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Amino acids & derivativesVegan

5-HTP, 60 capsules

£26.39 for 60 capsules at Healf. That works out at 88p per 100 mg, which ranks it 8th of the 9 5-HTP products we price across 6 UK retailers.

What it really costs, per 100 mg88pOne 100 mg dose is our comparison unit for 5-HTP. It is not a recommendation.

A day88p

A week£6.16

A month£26.39

A year£321.08

At one 100 mg dose a day, this pack lasts 30 days. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Servings: 60 ÷ 1 per serving = 60
In the pack: 60 × 50 mg = 3 g
£26.39 ÷ 3 g × 100 mg = 88p per 100 mg
A week 88p × 7 = £6.16 · a month × 30 = £26.39 · a year × 365 = £321.08
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 5-HTP

All 9, ranked →

ZipVit5-HTP Griffonia Seed Extract 750mgZipVit · 61.3 mg a serving · £4.90 a month · a pack lasts 4 months16p£17.99View at ZipVit

ZipVit5-HTP Griffonia Seed Extract 750mgZipVit · 61.3 mg a serving · £6.53 a month · a pack lasts 55 days22p£11.99View at ZipVit

Griffonia Seed Extract 5-HTP SupplementLamberts Healthcare (Nature's Best) · 100 mg a serving · £7.75 a month · a pack lasts 2 months26p£15.50View at Lamberts Healthcare

Higher NatureSerotone 5HTP 100mgVitamin Planet · 100 mg a serving · £8.79 a month · a pack lasts 3 months29p£26.37View at Vitamin Planet

HealthAid5-HTP 50mg 60 TabletsLloyds Pharmacy · 50 mg a serving · £13.79 a month · a pack lasts 30 days46p£13.79View at Lloyds Pharmacy

This productHealf · 50 mg a serving · £26.39 a month · a pack lasts 30 days88pshown above

Switching to the ZipVit pack saves £21.49 a month at the same 100 mg dose.

Ranked purely by price per 100 mg. 10 combination products also contain 5-HTP.

On the label

5-HTP · 5-HTP: 50 mg per serving (stated on the label)
Pack: 60 capsules · 60 servings · 1 capsule(s) a serving
Cost per serving: 44p (60 servings in the pack)

More label details

Claimed on the listing: vegan
Sold by: Healf
What the listing says: “60 caps” · “Each capsule typically contains” · “5-HTP (5-Hydroxytryptophan) ; 50 mg”

Ingredients

5-HTP (5-Hydroxytryptophan), Silicon Dioxide, Microcrystalline Cellulose, Magnesium Stearate, Hydroxypropyl Methylcellulose.

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

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Daily dosemgFordays

One 100 mg dose is our comparison unit, not a recommendation.

Price history

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

Lowest recorded: £26.398 Oct
Highest recorded: £32.991 Oct
First recorded: £32.991 Oct
Checked on: 20 dayssince 1 Oct

Pack price at each check.

8 Oct Down at Healf: £32.99 → £26.39 (−20%)
1 OctFirst checked at Healf: £32.99

Questions about this product

How much does Metagenics 5-HTP cost per 100 mg?

88p per 100 mg, from £26.39 for 60 capsules at Healf, checked on 20 October 2026.

Is it the cheapest 5-HTP in the UK?

No, it is 8th of 9. 5-HTP Capsules 100mg at Bulk works out at 13p per 100 mg.

How long does one pack last?

30 days at one 100 mg dose. The pack holds 3 g in total.

About Metagenics

All 126 Metagenics products, priced per dose

Keep comparing

All 5-HTPEvery form, cheapest per 100 mg first 5-HTP guideWhat it is, why people take it, how the forms differ MetagenicsAll 126 products from this brand, per dose Amino acids & derivativesEverything else we price in this category 5-HTP price historyEvery 5-HTP product's price per dose and price history Build a basketThe cheapest way to buy several at once How we compareWhere every number on this page comes from