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Synbiotic Complete
★★★★★
Rated 4.7/5 by verified buyers

The 3-in-1 Formula That Helps Your Gut Send Its Own Fullness Signal

Prebiotics to feed your good bacteria, 8 clinically studied probiotic strains, and TriBiome™ postbiotic – the acetate built to reach your colon.

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30-Day Money-Back Guarantee · Free Shipping on 3 & 6 boxes · Cancel, skip, or pause anytime

Doctor Recommended Third-Party Tested No Compromises No Unnecessary Fillers Vegan Made in USA
350+ human clinical trials behind the ingredients  ·  180% potency overage

If You’ve Read My Article, You Already Know This

(And if you haven’t... here’s the short version.)

Feeling full was never really about willpower. It’s a hormonal signal, carried by GLP-1 and PYY... and a lot of that signal is switched on way down in your large intestine, by what your gut bacteria produce when they’re properly fed.

And the keystone bacteria among them don’t just make short-chain fatty acids... they put one to work as a raw material: acetate. The catch? The acetate in food and drink (yes, including your apple cider vinegar) is mostly absorbed high up in your digestive tract, so very little of it reaches your colon, where those bacteria could actually use it.

So I worked with our formulator to build what I felt should have existed already: a single formula that feeds the system from all three angles at once, including a postbiotic form of that fuel designed to survive the journey and reach your gut bacteria intact.

Meet Synbiotic Complete

The 3-in-1 that feeds your fullness signal: prebiotics, 8 clinically studied probiotics, and the TriBiome™ postbiotic built to reach your colon.

Synbiotic Complete packaging Synbiotic Complete blister pack

It’s the one I’d take if I could only take one.

It’s a true 3-in-1: prebiotics to feed your good bacteria, 8 clinically studied probiotic strains each chosen for a specific job, and a postbiotic layer most formulas skip entirely.

Over 350 human clinical trials have been conducted on the ingredients in this formula. Not lab studies. Not animal studies. Human trials. That’s the foundation we built on.

The Postbiotic

TriBiome™: The Fuel That Finally Reaches Your Gut

TriBiome postbiotic

This is the piece almost every other formula leaves out, and it’s the one I’m most excited about.

TriBiome™ is a patent-pending, bioavailable form of acetate, one of the short-chain fatty acids your gut bacteria depend on. Unlike the acetate in vinegar (which gets absorbed long before it arrives), TriBiome™ is designed to reach your colon intact, where your keystone bacteria actually live.

Once it’s there, it becomes fuel for your butyrate-producing bacteria... the workhorses that help digest fiber, support your gut lining, and keep things calm. And here’s the part that ties back to appetite:

1

It reaches your colon

TriBiome™ is designed to reach the large intestine intact, delivering acetate where the acetate from food simply can’t.

2

It feeds your keystone bacteria

That acetate becomes fuel for the butyrate-producing bacteria behind a calm gut, a supported gut lining, and steady digestion.

3

It supports your own fullness signal

Research suggests this process helps support your body’s natural production of GLP-1 and PYY... the hormones that tell your brain you’ve had enough (Freeland & Wolever, 2010).*

And here’s the part I find amazing. That acetate doesn’t just stay in your gut. Some of it travels all the way up to your brain... to the very centres that decide whether you still feel like eating. Research suggests that’s one more way it helps quiet the “keep going” signal (Frost et al., 2014). So it’s working at both ends: down in your gut, where it helps trigger those fullness hormones, and up in your brain, where the message is finally heard.

Prebiotics feed. Probiotics work. Postbiotics deliver.

Holding Synbiotic Complete daily probiotic

*This product is not intended for weight loss. These statements have not been evaluated by the Food and Drug Administration.

The Order Your Gut Tends to Change In

It rarely happens all at once. Here’s the pattern we hear most often.

The First Few Days

As the strains get going, you may notice mild digestive changes. That’s normal... it’s the probiotics getting to work and beginning to rebalance your gut.

The First Few Weeks

Many people notice the early wins here: less bloating, more regular digestion, and a steadier energy through the day without the afternoon crash.

Three Months & Beyond

This is where the prebiotic and TriBiome™ postbiotic have had time to do the deeper work... a calmer gut, a steadier appetite, clearer skin, and the kind of head-to-toe difference that comes from supporting the system, not just chasing symptoms.

This is why most people choose the 3- or 6-box protocol. The first box settles things down. The second and third are where the real change tends to happen... because your microbiome needs to be supported consistently, not once in a while.

