Last Updated: Jan 29, 2019  |  Download my Leaky Gut Recovery Guide

The #1 question I get from you lovely readers is…

“Richard, I’ve read about dozens of different supplements that can help with leaky gut.  And seen literally 100s of different brands to choose from.

I don’t have time to study them all and work out what’s best. So give it up you intestine-obsessed health nut…what are the ‘must have’ supplements?”

And it’s a great question!

After all, if you Google “leaky gut supplements” you’re going to be hit by 1000s of sites proclaiming they know what works.

From general health sites to low quality news sites, the Internet is awash in articles like “3 newly discovered Amazonian berries that can heal your gut”.

Give me a break!

Not only do these sites NOT specialize in leaky gut, butthey don’t even specialize in gut health in general.

If you asked them what microvilli* are, they’d think you were talking about the latest Avengers’ sequel: Microvilli War, The Endgame!

*FYI – They are hairlike projections along your small intestinal wall that dramatically increase surface area and thus nutrient absorption.

(A useful factoid for your next trivia night!)

This lack of expertise about supplements & leaky gut is a BIG problem

And that’s because leaky gut requires a very unique set of supplements, as well as specific rules for taking them, eg which form of that supplement to take, how much etc.

For example, prebiotics may help, but typically only specific types of prebiotics can be tolerated in the early stages of gut healing.

Even then, the dose protocol has to be smartly thought out so as not to create excess gas and bloating, or the proliferation of bad bacteria.

So when it comes to leaky gut and supplements, it is all about expertise!

And with over 150,000 words published on leaky gut, I feel best placed to deliver this to you.

But hang on, why do we actually need supplements for gut health?

Before we look at the best supplements (PDF download here), it’s worth actually pausing to answer this question.

After all, in order to work out which supplements are best for us, we of course need to be clear on why we’re taking them in the first place.

So for those of us with leaky gut issues, I would say there are 3 main reasons why we are interested in supplements…

1) Help us digest our food better

You see, if we can properly break down the food we eat, we’ll be able to better absorb the nutrients in it (hello delicious amino acids, essential fatty acids, vitamins etc).

And since food is medicine, this improved absorption can in turn help our gut to heal.

Plus, better digestion can help reduce the number of large undigested food molecules from making their way down to our small intestine and bombarding our GI tract.

And with less irritation, we can hope to enjoy a stronger intestinal wall and thus less permeability issues (ie less leaky gut).

2) Support our intestinal wall

If we can nourish our wall/lining and keep it strong, we can directly reduce leaky gut, which means…

…we can help our body keep the bad guys out of our bloodstream (eg toxins, undigested food molecules etc), whilst simultaneously letting the good guys in (eg nutrients).

You see, in an ideal world your gut lining should be like the wall in Game of Thrones. (circa season 4 when it actually worked!)

i.e. it should be permeable (ie have some small openings/holes), so that the good guys can come and go as they please.

But not so many holes that it starts to let the big bad guys through as well – hello toxins and undigested food molecules (aka the White Walkers of digestive health!)

To help us achieve this, we want to make sure our intestinal lining is being supported with the nutrients/fuel it craves, as well as an army of their protective friends, like a strong mucus layer.

3) Help our gut bacteria, aka microbiome

Since our bacteria can influence our digestion, gut wall integrity, as well as a slew of other functions, such as yeast balance, this is the third big goal.

And the two major things we can do here is send down more of the good guys (good bacteria/probiotics), and send down more food for them (prebiotics).

If you’re starting to feel like your gut really is like a Game of Thrones war zone, and we need to send it all kinds of support, you’d be just about right.

Can’t food and drinks give us this support?

Food and drinks are, and always will be, the #1 source of our support.

From collagen-rich bone broth to probiotic-packed sauerkraut, they are the foundation of our gut health.

But supplements can be extremely handy as an additional source of support, since they’re often much easier to take.

