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SALE EXTENDED! - EVERYTHING IS REDUCED! Sale Ends 23:59 28th Jan 2022

5-HTP Capsules - 100mg

High grade 99% pure and naturally sourced 5-HTP

568 reviews9410020
Only 13.0p per capsule
In stock
- Best Price
Only 11.0p per capsule
-10 in stock
In Stock

Key features

  • UK sourced, 99% pure 5-HTP
  • Vegan friendly cellulose capsule
  • Supports sleep and mood
  • Good alternative to St John's Wort
5-HTP 100mg capsule view
Capsule Size
19mm x 6.6mm capsule
  • Description
  • Product Information
  • Feefo Reviews Reviews

What is 5-HTP?

5-HTP is converted in the body into the brain chemical messenger serotonin. Serotonin in the brain acts as a chemical messenger and is influences the majority of the cells in the brain, including sleep, appetite, mood and sexual desire.

5-HTP is derived from West African Griffonia simplicifolia tree, the only natural source available, using a specially developed process that retains as much of the active ingredient as possible. The supplement is then encapsulated in a fully vegetarian cellulose capsule, each providing 100mg of 5-HTP (in amino acid form).

Why buy a 5-HTP supplement?

Serotonin is involved in mood, appetite and impulse control, and has an effect on our state of restfulness.

Unlike cheaper Griffonia Seed powder, our UK-sourced material is 99% pure. This means that it only requires 101mg of Griffonia Seed to make our capsules. Some of the cheaper supplements on the market use inferior 70% material so please be aware of what you are buying.

'Peak-X' free

You can also be assured that our 5-HTP is certified to be 'Peak-X' free, and is sourced and manufactured in the UK to GMP quality standards.

Nutritional Information
One capsule typically provides 100mg of 5-HTP (L-5-Hydroxytryptophan)
Allergen Advice
Ingredients containing allergens are highlighted in bold in the ingredients list. 
Cautions / Possible Side Effects
Do not use if under medical supervision without consulting a medical practitioner. Pregnant and/or lactating women should consult their doctor before taking this product. May cause drowsiness.
List of Ingredients
Bulking Agent (Gluten-Free Stoneground Brown Rice Flour), Griffonia Seed Extract, Capsule shell (Hydroxypropylmethyl Cellulose), Natural Rice Extract, Anti-caking agent (Natural Rice Concentrate).
Dosage / Suggested Intake
Swallow one to three capsules per day, 45 minutes before bedtime. Take for 3 months then stop for a month and review.


Legal Category
Food Supplement with Griffonia Seed extract


Customer Reviews for 5-HTP 100mg

The views expressed below are the personal opinion of Just Vitamins customers. Just Vitamins does not endorse these views, nor should they be regarded as health claims or medical advice. All reviews are collected and verified as genuine by a 3rd party called Feefo.

Overall product rating 9.4 / 10 - 568 customers have independently reviewed and recommend 5-HTP from 568 reviews (showing latest 25 reviews)
Review Date
Review Details
Quick & Easy
Quick delivery
Very happy with the product & price of just vitamins
Service rating: Very quick delivery, thank you
Product: I started taking these to overcome depression. After a while I stopped them, but realised I still needed them. They do wok.
Service rating: Great product, easy site and very quick delivery
Product: Not used this product before but have just started and have the same benefits as my last at a cheaper price
Service rating: Great value for money and a website I come back to regularly for my vitamins. The 5HTP help me sleep well and I can’t find them cheaper elsewhere.
Product: I’m taking these to help me sleep and they really work. I wake up feeling refreshed and awake
Service rating: Efficient delivery, quality product
Product: Good quality product, helps keep my mood lifted
Service rating: Always a good and reliable company. I've used them for years for my 5HTP and am very pleased with the product, packaging, swift delivery and offers.
Product: I've used this for years and have not had a depressive episode for 11 years. It has changed my life, literally.
Service rating: Quick, efficient, a quality product at a reasonable price.
Product: Quality product, have a lack of serotonin
Service rating: excellent service all round
Product: help sleep well every night
Service rating: Prompt service at reasonable prices. Will use again.
Product: Helps with sleep issues..
Service rating: fast delivery, good communication, good products, overall a fantastic retail service
Product: To help boost mood levels and aid sleep pattern development, they do the job perfectly
Service rating: Good delivery service.
Product: I use 5-HTP supplement on a regular basis to control a mild anxiety and it really helps me to feel calmer and to relax before going to bed. This is really a good product.
Service rating: As always excellent service. Prompt delivery.
Product: I’ve only been taking it for a few weeks to help with evening my mood and helping me sleep.
Service rating: Just Vitamins have a wide range of useful, high quality products at reasonable prices.
Customer service is helpful and delivery is prompt.
Product: Has some effect at helping you to sleep.
Excellent Product, excellent service. would highly recommend
Service rating: All the products I tried till now are very nice and they work as said on the site, affordable prices and also despite to the pandemic problem the deliverys are quite quick.
I'm buying on this site for long now and I'll continue to do it
Product: The supplements are very nice and functional.
I started to buy vitamins and code liver oil, and now for couple of months I'm buying supplements for menopause and can say they're working
Excellent, reliable, as ordered.
No problems with any part of the transaction. Item arrived on time, well packaged.
Service rating: Great service and product!
Product: Good quality, love the new eco packaging too
Service rating: Items recieved quickly and well packaged as usual.
Product: Seems to work as expected.
Service rating: Excellent service, great products.
Product: This stuff keeps me sane!
Service rating: Great product at a reasonable price
Product: Great product at a reasonable price
Great, as always..
Excellent. No problems.
Feedback Response: Thank you very much for taking the time to review us, however your very positive comment doesn't seem to match up to the 1-star rating that you gave us! Would you be able to review your star rating? Thanks.

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