5-HTP 100mg (Previously named Happy Days)

100mg 5-HTP with zinc and B vitamins

Only 24p per day 1-2 month supply
60 Tablets

5-HTP 100mg (Previously named Happy Days)

60 Tablets

Key Features

  • A natural way to boost serotonin levels and increase your levels of 5-htp
  • Contains vitamin B3, B6 and zinc to support normal psychological and neurological functions
  • One of our top selling products, receiving a 5 star review rating

Product Overview

  • Gluten Free
  • Suitable for Vegetarians
  • Suitable for Vegans
  • Gelatin Free
What is 5-HTP? 

5-Hydroxytryptophan, more commonly known as 5-HTP, is is derived from the amino acid L-tryptophan. 5-HTP is converted in the body into the brain chemical messenger serotonin. Serotonin is a neurotransmitter; it helps send messages from one part of the brain to another. Serotonin influences the majority of the cells in the brain, including sleep, appetite, mood and sexual desire. 

Why Healthspan's 5-HTP?

Healthspan's 5-HTP 100mg is one of our most popular supplements, receiving a 5 star review rating. Each tablet contains 100mg of pure, natural 5-Hydroxytryptophan along with other important nutrients including vitamin B3, vitamin B6, vitamin C, zinc, folic acid and biotin. These nutrients have been included for their numerous associated benefits, none more so than vitamin B3, B6 and zinc which support normal psychological and neurological functions.

Also the 5-HTP used in Healthspan’s 5-HTP 100mg is sourced exclusively from the seeds of the West African Griffonia simplicifolia tree, the only natural source available. 

Alternatively if you are looking for a natural sleep aid why not try our Night Time 5-HTP (previously named Sweet Dreams)

Read more

Product Information


Initially one tablet daily, increasing to a maximum of three daily if required. Use for three months, stop and review

Key nutritional values

Typical values, % NRV (where applicable) in brackets:

L-5-Hydroxytryptophan (5-HTP) 100mg
Vitamin B3 30mg (166)
Vitamin B6 2.8mg (200)
Vitamin C 80mg (100)
D-Biotin 50mcg (100)
Folic Acid 100mcg (50)
Zinc 5mg (50)


Maltodextrin, Vitamin C, L-5 Hydroxy Tryptophan (5-HTP - Griffonia Seed Extract), Cellulose, Vitamin B3, Coating (Hypromellose, Glycerin - of vegetable origin, Iron Oxide), Zinc Citrate, Vitamin B6, Stearic Acid - of vegetable origin, Silica, Magnesium Stearate - of vegetable origin, Folic Acid, D-Biotin.

Not suitable for pregnant or lactating women. May cause drowsiness; do not drive or operate machinery if affected. If you are taking any prescribed medication or have any medical conditions always consult your doctor or pharmacist before taking vitamins or supplements. Keep out of sight and reach of young children. Do not exceed stated recommended intake. Food supplements must not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Store in a cool, dry place. If you experience an adverse reaction, stop taking the supplement and seek medical advice.

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Independent Reviews for Happy Days® 5-HTP Tablets

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

Overall Rating: 4.49 / 5 stars, based on 25 reviews

27 September 2015


24 September 2015

some side effects like feeling cold after taking

23 September 2015

It calms me and helps me to put things in perspective instead of flying off the handle.

22 September 2015

Improves mood

22 September 2015

I rely on this product all winter and during dull spells at other times. I suffer from SAD syndrome and this product has improved my life.

21 September 2015

This product helps my mood and improves my sleep pattern

20 September 2015

I placed an order at the end of August which hasn't arrived as yet. I contacted Healthspan customer services and they are to dispatch the goods again (their records show the item has been posted out, though I haven't received it). Have always had good service from Healthspan.

20 September 2015

Always a prompt service. Top quality product.

19 September 2015

This is the first purchase of these

16 September 2015

Speedy, efficient service at a reasonable price.

14 September 2015

orders are always promptly delivered, products of high quality and information clear and useful

10 September 2015

feel very good

10 September 2015

Getting older and energy levels were flagging.

05 September 2015

Great in all ways.

04 September 2015

Always straightforward with prompt delivery.

02 September 2015

I've more energy

28 August 2015

Using it - one a day - and no idea what effect I'm getting.

25 August 2015

Not known yet.