For example, compare having to ferment sauerkraut for weeks and then needing to eat a small bowl of it each day, versus simply popping 1 capsule of a probiotic supplement daily.

The latter requires no prep or cooking, takes 5 seconds and is tasteless.  Easy as!

Also, supplements are really good at giving us some room for error.  A type of insurance policy if you like.

For example, if we take digestive enzymes with lactase enzymes (for digesting lactose sugar in dairy) and peptidase enzymes in DPP-IV form (for digesting gluten and casein protein in say pasta and dairy respectively), then we can eat a little naughtier now and then, and not feel so bad.

Pretty cool!

So although food & drinks are always #1, supplements are an extremely useful lil helper to have around.

Without further ado…

Say hello to the leaky gut supplements pyramid

Finally, the top 15 supplements for leaky gut revealed AND ranked on one page!

Best leaky gut supplements

Here’s how I’ve broken the pyramid up

1) Level 1 – Must haves

These are the supplements I take no matter what.

And that’s because they have the most direct impact on our gut health (especially intestinal lining), are hard to get from our food, give the best bang for buck, and of course, are backed by the most studies.

Only 3 fit the bill!

  • L-Glutamine powder – 5 g with 8 oz (240 ml) water, taken 1-3 times a day away from meals
  • Digestive enzymes – 1 capsule of a powerful, plant-based, broad spectrum enzyme complex with each main meal
  • Probiotics – 30-50 billion CFUs with 10-12 quality strains, and delayed release capsule, per day

You’ve no doubt heard about all 3, and you probably already take some of them.  They truly are the superheroes!

2) Level 2 – Good if budget allows

There are some fantastic supplements in this level of the pyramid.  Roughly 8 in total.

  • Betaine HCl with pepsin – 500-1,000 mg of HCl with 10-20 mg pepsin, with a protein-based meal
  • Collagen protein – 10-30 g of hydrolyzed collagen peptides (most bioavailable version)
  • Prebiotic powder – 5-25 g low FODMAP prebiotics, inc resistant starch, eg green banana flour (start small)
  • Zinc & magnesium – 10-20 mg of zinc and 200-400 mg of magnesium
  • Omega 3 fatty acids – 1,000-2,000 mg of omega 3s, eg 2 capsules of triple strength fish oil
  • Vitamin D with K – 2,000-5,000 iu vitamin D3 with 50-100 mcg vitamin K2 (MK7)
  • Demulcent plants – My favorites – 500 mg DGL licorice, 200 mg slippery elm, 100 mg marshmallow root, 100 mg aloe vera

But since no one has the time or money to take all of them, I’ve specified criteria and questions to ask yourself to determine what makes sense for you (which you can find further down this article).

This is super important for making your supplement protocol realistic (and something you’ll actually stick with).

3) Level 3 – Experiment someday/maybe

This is a collection of interesting supplements that could help, but whose efficacy data is nowhere near as solid as supplements in Levels 1 and 2.

  • N-Acetyl-Glucosamine – 200-500 mg NAG (derived from shellfish)
  • Quercetin – 100-200 mg, preferably in dihydrate form
  • Colostrum – 1-3 g away from meals (start small)
  • Curcumin – 500-1,000 mg of curcuminoids (see label)

In other words, they’re worth looking at ‘someday’ if you’ve tried all the others and are still not feeling great.

4) Level 4 – For specific issues only

Only worth considering if you are trying to tackle a very particular issue.

eg parasites or yeast overgrowth etc.

How to decide which supplements to take

I know supplements can be expensive and time consuming to take.  And I don’t want you to waste your money or time.

So the team and I were extremely diligent in our research and in reaching consensus.

In the end, we actually managed to order every supplement in the pyramid from most important to least, so you know exactly what to pay most of your attention to.

And it took days and days of work with my team of digestive health experts to build this pyramid for you.

