About Wander Gut: who we are, what we sell, and how we check what we publish

Who is behind Wander Gut

Wander Gut was started by Jay Mercer after a honeymoon that did not go to plan. The short version is the one on the homepage, and it is the honest one: years of planning and saving, and then a few days of the trip lost to feeling rough.

I spent years planning and saving for my honeymoon. Then I lost a few days of it feeling rough. That's what inspired Wander Gut: I wanted something I'd actually trust to pack, a clean, high-strength formula with nothing hidden in the label. That's exactly what's in the bottle.

What came out of that was less dramatic than a mission statement. It was a shopping trip. Looking for something sensible to pack meant reading a lot of labels, and the labels were the problem: proprietary blends that would not say which strains were in them or how much of each, bottles that needed a fridge, which is exactly what you do not have on a trip, and single strains at strengths nobody would print.

So the brief for the formula was written as a set of refusals rather than a set of promises. Name every strain and print its count. Make it shelf-stable so it survives a day pack in 30 degree heat. Keep the routine to two capsules a day, because a routine only survives travel if it is simple enough to do on a 4am airport morning. That is what the next section is about.

This is a small operation rather than a house brand for a larger supplement group, and the main advantage of that is who answers the email. Write in about a page and the reply comes from the person who wrote it, which is why the corrections policy at the bottom of this page is a real one rather than a form.

What we sell, in full

One product. Not a range, not a different formula for every destination, not a subscription you have to phone someone to leave. Wander Gut is a daily travel probiotic: 60 billion CFU across five strains with prebiotic Inulin FOS to feed them, 60 capsules a bottle, which is 30 daily servings at the labelled two a day.

This is the full active list, exactly as printed on the shop page and on the bottle. There is nothing behind it: no blend with the amounts withheld, no proprietary matrix, no strain we have decided not to name.

What the routine is for is written plainly on the shop page and at more length in probiotics before travel: daily gut support through new foods, long flights and a changed routine. Always read the label and follow directions for use.

The four decisions inside that label

Each of those choices costs something, and each one is a reason somebody else's bottle is cheaper than ours.

None of those four is a claim about what will happen to you. They are decisions about what goes in a bottle and what gets printed on it, which is the only part we control.

Why a company that sells a supplement gives away a Bali guide

There is a straightforward commercial answer and we would rather say it out loud than have you work it out. People search for what to pack, whether the water is safe, how much cash to bring and which area to stay in months before they search for anything to take with them. If our answers to those questions are the best ones on the internet, some of the people who read them will remember who wrote them. That is the entire model, and it only works if the answers are genuinely good.

What follows from that is a set of rules we hold ourselves to more tightly than we need to:

• The guide is free and stays free. No email wall on the guide pages, no chapter held back, no sequence of emails you have to unsubscribe from to read the next bit.
• The tools are free and ungated too. The Bali belly quiz, the trip checklist, the cash calculator, the itinerary builder, the area quiz and the month planner all run to the end without an address. Each one then offers to email you your result, which is an offer, not a gate.
• No affiliate links, anywhere. Not on a hotel, not on a tour, not on a SIM card, not on a piece of luggage. There is not a single tracked commercial link on this site.
• Nobody has paid for a place in the guide. No hotel, villa, tour operator, clinic or agency has paid for a mention, a listing, a ranking or a link, and we do not sell those.
• We do not sell your email address. Our privacy policy says it in one line: we do not sell your personal information. The list exists so we can send you the thing you asked for.

The one thing we do ask is that you know what this site is. It is a shop that publishes a guide, not a magazine that happens to sell something. You will find the product at the foot of most pages, clearly marked, and never in the middle of advice about being unwell.

How we check what we publish

Bali content has a particular problem: the same numbers circulate for years with no origin. Visa fees that changed two years ago, a levy amount somebody rounded, a statistic about how many travellers get sick that traces back to nothing you can open. Every one of those gets copied because copying is faster than checking.

