5-HTP 100mg (Previously named Happy Days)

100mg 5-HTP with zinc and B vitamins

60 Tablets
1-2 month supply

5-HTP 100mg (Previously named Happy Days)

60 Tablets

Key Features

  • A natural way to increase your levels of 5-htp
  • Contains vitamin B3, B6 and zinc to support normal psychological and neurological functions
  • Also includes vitamin C, zinc, folic acid and biotin

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.

Why Healthspan's 5-HTP?

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. Each tablet contains 100mg of pure 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.

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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.

Perfect Partners to 5-HTP

These products work in perfect synergy alongside 5-HTP

Independent Reviews for Happy Days® 5-HTP Tablets

We use the independent Feefo service to collect our reviews - so you can be sure that they are verified and unedited Find out more

Overall Rating: 3.92 / 5 stars, based on 25 reviews

22 March 2015

Actually, I have tried, but probably not for long enough. Didn't want to give unfair reading either way.

21 March 2015

I have severe hearing loss and weak eyesight, so i am hoping this new product will help with both.

20 March 2015

Have used this product to regulate sleep and it seems to help

18 March 2015

Excellent product, helped me a lot to improve my health, will order again

18 March 2015

As above!

17 March 2015


15 March 2015

I do not believe it works for me.

14 March 2015

I recently had a bereavement abd the Dr offered me anti-depressants. But i wasnt keen. A friend of mine recommended 5HTP, i was sceptical, but tried them. It took about 2 weeks to have an effect, but i do feel brighter. Much less anxious, and sleep better. Defineately worth a go .

14 March 2015

Really help in times of anxiety and take the edge off my stress

13 March 2015

Better than anti-depressants which I would not touch!

13 March 2015

I have M E and have found this beneficial to create upliftment and energy in my brain on the bad head days.

09 March 2015

Mild, used for SAD

09 March 2015

Have also only recently started to take this one so again cannot comment.
Same comment as above, as they are both new supplements to me

07 March 2015

using it to replace Amazon's 200mg version - no longer available

06 March 2015

My wife finds this product helps her through winters dark days, helping with her depression.

04 March 2015

Seems to be helping me feel calmer and am sleeping much better

04 March 2015

Makes my girlfriend calmer

04 March 2015

Who knows - it's always an act of faith at best.

04 March 2015

Definitely seems to be having a positive effect. I recently stopped taking Prozac as I wanted something gentler and more natural to help with mood swings and low mood. I have not returned to these symptoms since taknig 5HTP. Thank you

04 March 2015

Difficult to tell if it is helping.

03 March 2015

This is the first time using this product so only experimental at the moment but seems to be working okay at the moment and helping me to get a better night's sleep.

02 March 2015

I think I do feel a bit better through taking this but not sure if I should take 2 a day instead of one.

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.