2-Fucosyllactose (2-FL) 100g

Regular price $199.95 AUD

Key Benefits

  • Feeds beneficial gut bacteria to support microbiome balance.
  • Supports gut barrier integrity and immune defence.
  • Promotes digestive comfort and gut signalling.
View full range — RN Labs

Australian-owned • Independent wellness

Practitioner-grade support. Always read the label and follow the directions for use.

Shipping & Dispatch $19.95 flat rate · Free over $199

Australia Post — fully trackable.


  • Free shipping: $199+
  • Flat rate: $19.95 Australia-wide

Dispatch: usually within 1–3 business days

 Pure Gut-Nourishing Prebiotic

RN Labs 2-Fucosyllactose (2-FL) offers a high-purity, pharmaceutical-grade human milk oligosaccharide (HMO) designed to nurture a healthy, resilient gut microbiome. This gentle yet powerful prebiotic supports microbial diversity, digestive comfort, immune harmony, and overall gastrointestinal balance. Vegan, highly soluble, and easy to dose — ideal for both sensitive individuals and those working toward higher therapeutic ranges.

Feeds beneficial gut bacteria to support microbiome balance.


Supports gut barrier integrity and immune defence.


Promotes digestive comfort and gut signalling.


2-Fucosyllactose (2-FL)100 g (pharmaceutical grade)

Common dosage range: 5 – 20 g daily.
Start low: Begin with 1.25 g or 2.5 g to assess tolerance before increasing to maintenance levels.

Density: 5 ml = 2.5 g (0.5 g/ml)
Each bottle provides clear density information and includes a scoop for easy calculation.


No excipients. Pure 2-Fucosyllactose powder.


Suitable for vegans.
Free from gluten, dairy, soy, nuts, and artificial additives.

  • For adult use or as advised by a healthcare practitioner.
  • Start with low doses to assess tolerance.
  • Always read the label and follow professional guidance.
  • If symptoms persist or worsen, consult your practitioner.


Store below 25°C in a cool, dry place. Keep tightly sealed and away from moisture.

2-FUCOSYLLACTOSE FAQSCommon questions about 2-Fucosyllactose 2-FL 100g
What is 2-Fucosyllactose used for?

2-Fucosyllactose, also known as 2-FL, is a prebiotic powder used to support gut microbiome balance, beneficial gut bacteria, digestive comfort, gut barrier integrity, and immune defence.

What is 2-FL?

2-FL is a human milk oligosaccharide, often shortened to HMO. HMOs are specialised prebiotic compounds that help feed beneficial gut bacteria and support a healthy gut environment.

Is 2-FL the same as a probiotic?

No. 2-FL is not a probiotic because it does not contain live bacteria. It is a prebiotic, meaning it helps nourish beneficial bacteria already present in the gut.

What makes 2-FL different from regular fibre?

2-FL is a targeted prebiotic rather than a general fibre powder. It is used to support specific gut bacteria, microbiome resilience, gut barrier function, and immune-related gut signalling.

Can 2-FL support gut barrier integrity?

Yes. 2-FL is formulated to support gut barrier integrity and overall gastrointestinal balance, making it useful for people focused on gut resilience and microbiome support.

Can 2-FL support immune health?

Yes. Because the gut plays an important role in immune function, 2-FL may support immune defence by helping maintain a healthier gut microbiome and gut barrier.

How should adults take 2-Fucosyllactose?

The common dosage range is 5–20 g daily, or as advised by a healthcare practitioner. Start low, such as 1.25 g or 2.5 g, to assess tolerance before increasing.

How do I measure 2-FL powder?

The product density is listed as 5 mL equals 2.5 g. Each bottle includes scoop and density information to help calculate the desired dose.

Does 2-Fucosyllactose contain excipients or allergens?

No. RN Labs 2-Fucosyllactose is pure 2-FL powder with no excipients. It is suitable for vegans and is free from gluten, dairy, soy, nuts, and artificial additives.

Are there any important cautions with 2-Fucosyllactose?

2-Fucosyllactose is for adult use or as advised by a healthcare practitioner. Start with a low dose to assess tolerance. If symptoms persist, worsen, or change unexpectedly, consult your practitioner. Store below 25°C in a cool, dry place and keep tightly sealed away from moisture.