So we work to five rules, and you can audit all five on any page of this site:

• Primary sources only. A government page, a regulator's register, a central bank rate, a meteorological agency's own data. Not another blog's summary of one, and not an AI's recollection of one.
• A date on every fact. Every page says when it was checked at the top, and lists each source with the date we read it at the bottom. A rate or a rule you can see the age of is worth more than one presented as timeless.
• If we cannot verify it, we leave it out and say so in public. Several pages end with a line naming exactly what we dropped and why. Two Balinese festival dates are missing from the month planner for that reason: we could not find them on a government calendar, so they are not there.
• We quote rather than paraphrase when the wording matters. Government travel advice and our own label directions appear as quotes with a link back, so you can check we have not softened anything in the retelling.
• We correct things, and the date moves when we do. Corrections are not quietly edited in. The checked date changes, which is the only way you can tell a page has been maintained rather than published and abandoned.

The sources we lean on most are the Australian Government's Smartraveller advice for Indonesia, BMKG (Indonesia's meteorological agency) for climate normals, the Reserve Bank of Australia for exchange rates, and the Australian Bureau of Statistics for travel numbers. Where a page relies on one of them, it is named and dated at the bottom of that page rather than alluded to.

None of this makes us an authority on Indonesia. It makes us a business that shows its working, which is a lower bar and a far more useful one for you.

What we will not tell you

We sell a supplement in Australia, and there are things a supplement is not permitted to say here. There are also things we would not say even if the rules allowed it, because they are not true and you would find out on your trip. The notice that runs at the foot of every page on this site is the plainest version of both:

This product is not intended to diagnose, treat, cure or prevent any disease. No supplement can guarantee prevention of traveller's diarrhoea or travel-related stomach upset. Wander Gut is not a replacement for safe food and water habits, medical advice, or travel insurance.

And our own answer to the question people actually type into Google is on the homepage and the shop page. It starts with one word:

Does Wander Gut prevent Bali belly? No. No supplement can guarantee prevention of traveller's diarrhoea or travel-related stomach upset. Wander Gut is designed to support digestive balance as part of a sensible travel routine.

So you will not find a sentence on this site that puts the bottle next to an illness. What you will find instead is the food and water advice that does the heavy lifting, the government pages it comes from, and a daily routine described in the words that are on the label. If another site offers you more certainty than that, weigh the rest of what it tells you accordingly.

The business behind the website

Wander Gut is a registered Australian business name and has been trading under it since May 2026. The registered business details are published in full on the contact page and repeated at the foot of the privacy, shipping and refunds pages, so you can check who you are buying from before you buy anything.

The rest of the operating detail lives on the pages that are meant to hold it, because a policy page is where you should be able to find it rather than in a paragraph on an about page:

• Where it ships from and how long it takes: within Australia, 3 to 5 business days, free on orders of 2 bottles or more. The detail is on shipping and delivery.
• Returns: unopened bottles within 30 days of delivery, on top of your rights under Australian Consumer Law, which nothing on this site tries to sign away. The detail is on refunds and returns.
• Payments: handled by Stripe, so full card details never touch our site. Prices are shown in Australian dollars.
• Your personal information: handled under the Australian Privacy Principles, set out on the privacy policy, including how to ask for a copy of what we hold or have it deleted.
• Reaching a person: hello@thewandergut.com, with the postal address for formal notices on the contact page. We answer email, and it is the same person either way.

Telling us we got something wrong

If a number on this site is out of date, a link is dead, a rule has changed or a recommendation reads as unwise to somebody who lives there, tell us. Email hello@thewandergut.com with the page and what is wrong, and a sentence on where you saw better if you have one.

What happens next is the same every time. We go to the primary source rather than to the argument. If the source says you are right, the page changes and the checked date at the top moves with it, so the correction is visible rather than silently folded in. If the source says something else, we will tell you what we found and where, and the page stays as it is.

This matters more on a site like this one than on most. We are a shop writing about health-adjacent travel questions, which is exactly the kind of publisher a reader should be sceptical of. The answer to that is not to insist we are trustworthy. It is to make everything checkable and then invite you to check it.