Wondering how to prevent constipation when travelling? You’re not alone — it’s one of the most common gut complaints I hear in clinic, and one of the most preventable.
In this episode, I’m sharing exactly what I pack to keep my gut moving when I travel, what the whole family takes, and why every single choice is backed by research.
Whether you’re someone who has no issues at home but completely shuts down the moment you board a plane, or someone who already deals with sluggish bowels and knows travel makes things significantly worse — this one is for you.
It doesn’t have to be complicated. There is a lot you could take when you travel for gut support. But if I had to strip it back to the bare minimum — these are the things I would never leave home without.
Why Does Travel Wreck Your Gut?
Your gut is essentially a creature of habit. It runs on routine, circadian rhythms, familiar food, adequate movement, and a stable nervous system. Travel disrupts all of these — simultaneously. Which is why the bowel often rebels.
The main drivers I see clinically include:
- Inactivity — long flights, car journeys, hours of sitting significantly slow gut motility. Movement is one of the most important drivers of bowel regularity, and travel removes it for hours at a time.
- Dietary changes — airport and airline food tends to be low in fibre, high in refined carbohydrates, and lacking in the plant diversity your microbiome relies on.
- Dehydration — cabin air is notoriously dehydrating, and people often reduce how much they drink to avoid using aeroplane bathrooms. Without adequate hydration, the colon absorbs more water from stool, making it harder and drier.
- Sleep disruption and jet lag — your gut runs on a circadian rhythm just like the rest of your body. Time zone changes and disrupted sleep alter the timing of bowel contractions. When the body wants to go at 3 am local time, and you suppress that urge, stool gets harder and the reflex weakens.
- Stress — the anticipation of travel, navigating airports, and being out of your normal environment all activate the stress response, which directly impacts gut motility via the gut-brain axis.
- Pathogens — occasionally, people pick up bacteria, parasites, or other organisms while travelling that can disturb gut function in multiple ways, including constipation, diarrhoea, or an alternating pattern of both. This is more common than people realise and worth being prepared for.
How to Prevent Constipation When Travelling: My Gut Travel Toolkit
Starting 7 Days Before Travel — GOS (Galacto-oligosaccharides)
The whole family starts taking GOS seven days before we travel. There is really good randomised controlled trial evidence showing that B-GOS — taken from around five to seven days before travel and continued throughout the trip — can significantly reduce both the incidence and duration of traveller’s diarrhoea, and it does this without antibiotics and without any significant side effects.
The studies used a specific form called Bimuno. So if you can get your hands on that, great — but if not, a good quality GOS supplement will serve you well.
What I find particularly interesting — and this is the part that really excites me as a clinician — is that GOS also supports gut motility. So we’re not just protecting against diarrhoea. We’re also supporting the bowel to keep moving. It does this by acting as a prebiotic, feeding beneficial bacteria, increasing short-chain fatty acid production, and improving stool consistency and transit time.
GOS is doing double duty before you even board the plane.
Important note on dosing: Some people are sensitive to prebiotics initially and can experience bloating or gas if they jump straight to a full dose. Start at a lower dose and gradually titrate up over those seven days before travel. This gives your gut microbiome time to adjust.
⚠️ Who should not take GOS without guidance: If you have active or suspected SIBO, GOS may not be appropriate for you. Please speak with a qualified, gut-informed naturopath or practitioner before adding prebiotic fibres to your protocol.
Daily Throughout Travel — PHGG (Partially Hydrolysed Guar Gum)
PHGG is one I take every single day, travel or not. It is a water-soluble, non-gelling prebiotic fibre that dissolves completely in water, a smoothie, or a coffee — you don’t even know it’s there. Incredibly easy to pack and take on the road.
The research on PHGG for bowel regularity is strong. It supports colon transit time — particularly in people with slow transit — feeds beneficial bacteria including Ruminococcus and Faecalibacterium, and supports short-chain fatty acid production. And crucially, it does all of this without the bloating you can get from other fibres. I take around 5g once daily.
