Intestinal Cleanse

Traditional bitter-herb cleanse for intestinal and microbial balance

Intestinal Cleanse is one of Malcolm Harker’s most distinctive original tonics: a strong, bitter herbal formula designed for a focused 7–14 day digestive cleanse. Black walnut leaf, wormwood, clove, ginger and cayenne are traditionally used in cleansing formulas to support healthy digestion, intestinal microbial balance and a cleaner gut environment. Ideal as a periodic ‘spring clean’, particularly after travel or whenever you feel sluggish and ready for a reset.

  • Supports parasite removal
  • Supports healthy microbial balance in the intestinal tract
  • Gently cleanses the intestinal tract
  • Potent botanical blend with over 10 herbs and essential oils
  • Popular after overseas travel or when feeling sluggish
  • Master Herbalist formulated
Bitter Sweet
Thin Thick
Size
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Delivery every 6-weeks — first 0% / recurring 20%
Delivery every 8-weeks — first 0% / recurring 20%

$41.50

or 4 payments of $10.37 NZD with

Intestinal Cleanse
Intestinal Cleanse $41.50
Intestinal Cleanse
$41.50

or 4 payments of $10.37 NZD with

Intestinal Cleanse
  • Supports parasite removal
  • Supports healthy microbial balance in the intestinal tract
  • Gently cleanses the intestinal tract
  • Potent botanical blend with over 10 herbs and essential oils
  • Popular after overseas travel or when feeling sluggish
  • Master Herbalist formulated
Bitter Sweet
Thin Thick

Ideal for when you're feeling

Sluggish
Infested
Tired

Format

Liquid

Suitable for

Over 12 years

Flavour profile

Strong Herbal
Size
Subscription Save 4, 6 or 8 weeks
Delivery every 4-weeks — first 0% / recurring 20%
Delivery every 6-weeks — first 0% / recurring 20%
Delivery every 8-weeks — first 0% / recurring 20%
Purchase Options

Delivery Frequency

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Details

Intestinal Cleanse is a gentle cleanse for the digestive tract to support healthy digestion, increased energy levels and discourage parasites. A clean gut helps absorption of essential minerals and nutrients from foods and, with most of our immune cells being found in the gut, provides a healthy environment for immune cells to thrive. 

How to take

Adults over 12 years:
For best results, take for 7 days or longer up to 14
days maximum. For the first 2-3 days, take 2.5-5 ml
three to four times daily, increasing to 10-20 ml three
to four times daily. Take 5–10 minutes before meals.


Shake well before use. Swill in the mouth for 10
seconds before swallowing if possible.


Repeat 4 times a year to support reduced parasite
populations and a clean gut

Herbalist tips
  • This formula is very strong, and some people can experience nausea over the first few days of this parasite cleanse. Try reducing the dose to half, and slowly building up to the recommended dose.
  • You may find the extra strong herbal flavour of this tonic challenging to take. Persevere! Try taking it slowly with just one dose a day to start with, and build up frequency over the course of week.
  • As a Malcolm Harker original tonic, Malcolm recommended doing a parasite cleanse four times a years for 1-2 weeks.
  • Malcolm also recommended avoiding mucus forming foods such as gluten, egg-white, chocolate, dairy, polyunsaturated oils and regular table salt
  • Malcolm also recommended adopting gluten-free grain foods, whole foods (greens, fruits nuts, seeds), unprocessed coconut oil and Celtic & NZ Sea Salt with Kelp
Ingredients

Each 5ml dose contains:

Dried herbs: Wormwood and Black Walnut Leaf 111.11 mg each, Cayenne Pepper Fruit and Ginger Root 12.50 mg each, Licorice Root 5.21 mg.

Essential oils: Clove Bud and Orange 0.004 ml each, Lemon and Lime 0.002 ml each plus Thymol 2.54 mg, Iodine 1.04 mcg and D Limonene Oil 0.002 ml.

In a base of Vegetable Glycerine, Irish Moss, Jojoba Oil, Celtic Sea Salt, Citric Acid and Water

Benefits

Gently cleanses the digestive tract
Discourages parasites in the intestinal tract
Supports healthy digestion
May support microbial balance in the intestinal tract
Improves feelings of well being and restores energy
Liquid formula for fast absorption
Can be taken long term
Vegan-friendly
Not to be taken while pregnant or breastfeeding

Not to be taken while pregnant or breastfeeding.

Always read the label and use only as directed. If taking prescribed medication, consult your health professional before taking this product. If symptoms persist, seek professional medical advice.

Intestinal Cleanse

Ideal for when you're feeling

Sluggish
Infested
Tired

Format

Liquid

Suitable for

Over 12 years

Flavour profile

Strong Herbal

I know it tastes very medicinal, but it works and the herby flavour reassures me it's natural.

Multi herb formula
Natural Plant Extracts
No GMO & vegan friendly ingredients
No preservatives, artificial colours or flavours
Ingredients Tested for purity, potency and efficacy
Multi herb formula
Natural Plant Extracts
No GMO & vegan friendly ingredients
No preservatives, artificial colours or flavours
Ingredients Tested for purity, potency and efficacy
What is Intestinal Cleanse?

