5-HTP Powder

100% Pharmaceutical grade, Bulk Nutrients' 5-HTP Powder is an amino acid commonly used to help appetite suppression, sleep quality and mood.

  • Lactose Free
  • Gluten Free Ingredients
  • Vegetarian
  • Vegan
  • Taste
  • Effectiveness
  • Value for Money

Great prices when buying in Bulk

  • 10g = AU$17
  • 40g = AU$65 (AU$16.25 each)

Pharmaceutical Grade 5 HTP Powder

5-Hydroxytryptophan (5-HTP) also known as oxitriptan is a naturally occurring amino acid and chemical precursor as well as a metabolic intermediate in the biosynthesis of the neurotransmitters serotonin and melatonin from tryptophan.

It is taken for many reasons, with studies showing it to have positive effects on appetite suppression, sleep quality, reduction of migraines, improvements to anxiety and mood. Bulk Nutrients’ 5 HTP is derived from plants, so is a more natural form of 5-HTP.

5-HTP is suitable for people who are looking for increases in mood and happiness as well as those who want to tackle some of the mental issues surrounding weight loss.

It is advised that 5-HTP should not be taken by people on SSRIs or other types of antidepressants. Please seek medical advice before consuming this product if you also take SSRIs.

Worried about the taste of 5-HTP? It’s now available in capsule form here!

Directions & Ingredients

5 HTP Directions

5-HTP can be taken any time of day, however many users consume it before sleeping.

A typical dosage of 5-HTP is 100mg.

As the serve is very small, we recommend using microscales when dosing.


100% Pharmaceutical grade 5-Hydroxytryptophan Griffonia Simplicifolia Seed Extract.




Keep well sealed, protect from moisture, light and heat.

Bulk Nutrients is proudly Australian owned and operated with all products developed, blended and packed locally in our facility in Grove, Tasmania. Find out more!

Frequently asked questions about 5-HTP Powder

How does 5-HTP taste?

5-HTP is unflavoured and is generally considered to be bitter. You can purchase this product in capsule here.

What is 5-HTP made from?

5-HTP Powder is derived from Griffonia Seeds.

Are samples available of this product?

Sorry we do not provide samples of 5-HTP.

How is 5-HTP packaged?

Bulk Nutrients’ 5-HTP is packaged in resealable 10g pouches.

5-HTP Nutrition Panel

5-HTP Powder Nutrition Information
Servings per 10g package: 100
Servings size: 100mg
Average Quantity Per Serving Average Quantity Per 100g
Energy (kj) 0 0
Protein (g) 0 0
Fats (g) 0 0
  (saturated) (g) 0 0
Carbohydrates (g) 0 0
  (sugars) (g) 0 0
Sodium (mg) 0 0
5-Hydroxytryptophan (mg) 100 100,000

Formulated Supplementary Sports Food. Not suitable for children under 15 years of age or pregnant women. Should only be used under medical or dietetic supervision. This product is not a sole source of nutrition and should be consumed in conjunction with a nutritious diet and appropriate physical training or exercise program.

5-HTP Powder Reviews

Happy sleeper

Posted by Will on August 13, 2018

Im a very light sleeper and tend to wake every few hours. I haven’t been on this long but my sleep and mood has been improving. Still working on the dose as i think the recommended is a bit too much for me.

Im not sure.

Posted by Anon on July 22, 2018

It gave me a mellow mood really relaxed but my stomach couldn’t handdle it. It gave me too much neusea i couldn’t move for 2 hours. Its probaly my tolerance to it. I still think its quite pure. Tue packaging could have been better as you lose alot of the product. Maybe ill try the pills as ill be getting the recommended dose.

Want a decent mood?

Posted by Anon on June 28, 2018

This stuff is great for depression or general moodiness – whatever you want to call it. It helps with lucid dreams too. It is some of the stuff that helps make serotonin and it works.

great service

Posted by Shehan on May 15, 2018

only just started taking this, so not sure how well it will work, however, the customer service is fantastic. Received product the next day!

Good product, average packaging

Posted by Nick on May 1, 2018

Excellent product, works a treat. Needs a smaller packet, to difficult to get product out of bag. Would be best if it were in a plastic container.

Product Great

Posted by Gillian on March 1, 2018

This is a great product, I have been having digestive problems after 13 major surgeries and suffering from Crohn’s Disease my whole life. Currently I can only tolerate a liquid diet. Was very depressed, found this and started taking it and it has made a HUGE difference to my life. Only have very mild depression symptoms now, and sleep better at night. Bought the powder to get the dose right, looks like 100mg suits my 50 kg frame. Only bad thing is the packaging. The 10 grams of powder is lost in the large packet, very hard to get it out and measure the same dose every night. I purchased miniature measuring spoons from ebay and they make life much easier. Sort out the correct spoon for your dosage with the scales then off you go. Can be tricky getting it in and out of the bag, often get powder everywhere, but usually just lick it off. A pill container would work much better for this power.


Posted by Dave on December 24, 2017

100mg works well for mood and getting to sleep. Put 100mg in my Pre Workout Powder (Non Stimulant). Don’t know if anyone else has tried this or if it was just a coincidence but it made the weights feel considerably lighter and I was able to use more weight than I have in a decade. I will definitely be trying that again. I also cut the bag open and emptied it into an old pill bottle through a small funnel. No wastage. Easy.

Get 5htp.. get the caps!

Posted by Dan on December 5, 2017

Such a good quality product.. packed in the worst bag. Don’t think it’s worth the saving compared to the caps. I first tried it to repair a melted brain after a heavy weekend but discovered its powers to level everything out day to day. Everything’s a little more manageable. It also helps me sleep deeper and improves my already vice dreaming.

Packaging of powder very impractical

Posted by Cam on November 18, 2017

The 10mg powder takes up about 5% of the bag it comes it, meaning you get a greater volume of the powder on your hand than in the spoon your using to find the powder at the bottom of the package. Since dosages are really small, I imagine most of the powder will be wasted. Also the 5-htp powder doesn’t seem to dissolve or mix with liquids making it difficult to take. Other than the terrible packaging, the powder itself seems to be of good quality. Recommend it be repackaged in a bag 1/10th of the size, or alternatively, buy the capsules.

Fantastic value

Posted by NICK on October 20, 2017

Good quality Griffonia Simplicifonia, however the pouch is a very inconvenient packaging choice! Why not use the small 25-50gm pill bottle type? I used to be a quality controller in food additives and it would be so perfect to take doses from and fairly cheap and easy to source. I can understand if this is a new product for your line however but you should invest in this for 5htp alone perhaps. Thank you though will be ordering more down the track!

Sleep like a baby

Posted by Anon on May 26, 2017

Makes you sleep like a baby. Be careful not to have too much at first (stick to 50-100mg) otherwise you might experience some bad dreams/panicking. Makes you feel really relaxed the next day and helps curb hunger. I wouldn’t say it does it instantaneously but give it a week or two and the benefits will start to kick in. The packet is really annoying and wastes a bit of the product but is so much cheaper than the pill version… So I am conflicted.

Works well but get capsules

Posted by Rob on April 4, 2017

Works in a high pressure environment so tried this to see if it would help with sleep and improved. Definitely found it to be helping my sleep and less irritable at work.
Only gripe would be the powder form is fiddly. The pouch is far too big for the amount of powder.