Every Evening — Magnesium Bisglycinate
Magnesium is one of the most underappreciated tools for bowel support, and travel is exactly when you need it most. Magnesium draws water into the intestinal lumen, softening stool and stimulating gentle peristalsis — the muscular contractions that move things through. Low magnesium intake is genuinely associated with higher constipation prevalence.
My preference is bisglycinate — it has superior bioavailability, is gentler on the system, and offers additional nervous system support, which is particularly relevant when stress is already a factor. In some cases, I may also recommend magnesium citrate — also well absorbed with good evidence for bowel support. The form I recommend always depends on what’s going on for you individually. I take it in the evening with a large glass of water.
Twice Daily — BetterMe Tea
My own formulation — and honestly, I would be lost without it when I travel. BetterMe Tea contains organic ginger root, aniseed, liquorice root, and cayenne pepper. These are herbs that have been used traditionally to support digestive comfort, and the blend may help support healthy bowel function when your gut is out of its element.
I have two cups daily when I travel — one during the day and one before bed. It’s a simple, warming ritual that helps signal to my gut that it’s time to rest and digest, even when everything else around me is out of routine.
Always — The Free Non-Negotiables
Water. I aim for 2–3 litres daily when I travel — more on flying days. Dehydration is one of the most easily addressable drivers of travel constipation and one of the most commonly overlooked.
Movement. On long flights I get up and walk the aisle regularly. At my destination, a daily walk is non-negotiable. Research shows that even 20–30 minutes of moderate movement daily can support gut motility — a meaningful advantage when your routine is disrupted.
The Recap
- 7 days before travel: GOS — to protect against traveller’s diarrhoea and support motility. Start low and titrate up. Bimuno is the preferred form if you can find it.
- Daily throughout travel: PHGG — for gentle, research-backed bowel regularity without the bloat.
- Every evening: Magnesium bisglycinate (or citrate) — to soften stool and support gentle peristalsis.
- Twice daily: BetterMe Tea — one during the day, one before bed.
- Always: 2–3 litres of water and daily movement.
When Does Travel Constipation Need Professional Attention?
If travel consistently wrecks your gut — or if you’re dealing with constipation that travel just makes worse — there is likely an underlying driver worth investigating. Travel is a stressor, and it tends to amplify what’s already there.
Things like SIBO, gut microbiome dysbiosis, pelvic floor dysfunction, and stress-gut dysregulation are all common contributors that don’t resolve on their own just by coming home.
THIS EPISODE IS FOR YOU IF…
- Your bowels slow down or shut down completely every time you travel
- You already deal with constipation at home, and travel makes it significantly worse
- You want a simple, evidence-based toolkit — not a complicated protocol
- You’ve tried the usual advice (drink more water, eat more fibre) and it’s not enough
- You’re ready to understand what’s actually driving your gut to struggle when you’re away
Research referenced in this episode:
1. Drakoularakou A, Tzortzis G, Rastall RA, Gibson GR. A double-blind, placebo-controlled, randomized human study assessing the capacity of a novel galacto-oligosaccharide mixture in reducing travellers’ diarrhoea. Eur J Clin Nutr. 2010;64(2):146–52. doi: 10.1038/ejcn.2009.120
2. Hasle G, Raastad R, Bjune G, Jenum PA, Heier L. Can a galacto-oligosaccharide reduce the risk of traveller’s diarrhoea? A placebo-controlled, randomized, double-blind study. J Travel Med. 2017;24(5):tax057. doi: 10.1093/jtm/tax057
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Connect with gut health naturopath Lynda Griparic: Instagram
As a naturopath with extensive experience in complex gut health conditions, I offer telehealth consultations across Australia and internationally. If travel consistently disrupts your bowels — or if constipation is something you deal with at home too — I would love to help you work out why. This is exactly the kind of work I do.
If you have a gut health question you’d like answered or would like to discuss your situation, email info@lyndagriparic.com or leave a comment below.
This content is for educational purposes only and is not intended as medical advice. Please consult your healthcare provider before making any changes to your diet or health routine.