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5-HTP Capsules

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

(4.8 from 106 reviews. Read the reviews or leave your own.)


Lactose Free

Gluten Free Ingredients



Pay in four fortnightly installments when your order is over $100.

Buy in bulk and save

120 Capsules = $32.00

480 Capsules = $26.00 each

Package Size

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 are 5-HTP Capsules?

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 5-HTP 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.

5-HTP Capsules derived from plants

Bulk Nutrients’ 5-HTP Capsules are derived from plants so are a more natural form of 5-HTP compared to some alternatives.

What is the 5-HTP Capsule 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.

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

Servings per package: 120Servings size: 1 capsule (99mg)
Average Quantity Per ServingAverage Quantity Per 100g
Energy (kj)6.06841
Protein (g)0.0912.8
Fats (g)00
(saturated) (g)00
Carbohydrates (g)0.1318.2
(sugars) (g)0.022.77
Polydextrose (g)0.5083.0
Sodium (mg)0.1824.8
5-Hydroxytryptophan (mg)9916,528

5-HTP Capsules Reviews

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About Bulk Nutrients

We're an Australian manufacturer and supplier of high quality sports supplements.

Operating since 2008, Bulk Nutrients has become one of the premier Australian brands to supply nutritional products to top level athletes, competitors and those on a journey to a healthier lifestyle.

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Contact Bulk Nutrients

One thing that sets Bulk Nutrients apart is that we love to talk to our customers!

Whether you need product advice, help with the website or need a change made to your order... call us on +61 3 6266 4725.

If you prefer email you can email us day or night at

For online chat, hit the 'Chat' button in the bottom right hand corner of your screen and you'll be connected to one of our lovely customer service team.

Or if you'd like to get in touch through our online contact form, that's cool too!


We acknowledge the Traditional Owners of the land on which our organisation operates,
the Melukerdee People of the South East Nation and pay our respects to Elders past present and emerging.

Bulk Nutrients is proudly
Australian owned and operated.

7 Crabtree Road, Grove, Tasmania, 7109.
ABN: 17 158 981 447

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