★★★★★

“As someone who works in clinical research, evidence-based treatments matter to me. After taking these for a short time, I noticed significant improvements in my bowel function and a reduction in bloating... two issues I had struggled with previously.”

– Frauke C. · Verified Buyer
Doctor Recommended
Dr. Peter Bongiorno
“Synbiotic Complete is packed with scientifically-backed bacterial strains that effectively navigate the gut, alleviate digestive discomfort, and restore a harmonious flora. Choose Synbiotic Complete to pave the way for a healthier you.”

Dr. Peter Bongiorno, ND

Naturopathic Physician, Textbook Author, Lecturer

The 8 Clinically Studied Strains

Your fullness signal comes from the acetate-and-SCFA mechanism we just walked through, and the fermentable fiber that feeds it. These eight strains are something a little different... the whole-body gut-health team that keeps the whole system running.

Each one has a job (in bold, so you can scan it in five seconds), and each is included at a meaningful, research-informed dose (not the “fairy dusting” you find on poor-quality labels).

Synbiotic Complete with capsules
The Digestion Strain

Bifidobacterium lactis HN019

Bifidobacterium lactis HN019

Its job: support healthy digestion, and get things moving.

This is the strain in the formula with the most research behind it for digestion. It’s been shown to support regularity and a faster gut transit time (Waller et al., 2011)... which is why it sits right at the centre of the digestion side of the story.

The Immune & Barrier Strain

Lactobacillus rhamnosus HN001

Lactobacillus rhamnosus HN001

Its job: support your immune defences and your gut barrier.

HN001 is one of the most studied strains for immune support. It’s been researched for a healthy immune response and for the skin, and it helps look after the cells that line your gut wall. A calm, well-defended gut lining is where a lot of whole-body health begins.

The SCFA Producer

Bifidobacterium longum BB536

Bifidobacterium longum BB536

Its job: boost short-chain fatty acid production.

This strain ties straight back to the mechanism. BB536 is a bifidobacterium that helps make more short-chain fatty acids in the gut... the same compounds behind the fullness signal. That’s what we lean on it for: adding to the SCFA supply your gut actually puts to use.

The Superstar All-Rounder

Lactobacillus rhamnosus GG

Lactobacillus rhamnosus GG

Its job: calm the whole system.

If probiotics had a hall of fame, GG would be the first inductee... the most well-studied strain on the planet, across hundreds of human trials (Segers & Lebeer, 2014; Capurso, 2019). That depth of evidence is why it anchors this group. Calm the gut, and everything else starts to settle: clearer skin and steadier mood.

The rest of the team rounds out whole-body gut health, head to toe.

The Mood & Stress Soother

Lactobacillus paracasei LPC-37

Lactobacillus paracasei LPC-37

Its job: take the edge off stress (the kind that drives late-night snacking).

Your gut and brain are in constant conversation. LPC-37 has been studied for perceived stress and relaxation (Patterson et al., 2020)... in that research, people taking it reported feeling less stressed. When your stress response calms, those reach-for-the-cupboard moments tend to ease too.

The Respiratory Supporter

Bifidobacterium lactis Bl-04

Bifidobacterium lactis Bl-04

Its job: support your gut barrier and everyday defences.

Gut health and respiratory health are more connected than most people realise. Bl-04 supports healthy digestion while supporting your body’s natural defences and helping maintain gut balance during and after antibiotics. It strengthens your gut barrier and helps you bounce back faster.

The Balance Keeper

Lactobacillus rhamnosus Lr-32

Lactobacillus rhamnosus Lr-32

Its job: keep the troublemakers in check.

Think of this as your gut’s personal bodyguard. It helps maintain a balanced microbial environment, keeping opportunistic yeast in check and outcompeting less-friendly bacteria for space. Lr-32 claims room for the good guys.

The Women’s Health Champion

Lactobacillus acidophilus La-14

Lactobacillus acidophilus La-14

Its job: support women’s health, head to toe.

Chosen with women’s unique needs in mind. It enhances gut barrier function, supports nutrient absorption, and supports vaginal and feminine health. Head-to-toe support from the inside out.

The Prebiotic

The Fuel for Your Good Bacteria

Prebiotics

Think of prebiotics as the meal your probiotics are hungry for. Without them, even the best strains struggle to thrive.

And this is where the fullness story actually starts. Fermentable fiber is what your bacteria turn into those short-chain fatty acids in the first place... so feeding them well helps them make more of the very compounds behind your own GLP-1 and PYY (Nilsson et al., 2013).