Intestinal Cleanse is a gentle cleanse for the digestive tract to support healthy digestion, increased energy levels and discourage parasites. A clean gut helps absorption of essential minerals and nutrients from foods and, with most of our immune cells being found in the gut, provides a healthy environment for immune cells to thrive. 

How it works

Gently cleanses the digestive tract
Discourages parasites in the intestinal tract
Supports healthy digestion
May support microbial balance in the intestinal tract
Improves feelings of well being and restores energy
Liquid formula for fast absorption
Can be taken long term
Vegan-friendly
Not to be taken while pregnant or breastfeeding

Use Cases

People commonly use this herbal blend when experiencing:

- Suspected worms or parasites
- Low energy & fatigue
- Post-international travel
- Changes in diet
- Prone to frequent illness
- Periodic detox and intestinal cleansing
- Short-term wellness programmes

Ingredients

Each 5ml dose contains:

Dried herbs: Wormwood and Black Walnut Leaf 111.11 mg each, Cayenne Pepper Fruit and Ginger Root 12.50 mg each, Licorice Root 5.21 mg.

Essential oils: Clove Bud and Orange 0.004 ml each, Lemon and Lime 0.002 ml each plus Thymol 2.54 mg, Iodine 1.04 mcg and D Limonene Oil 0.002 ml.

In a base of Vegetable Glycerine, Irish Moss, Jojoba Oil, Celtic Sea Salt, Citric Acid and Water

Usage Instructions

Adults over 12 years:
For best results, take for 7 days or longer up to 14
days maximum. For the first 2-3 days, take 2.5-5 ml
three to four times daily, increasing to 10-20 ml three
to four times daily. Take 5–10 minutes before meals.


Shake well before use. Swill in the mouth for 10
seconds before swallowing if possible.


Repeat 4 times a year to support reduced parasite
populations and a clean gut

Herbalist tips
  • This formula is very strong, and some people can experience nausea over the first few days of this parasite cleanse. Try reducing the dose to half, and slowly building up to the recommended dose.
  • You may find the extra strong herbal flavour of this tonic challenging to take. Persevere! Try taking it slowly with just one dose a day to start with, and build up frequency over the course of week.
  • As a Malcolm Harker original tonic, Malcolm recommended doing a parasite cleanse four times a years for 1-2 weeks.
  • Malcolm also recommended avoiding mucus forming foods such as gluten, egg-white, chocolate, dairy, polyunsaturated oils and regular table salt
  • Malcolm also recommended adopting gluten-free grain foods, whole foods (greens, fruits nuts, seeds), unprocessed coconut oil and Celtic & NZ Sea Salt with Kelp
  • Not to be taken while pregnant or breastfeeding.
  • Always read the label and use only as directed. If taking prescribed medication, consult your health professional before taking this product. If symptoms persist, seek professional medical advice.

Trusted by New Zealand families for 45 years

Made in New Zealand in a GMP - certified facility

Master Herbalist formulated

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I know it tastes very medicinal, but it works and the herby flavour reassures me it's natural.

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Powerful natural ingredients

Our pure and powerful herbal extracts work hard for your wellness. Every spoonful delivers meaningful levels of active ingredients, each sourced from trusted growers around the world.

View Our Ingredients Glossary
Black Walnut

Black Walnut

Juglans nigra

Indigenous peoples of North America used black walnut hulls for various medicinal purposes, including treating parasitic infections and digestive issues. A key bioactive compound in black walnut hulls, juglone is known for its antifungal, antibacterial, and antiparasitic properties.

Wormwood

Wormwood

Artemisia absinthium

A study published in Phytomedicine demonstrated that wormwood significantly reduced the parasite burden in animals, suggesting its potential as a natural treatment for intestinal parasites. Wormwood contains bitter compounds like absinthin and anabsinthin which have anti-parasitic properties as well as thujone, known for its antiparasitic properties and is found in wormwood oil. These bitter compounds stimulate the digestive juices and bile, which helps expel parasites.

Licorice

Licorice

Glycyrrhiza glabra

One of the most widely used and trusted herbs in traditional medicine, licorice is also available in Germany as an over-the-counter medicine. It contains glycyrrhizin, reported to have anti-inflammatory and antimicrobial activities as well as being up to 50 times sweeter than cane sugar. It is also reported to promote a healthy adrenal response to stress. Used for respiratory infections, digestion and healthy mood.

What sets Harker Herbals apart

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Multi-herbal formula with plant extracts

Complex blends combining multiple herbs and high-quality plant extracts that work synergistically for broader support.

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Master-Herbalist formulated

Professionally developed by experienced herbalists using traditional + modern herbal knowledge.

Master-Herbalist formulated Master-Herbalist formulated
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Non-GMO, Vegan-friendly

Made with clean, naturally derived ingredients and free from unnecessary synthetics or artificial additives.

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Made in New Zealand in GMP facility

Manufactured to GMP quality standards in New Zealand.

Made in New Zealand in GMP facility Made in New Zealand in GMP facility
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Ingredients third-party tested

Ingredients are third-party tested for heavy metals, pesticides and verified for authenticity and purity

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Ingredients third-party tested Ingredients third-party tested

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