You see, although there are a lot of terrible supplements out there, that do next to nothing for gut health (hello Amazonian berries!), there are quite a few that offer great support.

From mucus secretion promoters to intestinal lining feeders, it is a wild and wondrous world.  In fact, we started with a list of 73 worthwhile contenders!

Not only did I want to whittle the 73 down into just 15, but I then wanted to narrow it down even further to a simple top 3.

I don’t expect anyone to take all 15 after all!  Heck, even 3-4 supplements can feel like a lot.

So further below, I will also run through my very practical tips on “What to buy?”.

I’ve based these recommendations on efficacy data from 100s of studies, as well as my personal experience and the reports of 1000s of readers.

For example, you’ll see L-Glutamine powder – a simple 1-ingredient supplement – absolutely dominating the rankings.

It has many studies focused on intestinal permeability support, plus it is the #1 supplement readers have told me helped them the most – and the fastest.

How to decide which brands to buy

Finally, to make things even easier for you, I’ve noted below which specific brands to buy for each supplement, based on what I personally take.  And this is super useful!

Because if you simply go to Amazon or iHerb and search for something like “probiotics”, you’ll find yourself drowning in 100s of brands and left with all kinds of questions…

…eg how many billion CFUs is right, what strains do I need, how many, is encapsulation technology important, what about lacto v bifido v bacillus strains etc.

Enough overwhelm to turn even the most studious of probiotic lovers off.

How to take action and get your supplements routine down pat

1) Print off the pyramid poster above

This is the 3rd pyramid!  And just like with the food pyramid and drinks pyramid, it is worth printing out and sticking up somewhere visible.  It’ll serve as the perfect reminder and clarifier.

2) Shop your ‘favorites’ from Levels 1 & 2

Unlike food and drinks, it can be a bit hard to say which are your ‘favorites’.

For example, no one is running around like a collagen-crazed cookie monster screaming “Ooooh, I love the taste of hydrolyzed collagen, me want peptides!”.

So to help you narrow in on the best supplements to shop for, I’ve made a quick guide below.  Some notes about the guide:

  • ‘Must Haves’ – I’ve focused on the supplements from the pyramid that have the most direct impact on our gut health (especially intestinal lining), are hard to get from our food, give the best bang for buck, and of course, are backed by the most studies.   These are my personal must haves.
  • ‘If Budget Allows’ – There are some fantastic supplements here.  But since no one has the time or money to take all of them, I’ve specified criteria and questions to ask yourself to determine what makes sense for you. This is super important for making your supplement protocol realistic.
  • Where to buy – I’ve included Amazon links for all products, because there is no easier way to buy multiple products from different brands.  Plus many brands are also available on Amazon internationally (CA, UK,  EU, AU).
  • ZERO affiliate links – every product I link to is simply the one I use each day, and some of them I was also a part of the formulation team for.  So not only do I love these supplements, but some of them are even my babies.

3) If desired, experiment with Levels 3 & 4

There are some interesting supplements at the top of the pyramid.  And they can be worth experimenting with if your doctor or healthcare professional thinks they could help with a specific issue.

But I personally would focus on Levels 1 and 2 before devoting money and effort to trying Levels 3 and 4.

The 3 must have supplements – my favorites

With 15 supplements making the pyramid, it can be hard to know which to buy.  Here are my 3 favorites.

Unlike most of the other supplements, these three can help from day one and really support our intestinal tract from all angles.  They are my superheroes.

1) L-Glutamine

Just like protein powder feeds your muscles so they can repair and grow stronger, L-Glutamine fuels your gut lining so it too can repair damaged cells and come back healthier.

In fact, the cells lining your gut love L-Glutamine so much that they’re able to absorb it directly, making supplementation very effective.

I’m proud to recommend my company Essential Stacks’ Clean L-Glutamine, because it has 5 g of free form L-Glutamine per serve, plus no fillers, no sugar & no nasty stuff.  I love it!