We use Acacia gum, a gentle, broad-spectrum prebiotic fiber that nourishes a wide range of beneficial bacteria without the gas and bloating common to harsher fibers. We put in as much as we physically could. (Literally... any more and it wouldn’t fit in the capsule.)

It’s the difference between planting seeds in dry soil... and giving them everything they need to flourish.

Built to a Higher Standard so Every Dose Delivers

Probiotics are living organisms. And living organisms die. From the moment a probiotic is manufactured, the bacteria begin to decline. Most brands measure their counts “at time of production”... so by the time it reaches you, you might be getting a fraction of what the label promises.

180% Overage

We include 180% overage in every batch. That means if the label says 1 billion CFU, there’s actually 2.8 billion in there. We guarantee potency for the entire shelf life, up to two years from manufacturing. Even if you take the last capsule right before expiry, you’re still getting a research-informed dose.

Blister Pack Protection
Aluminium blister pack protection

Each capsule is sealed in its own individual aluminium blister pack, protecting it from heat, light, and moisture. No refrigeration necessary. Take them with you when you travel.

Third-Party Tested. No Proprietary Blends.

Every batch undergoes rigorous testing for purity, potency, and safety. And we don’t hide behind vague “proprietary blend” labels. You can see exactly what’s in the formula and exactly how much. Non-GMO. Vegan. No artificial fillers.

How Synbiotic Complete Compares

  Synbiotic Complete Typical Probiotic
8 clinically studied strains Often 1–2
Prebiotic fuel included
Postbiotic that reaches the colon
Clinically studied strains, meaningful doses “Fairy dusting”
180% overage for full shelf life
Vegan, no fillers, third-party tested Varies

Real Results From Real People

★★★★★

“I used to have occasional stomach and intestinal issues even with taking pre and probiotics. Since I’ve been taking Synbiotic Complete I feel so much better and have more energy.”

– Margaret C. · Verified Buyer
★★★★★

“My bowel habits have become more regular, without any straining. My digestion also seems to be more stable lately. The capsules are easy to take and don’t seem to upset my system in any way.”

– Jean S. · Verified Buyer
★★★★★

“I have been taking 2 capsules a day, and noticed an improvement immediately. Decreased gas and less discomfort when eating lactose and gluten items, to which I have sensitivities.”

– Lisa W.
Kay King with Synbiotic Complete
★★★★★

“I have had severe acid reflux or gastritis for years. Synbiotic Complete has completely removed those symptoms (when I don’t forget to take them)!”

– Kay King · Verified Buyer
Verified buyer's Synbiotic Complete and L-Glutamine
★★★★★

“After much research, I found a probiotic blend that had the specific strains a research specialist told me would be most beneficial for a leaky gut. Within the first few weeks, I noticed significant improvement. Before, I had diarrhoea so badly I couldn’t eat before going out, and no energy to exercise. Now I’m back at the gym and no longer fear that my outings could turn into a nightmare. I highly recommend this probiotic blend. Well done, Goodness Lover!”

– Verified Buyer (used alongside L-Glutamine)

What Our Community Is Saying

★★★★★
Rated 4.7 out of 5 by our verified buyers.

What’s Included When You Start Today

The formula, the naturopath support, and the education to make it all work.

Goodness Lover Inner Circle
Included with every tier

Goodness Lover Inner Circle

Unlimited naturopath Q&A · private community.

Ask our naturopath team anything about your gut, the protocol, what to expect, and get a personalised response from a qualified practitioner. Normally $47/month. Included with every tier, even the Starter.

The Microbiome Makeover cooking program
Included with 3 & 6 boxes · $197 value

The Microbiome Makeover

16 gut-healing recipes from Chef Camila Skaf.

Led by plant-based Chef Camila Skaf, a mainstay coach in our community, this program shows you 16 easy recipes with ingredients chosen to nourish your gut bugs and restore balance.

  • 16 delicious, gut-healing recipes the whole family will love
  • Ingredients specifically chosen to feed your good bacteria
  • Simple techniques that make healthy cooking feel effortless
28-Day Gut Restore Meal Plan
Included with 6 boxes · $247 value

28-Day Gut Restore Meal Plan

Breakfast, lunch, dinner – planned for you.

A full 4-week lineup of meal planning done for you, plus weekly shopping lists so you’re never without a key ingredient. Tasty, gut-repairing foods your whole family will love.

