5-HTP 100mg (Previously named Happy Days)

With complementary B vitamins and zinc.

"Excellent product, will order again in the near future."

1-2 month supply Only 14p per day
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What is 5-HTP 100mg?

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

5-Hydroxytryptophan, more commonly known as 5-HTP, 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 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 the vitamins B3, B6 and C, plus folic acid, biotin and zinc. These nutrients have been included for their numerous associated benefits, none more so than vitamin B3, B6 and biotin which support normal psychological functions and normal functioning of the nervous system.

The 5-HTP used in Healthspan 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).

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Key Features

  • A natural way to boost serotonin levels.
  • Inclusion of vitamins B3 and B6 to support normal psychological function.
  • Added biotin, folic acid and zinc.
  • One of our top selling products, receiving a 5-star review rating.

Recommended Intake

Initially, swallow one tablet daily with water, increasing to a maximum of three tablets daily if required. 
Use for up to three months, then stop for one month and review.

Tablet / Capsule Information

  • Width 20.2mm
  • Height 8.8mm
  • Shape Oval

Note: Colour of the tablet shown here may differ slightly. This has no effect on the quality of the product and is part of the natural manufacturing process. Tablet not shown at actual size.

Typical values per Tablet   % NRV
Griffonia Seed Extract
providing 5-HTP 100mg
Vitamin B3 30mg NE 188
Vitamin B6 2.8mg 200
Vitamin C 80mg 100
Biotin 50 µg 100
Folic Acid 100 µg 50
Zinc 5mg 50
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NRV:Nutrient Reference Value RE: Retinol Equivalent a-TE: Alpha Tocopherol Equivalent NE: Niacin Equivalent µg: Micrograms

Recommended Intake

Initially, swallow one tablet daily with water, increasing to a maximum of three tablets daily if required. 
Use for up to three months, then stop for one month and review.


Bulking Agent: Maltodextrin, Griffonia Seed Extract (5-Hydroxytryptophan), Vitamin C Prep. (Ascorbic Acid, Hypromellose), Bulking Agent: Microcrystalline Cellulose, Nicotinamide, Coating (Hypromellose, Titanium Dioxide, Glycerin, Iron Oxides), Zinc Citrate, Stearic Acid, Anti-Caking Agent: Silicon Dioxide, Magnesium Stearate, Pyridoxine Hydrochloride, Folic Acid, Biotin.

Additional Information

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.t Time 5-HTP (previously named Sweet Dreams).

Independent Reviews for Happy Days 5-HTP Tablets

Overall Rating: 4.52 / 5 stars, based on 518 reviews Below you can find the latest 25 reviews. To access the full list please click here

19 February 2017

Excellent product, will order again in the near future.

19 February 2017

Absolutely, the best products, from the most reliable Company!

18 February 2017

I find these tablets help to lift mood during the winter months

16 February 2017

Don't think I am on these long enough to form an opinion yet

Thank you for taking the time to leave a review -   We do hope that you find this product of benefit - Nicola

14 February 2017

J'utilise ce produit régulièrement et il me donne satisfaction.

Thank you for sharing your experience with us.


13 February 2017

Excellent, would buy from them again

Thank you for your feedback - We are delighted to hear that you like our new packaging.


13 February 2017

Good product. I'm definitley feeling the benefits

It's great that you have benefit from taking our 5-HTP.

12 February 2017

Need more time to see how effective these are.

11 February 2017

A bit early to see any improvement.

09 February 2017

this is a great product to take when youre feeling low in mood. i have tried other over the counter herbal remedies.but i read reviews on these,and these just take the edge off,

08 February 2017

Good price and effective items but let down by being posted in a clear wrapper.

08 February 2017

I have found this product to be very effective when needed.

Thank you for sharing your experience.

08 February 2017

Excellent and a good price.

07 February 2017

bought these for my son and he says they are helping

07 February 2017

Smashing all round. Doing me good and half price.

It's lovely to hear how well the product is working for you.


06 February 2017

Felt a difference within a couple of days. Definitely recommend this product.

04 February 2017

I had no problem finding and buying this product.

03 February 2017

These definitely make me feel more balanced at certain times in my life and I always keep a stock in!

It's great to hear that the 5-HTP is benefiting you.

02 February 2017

Both my daughter and partner take these for depression and anxiety and they make a difference to their quality of life. Highly recommend.

We appreciate you taking the time to share your feedback - We are delighted to her how well the product is working for your daughter and husband.


01 February 2017

I've been taking these tablets for a month now. I've increased the dose to 2 daily & they are definitely making a difference to my overall wellbeing.
Before discovering 5 HTP I had thought I may have to go back on prescription drugs for anxiety & depression, but I was not keen due to some nasty side effects I had experienced. Particularly numbness in my arms & hands.
I've not experienced any side effects on 5 HTP so far. They are large pills but remarkably easy to swallow.
Amazing cost. Can't find them this cheap anywhere else.
Thank you...

We appreciate you taking the time to leave a review - as above - Nicola

31 January 2017

Brilliant quality product

31 January 2017

Very pleased with this product have been using this for years can highly recommend

30 January 2017

I've just completed this I think.

29 January 2017

very good helpful product

29 January 2017

My wife uses these - effective ness yet to be determined