5-HTP Capsules

Bulk Nutrients' 5-HTP Capsules help to aid appetite suppression and improve sleep quality and mood... all in convenient capsules.

  • Lactose Free
  • Gluten Free Ingredients
  • Vegetarian
  • Vegan

Great prices when buying in Bulk

  • 1 bottle = AU$32
  • 4 bottles = AU$100 (AU$25.00 each)

Handy Capsules

Increases relaxation

Derived from plants

5-Hydroxytryptophan (5-HTP) Capsules

5-HTP Capsules are suitable for those looking for mood support and want to tackle some of the mental barriers surrounding weight loss.

What is 5-HTP?

5-Hydroxytryptophan (commonly shortened to 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.

Our 5HTP is derived from naturally occuring Griffonia Simplicifolia Seed Extract, resulting in a Pharmaceutical Grade quality final product which is 100% pure.

Bulk Nutrients offers this in an easy to consume, capsulated 5-HTP form.

Derived from plants

As Bulk Nutrients’ 5-HTP is derived from plants, it is a more natural form of 5-HTP compared to some alternatives.

What is the 5-HTP Dosage?

At Bulk Nutrients, we recommend a typical dosage of 99mg (one capsule) at any time of the day, most users consume it before bed.

Buying 5-HTP online in Australia with Express Shipping

Bulk Nutrients offers an easy way to buy 5-HTP in Australia online, the best part is if your order is 3.5kg or under we’ll send it to you by express at no extra charge.

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.

Directions & Ingredients

Directions for 5-HTP Capsules

A typical dosage of 5-HTP is 1 Capsule (99mg) once a day.
5-HTP can be taken any time of day, however many users consume it before sleeping.


100% Pharmaceutical Grade 5-Hydroxytryptophan Griffonia Simplicifolia Seed Extract (contains polydextrose).




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

Frequently Asked Questions about 5-HTP Capsules

How do 5-HTP Capsules taste?

Capsulated products mask any unpleasant taste from the raw ingredient.

What are 5-HTP Capsules made from?

5-HTP Capsules are made from Griffonia Seeds.

Are samples of 5-HTP Capsules available?

Sorry, we do not provide samples of 5-HTP Capsules.

How are 5-HTP Capsules packaged?

5-HTP Capsules are packaged in single 120 capsule containers.

You can purchase 480 capsules for a further discount, but the product will be delivered in 4 x 120 Capsule containers.

Is the packaging for 5-HTP Capsules recyclable?

Yes! The capsule container and lid can be recycled as hard plastics in your local council pickup.

If you’d like more information, check this article which breaks down how all of Bulk’s product packaging can be recycled.

Can I receive a discount by buying more than one bottle of 5-HTP Capsules at once?

Absolutely! Price breaks for 5-HTP Capsules begin when you purchase 4 bottles. Just add 4 bottles or more to your cart to see the savings.

Are 5-HTP Capsules Vegetarian/Vegan Friendly?

Yes they are! Previously Bulk Nutrients’ capsulated products used gelatin based capsules, however in early 2019 we switched our range to use vegetable based capsules. This means our 5-HTP Capsules are now 100% vegetarian and vegan friendly.

5-HTP Capsules Nutrition Panel

5-HTP Capsules Nutrition Information
Servings per package: 120
Servings size: 1 capsule (99mg)
Average Quantity Per Serving Average Quantity Per 100g
Energy (kj) 6.06 841
Protein (g) 0.09 12.8
Fats (g) 0 0
  (saturated) (g) 0 0
Carbohydrates (g) 0.13 18.2
  (sugars) (g) 0.02 2.77
Polydextrose (g) 0.50 83.0
Sodium (mg) 0.18 24.8
5-Hydroxytryptophan (mg) 99 16,528

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.

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

5-HTP Capsules Reviews


Posted by Gloria on February 27, 2019

Having Fibromyalgia and chemical intolerant I found that studies have been done in the States about 5-HTP that shows promise . So after two weeks of taking one a day I have found it to help with moods, sleep, and more energy. Fast delivery


Posted by on February 17, 2019

Great product that had people noticing a difference in me within a few days. I have purchased the product on 3 separate occasions and had similar therapeutic responses on each occasion. Wouldn’t be without it…


Posted by biddy on December 10, 2018

Really good for ongoing pain relief when anti inflammatories don’t work or can’t be taken


Posted by Blaire on December 6, 2018

a good mood stabiliser. not sure it was too effective on improving sleep. I take one a day in the morning and notice I don’t have as many peaks and troughs in my mood and energy throughout the day.


Posted by Coral Bronkhorst on October 14, 2018

this is great and will keep taking forever if it is safe to do so. I even told my daughter about it .

Great value and effective

Posted by Sergio on October 8, 2018

This is the 4th time I’ve bought a big batch of 5-htp from Bulk Nutrients. The supplement works as expected. I use 3-5 pills as a sleep aid, and to relieve depression and anxiety. Gives me really vivid almost lucid dreams too. I looked far and wide for better value and this was the best I could find in Australia.

Top class Delivery

Posted by Gerard Kramer on August 10, 2018

I received the product within 24 hours and it comes from Tasmania and I live in Northern NSW. Even the man from Australia Post said: that is unbelievable. Will write a review about the medication in a couple of weeks but this is top class.

Migraines and 5HTP

Posted by Nesrin Akman on August 6, 2018

I tested the effectiveness of 5HTP by going without it for three weeks twice. The first few days I didn’t notice any difference, then migraines started to come back again with increasing frequency. 5HTP is not a cure once the migraine has started but its regular use reduces the severity and the frequency of the migraines with me.

Works well

Posted by Anon on July 11, 2018

Seems to work well, apparently also works well if teamed up with a Tyrosine supplement.

Packaging and postage is secure fast and efficient.

Does not seem to induce sleep if only one is taken, but can aide better sleep. Clearer dreams also seem to occur.

Would not recommend taking more than one unless at night before bed, in case it does cause any drowsiness.

No side effects experienced.

When it was not taken, no ‘withdrawal’ side effects were experienced either.

This seems to be a safer natural alternative to the various synthetic pharmaceutical anti-depressant drugs prescribed by doctors/psychiatrists, which do have reported dangerous side effects.


Posted by Therress on July 10, 2018

A friend put us on to these, they are great, better than antidepressants!

Better mood and sleep

Posted by Anon on June 17, 2018

I take these while I’m at work for 3 weeks out on site. I notice my mood is much better and I can get through the trip easily.
Have been pretty cranky when I get home tho, so I’ll try taking them at home too to see if there is any improvement in my mood.
Generally I do get a slightly better sleep while using these but not sure if they induce sleep.
All in all, good product and I’ll continue using it.

Promote deep sleep

Posted by Anon on June 7, 2018

Tends to have happy dreams and deep sleep after started taking 1 capsule prior to sleep. But whether it helps in inducing sleep is questionable. Overall wellbeing has improved after taking this for a while.