Choose Your Protocol

We’re able to offer this because we’d rather have you stay for a year at a fair price than sell you one box at full price and never see you again. Cancel, skip, or pause anytime.

Starter
1 Box
30-day supply · delivered monthly
1 Box Synbiotic Complete
$59.46/box
$69.95/box · just $1.98/day
Save 15%
  • Naturopath access · Inner Circle$47/mo value
  • 30-Day Money-Back Guarantee
  • Cancel, skip, or pause anytime
Then $59.46 every 30 days (15% off)
Subscribe & Save 15% →
Protocol
3 Boxes
90-day supply · delivered every 3 months
3 Boxes Synbiotic Complete
$55.96/box
$69.95/box · just $1.86/day
Save 20%
  • Plus
  • Microbiome Makeover Program$197 value
  • Naturopath access · Inner Circle$47/mo value
  • Free shipping
  • 30-Day Money-Back Guarantee
$244 in bonuses included
Then $167.88 every 90 days (20% off · $55.96/box)
Subscribe & Save 20% →

If I were to recommend one... it’s the 6-month. Longer consistent use gives your microbiome more time to adapt, and the 25% subscription rate is the deepest ongoing discount we offer.

All tiers: 30-Day Money-Back Guarantee · Cancel, skip, or pause anytime
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This is for you if...

Probably not the right fit if...

Look, I know you’ve probably tried things before. The single-strain probiotic that did nothing. The fiber that bloated you. The ACV shots that just made your kitchen smell like a chip shop. I get the scepticism. I’d be sceptical too.

30-Day Money-Back Guarantee

Try It Completely Risk-Free

Synbiotic Complete comes with our unconditional 30-day money-back guarantee. If you’re not completely thrilled, just send us an email and we’ll refund your purchase. No hassle, no hoops.

You have nothing to lose... except maybe that bloating and the frustration of probiotics that never seemed to work.

Sarah Otto
A Note from Sarah

I take this every single day. It’s the one I recommend to my own family.

The thing I hear most from people who start supporting their gut isn’t dramatic. It’s quiet. That low background hum of I could eat just... eases off. And every time I hear it, I think the same thing: for so long we’ve told people that if they can’t control their appetite, they just need to try harder. That’s not only unkind, it’s wrong. Your body is supposed to tell you when you’ve had enough. Sometimes it just needs the right support to be heard again.

Your body wants to heal. Don’t give up on it.

Sarah Otto
Nutritionist (Master of Human Nutrition)
Goodness Lover Co-Founder

FAQs

Q: What makes Synbiotic Complete different from other probiotics?

A: Most probiotics give you a random blend of bacteria and hope something sticks. Synbiotic Complete is a true 3-in-1: prebiotics to fuel your good bacteria, 8 clinically studied strains at meaningful, research-informed doses, and TriBiome™ postbiotic, a bioavailable acetate designed to reach your colon and feed the bacteria behind your own fullness signal.

Q: What exactly is in it? (full label)

A: We don’t hide behind “proprietary blends” – here’s every ingredient. Each capsule (60 per carton) contains:

8 clinically studied probiotic strains

  • Lactobacillus rhamnosus GG – 5 billion CFU
  • Lactobacillus acidophilus La-14 – 3 billion CFU
  • Lactobacillus paracasei LPC-37 – 3 billion CFU
  • Lactobacillus rhamnosus HN001 – 3 billion CFU
  • Bifidobacterium lactis Bl-04 – 1 billion CFU
  • Bifidobacterium lactis HN019 – 1 billion CFU
  • Lactobacillus rhamnosus Lr-32 – 1 billion CFU
  • Bifidobacterium longum BB536 – 500 million CFU

Plus the prebiotic and postbiotic layers

  • Triacetin (as TriBiome™) – 200 mg · the bioavailable acetate postbiotic
  • Acacia (gum) – 200 mg · the prebiotic fiber

Other ingredients: microcrystalline cellulose, vegetable cellulose (capsule), silicone dioxide, magnesium stearate, tapioca starch, tricalcium phosphate. Vegan, non-GMO, and free from artificial colours and preservatives.

Q: How does this relate to appetite and fullness?

A: Your body makes its own satiety hormones (GLP-1 and PYY), and a lot of that happens in your large intestine, driven by what your gut bacteria produce. Research suggests that feeding those bacteria the right fuel helps support your body’s natural production of those hormones. Synbiotic Complete is designed to support that process. To be clear, though: this isn’t a GLP-1 medication and won’t do what one does... those drugs deliver a strong, long-acting version of the signal, while this simply supports the gentler, natural one your body already makes. (It’s a gut-support formula, not a weight-loss product.)

