9917 Sept
- Checked on
- 3 dayssince 17 Sept
- First checked at Holland & Barrett: £13.99
Questions about this product
How much does Holland & Barrett L-Theanine 200mg 60 Capsules cost per 400 mg?
£6.22 per 400 mg, from £13.99 for 60 capsules at Holland & Barrett, checked on 22 October 2026.
How long does one pack last?
2 days at one 400 mg dose. The pack holds 900 mg in total.
How much does Holland & Barrett L-Theanine 200mg 60 Capsules cost per 200 mg?
23p per 200 mg, from £13.99 for 60 capsules at Holland & Barrett, checked on 22 October 2026.
Is it the cheapest L-theanine in the UK?
No, it is 4th of 12. L-Theanine at Healf works out at 14p per 200 mg.
How long does one pack last?
2 months at one 200 mg dose. The pack holds 12 g in total.
About Holland & Barrett
Founded 1870 · Nuneaton, England · Part of L1 Retail (LetterOne)
Holland & Barrett is a health and wellness retailer founded in 1870, when Alfred Slapps Barrett and Major William Holland opened a grocery shop in Bishop's Stortford. It is based in Nuneaton, Warwickshire, and has been owned by LetterOne's L1 Retail since 2017.
All 32 Holland & Barrett products, priced per doseVisit Holland & Barrett (opens in a new tab)
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