And so must you lovely readers, as it is now our #1 most popular supplement.  Thank you for showing the love!

2) Digestive Enzymes

These hard working little guys take the food we eat and break it down into individual nutrients so our body can actually absorb the amino acids, vitamins, minerals etc from our food.

This is super important for those of us with leaky gut, because our damaged gut lining is likely to not be absorbing nutrients properly, and yet needs the nutrients to repair itself.

So enzymes can help get us out of the vicious cycle.

Plus, by digesting food better, enzymes also reduce the number of large undigested food molecules from making their way down to our small intestine and bombarding our GI tract.  Making them a fantastic double win!

Check out Pure Enzymes – it is a broad spectrum blend of 18 different digestive enzymes, making it great for all types of meals.  This can be a true game changer.

3) Probiotics

One of the most interesting roles probiotics can play is their ability to fight leaky gut by enhancing the production of tight junction proteins, i.e. helping to strengthen our intestinal barrier.

In addition, they can help to fight off two of the main culprits of leaky gut, being bad bacteria and yeast overgrowth.

Love them!

If you’re looking for a professional-grade probiotic, try Smart Probiotic.  It is made with 11 of the best strains on the market and packs a whopping 50 billion CFUs of good bacteria per capsule.

Supplements to consider if budget allows

These are the next best supplements in the pyramid.  Very helpful, but only if you have the time & money.

With several options here, please talk to your doctor to determine what makes the most sense for you personally.  Here are some quick thoughts.

1) Betaine HCl

Experiencing the occasional food baby, aka bloating?

Consider Thorne’s Betaine HCl with Pepsin.  A beautiful way to support digestion where it starts (in the stomach).  Best for meals with protein.  Experiment with dose titration.

2) Collagen Peptides

Sick of drinking bone broth?

Try Sports Research Hydrolyzed Collagen Peptides. It is a bovine-based bioavailable source of collagen that is easy to mix in water and drink any time.  Great way to further feed & repair our GI tract.

3) Prebiotics

Struggling to eat enough prebiotic foods, especially resistant starches?

Try Natural Stacks Prebiotic+.  Unlike most prebiotic powder supplements, ~95% is from low FODMAP green banana & potato starch.  Start with small servings!

4) Zinc & Magnesium

Low on zinc and magnesium?

Most people are when their digestive system is suboptimal, so a 2-1 supplement like Rootcha’s Mag-Zinc combo can be helpful.

5) Fish Oil

Not eating omega-3 rich fish every day?

Try my company Essential Stacks Triple Strength Fish Oil.  With a no-reflux formula, this is an easy way to get your omega 3s, which can support optimal intestinal permeability via better tight junction function, increased bacterial diversity and reduced inflammation.

6) Vitamin D

Finding it hard to get some daily sun?

Consider our Vitamin D3 with Vitamin K2.  It has a smartly balanced amount of D3 for daily use and the K2 helps with absorption & distribution of the Vitamin D.  With similar inflammation fighting and tight junction function support as fish oil, your gut will love this lil guy.

Being realistic about supplements

I know supplements can be expensive and time consuming to take.  And I don’t want you to waste either your money or your time.

So the team and I were extremely diligent in our research and in reaching consensus.

We based our recommendations on efficacy data from 100s of studies, as well as my personal experience and the reports of 1000s of readers.

And as you saw, we whittled a list of 73 contenders down to just 15 and then whittled it even further to a top 3 – the must haves, which you can checkout here, here and here.

That means you can now see what to prioritize and what you can simply put on your ‘someday, maybe’ list.

So pick the best and forget the rest!

And most of all, speak to your doctor or healthcare professional to ensure each supplement makes sense for you personally.


Want a simple solution for your leaky gut that actually works?

Stop Googling till 3am, reading dozens of blogs or buying expensive courses. Instead, just download my FREE leaky gut recovery guide (PDF) below. Everything you need to know to is in this simple step-by-step guide.