We earn commission on purchases made through our links. It never affects ranking: tables are ordered purely by price per dose, and no retailer or brand can pay for position.We earn commission when you buy through our links. It never affects the ranking. Full disclosure.

perdose
Updated

Home › Amino acids & derivatives › L-Theanine

NOW FoodsAmino acids & derivativesVegan

L-Theanine 200mg, 60 capsules

£14.19 for 60 capsules at Healf. That works out at 24p per 200 mg, which ranks it 5th of the 12 L-theanine products we price across 4 UK retailers.

What it really costs, per 200 mg24pOne 200 mg dose is our comparison unit for L-Theanine. It is not a recommendation.
A day24p
A week£1.66
A month£7.10
A year£86.32

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
  • £14.19 ÷ 12 g × 200 mg = 23.6p per 200 mg
  • A week 23.6p × 7 = £1.66 · a month × 30 = £7.10 · a year × 365 = £86.32
  • Amount per serving: stated on the label.

Inositol

  • Servings: 60 ÷ 1 per serving = 60
  • In the pack: 60 × 100 mg = 6 g
  • £14.19 ÷ 6 g × 2 g = £4.73 per 2 g
  • A week £4.73 × 7 = £33.11 · a month × 30 = £141.90 · a year × 365 = £1726.45
  • 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 L-theanine

All 12, ranked →
L-TheanineCheapest per 200 mgHealf · 200 mg a serving · £4.12 a month · a pack lasts 4 months14p£16.49View at Healf (opens in a new tab)
L-TheanineHealf · 250 mg a serving · £5.60 a month · a pack lasts 2 months19p£13.99View at Healf (opens in a new tab)
L-TheanineW-Wellness · 250 mg a serving · £6.20 a month · a pack lasts 2 months21p£15.49View at W-Wellness (opens in a new tab)
L-Theanine 200mg 60 CapsulesHolland & Barrett · 200 mg a serving · £7.00 a month · a pack lasts 2 months23p£13.99View at Holland & Barrett (opens in a new tab)
This productHealf · 200 mg a serving · £7.10 a month · a pack lasts 2 months24pshown above

Switching to the Healf pack saves £2.97 a month at the same 200 mg dose.

Ranked purely by price per 200 mg. 70 combination products also contain L-Theanine.

How it compares: myo-inositol

All 17, ranked →
InositolCheapest per 2 gBulk · 500 mg a serving · £3.84 a month · a pack lasts 1.4 years13p£63.99View at Bulk (opens in a new tab)
InositolBulk · 500 mg a serving · £4.08 a month · a pack lasts 8 months14p£33.99View at Bulk (opens in a new tab)
Myo-Inositol Powder 200gLamberts Healthcare (Nature's Best) · 4 g a serving · £5.67 a month · a pack lasts 3 months19p£18.90View at Lamberts Healthcare (opens in a new tab)
This productHealf · 100 mg a serving · £141.90 a month · a pack lasts 3 days£4.73shown above

Ranked purely by price per 2 g. 54 combination products also contain inositol.

On the label

L-Theanine · L-theanine
200 mg per serving (stated on the label)
Inositol · Myo-inositol
100 mg per serving (stated on the label)
Pack
60 capsules · 60 servings · 1 capsule(s) a serving
Cost per serving
24p (60 servings in the pack)
More label details
Claimed on the listing
vegan
Sold by
Healf
What the listing says
“60 caps” · “Servings Per Container: 60” · “Serving Size: 1 Veg Capsule” · “Inositol ; 100 mg”
Ingredients

L-Theanine, Inositol, Hypromellose (Cellulose Capsule), Stearic Acid (Vegetable Source), Anti-Caking Agent (Silicon Dioxide)

From the Healf listing. Check the pack itself if you have an allergy: labels mark allergens in bold.

Is something wrong? Tell us

Add to your basket

View basket

Your basket prices everything you take together: whole packs, delivery included, from as few websites as you like.

One 200 mg dose is our comparison unit, not a recommendation.

Price history

3 price changes since 1 October 2026. Checked on 20 days, most recently 20 October 2026.

Lowest recorded
£14.1915 Oct
Highest recorded
£14.491 Oct
First recorded
£14.491 Oct
Checked on
20 dayssince 1 Oct
Pack price at each check.
  1. Down at Healf: £14.29 → £14.19 (−0.7%)
  2. Down at Healf: £14.39 → £14.29 (−0.7%)
  3. Down at Healf: £14.49 → £14.39 (−0.7%)
1 earlier entry
  1. First checked at Healf: £14.49

Questions about this product

How much does NOW Foods L-Theanine 200mg cost per 2 g?

£4.73 per 2 g, from £14.19 for 60 capsules at Healf, checked on 20 October 2026.

How long does one pack last?

3 days at one 2 g dose. The pack holds 6 g in total.

How much does NOW Foods L-Theanine 200mg cost per 200 mg?

24p per 200 mg, from £14.19 for 60 capsules at Healf, checked on 20 October 2026.

Is it the cheapest L-theanine in the UK?

No, it is 5th 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 NOW Foods

All 109 NOW Foods products, priced per dose

More from NOW Foods

Keep comparing

All L-TheanineEvery form, cheapest per 200 mg firstL-Theanine guideWhat it is, why people take it, how the forms differNOW FoodsAll 109 products from this brand, per doseAmino acids & derivativesEverything else we price in this categoryL-Theanine price historyEvery L-Theanine product's price per dose and price historyBuild a basketThe cheapest way to buy several at onceHow we compareWhere every number on this page comes from