Q: How do I take it?

A: Take one capsule twice a day – ideally one with breakfast and one with dinner – for a total of two capsules daily. A carton holds 60 capsules, so that’s a 30-day supply. Spacing the two doses across the day keeps a steadier supply of the good stuff reaching your gut. Consistency matters more than timing, though, so the best routine is the one you’ll actually stick to.

Q: How long until I feel a difference?

A: Everyone’s microbiome is different, but many people notice less bloating, more regular digestion, and steadier energy within the first few days to weeks. The longer you take it, the more the benefits compound, which is why we recommend the 3- or 6-box protocol.

Q: What’s “overage” and why does it matter?

A: Bacteria start dying the moment they’re manufactured. Most brands measure counts “at time of production,” so by the time it reaches you, you might get a fraction of the label. We include 180% overage so even the last capsule before expiry is a full, research-informed dose.

Q: Can I open the capsule if I have trouble swallowing pills?

A: Absolutely. Sprinkle the contents into water, yogurt (or a plant-based alternative), applesauce, or nut butter and consume immediately. Just avoid anything hot, which can damage the live bacteria.

Q: Can I take it with other supplements or medications?

A: It’s generally safe alongside other supplements. If you’re on medications, please check with your healthcare provider first. Our Inner Circle naturopath team is also there to answer your questions.

Q: Is it vegan and free from common allergens?

A: Yes. Synbiotic Complete is 100% vegan, non-GMO, and free from artificial additives, gluten, dairy, and soy. No fillers, no junk.

Q: What’s your refund policy?

A: We offer a 30-day money-back guarantee. If you’re not thrilled, email support@goodnesslover.com and we’ll refund your purchase. (Shipping charges aren’t refundable.)

A quick heads up: because of our meticulous sourcing, this formula can be slow to restock once a batch runs low. Starting with the 3- or 6-box protocol keeps your progress steady and unlocks your bonuses.
Start Your Protocol →
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References
  1. Freeland KR, Wolever TMS. Acute effects of intravenous and rectal acetate on glucagon-like peptide-1, peptide YY, ghrelin, adiponectin and tumour necrosis factor-α. British Journal of Nutrition. 2010;103(3):460–466. doi:10.1017/S0007114509991863.
  2. Chambers ES, Morrison DJ, Frost G. Control of appetite and energy intake by SCFA: what are the potential underlying mechanisms? Proceedings of the Nutrition Society. 2015;74(3):328–336. doi:10.1017/S0029665114001657.
  3. Frost G, Sleeth ML, Sahuri-Arisoylu M, et al. The short-chain fatty acid acetate reduces appetite via a central homeostatic mechanism. Nature Communications. 2014;5:3611. doi:10.1038/ncomms4611.
  4. Nilsson A, Johansson E, Ekström L, Björck I. Effects of a brown beans evening meal on metabolic risk markers and appetite regulating hormones at a subsequent standardized breakfast: a randomized cross-over study. PLoS One. 2013;8(4):e59985. doi:10.1371/journal.pone.0059985.
  5. Kullberg RFJ, Wikki I, Haak BW, et al. Association between butyrate-producing gut bacteria and the risk of infectious disease hospitalisation. The Lancet Microbe. 2024;5:100864. doi:10.1016/S2666-5247(24)00079-X.
  6. Segers ME, Lebeer S. Towards a better understanding of Lactobacillus rhamnosus GG—host interactions. Microbial Cell Factories. 2014;13(Suppl 1):S7. PMCID: PMC4155824.
  7. Capurso L. Thirty Years of Lactobacillus rhamnosus GG: A Review. World Journal of Gastroenterology. 2019;25(29):3120–3144. PMCID: PMC6396855.
  8. Waller PA, et al. Dose-response effects of Bifidobacterium lactis HN019 on gut transit time and bowel function in adults. Scandinavian Journal of Gastroenterology. 2011;46(9):1057–1064. PMID: 21663426.
  9. Patterson E, Griffin SM, Ibarra A, et al. Lacticaseibacillus paracasei Lpc-37 improves psychological and physiological markers of stress and anxiety in healthy adults: a randomised, double-blind, placebo-controlled and parallel clinical trial (the Sisu study). Neurobiology of Stress. 2020;13:100277. doi:10.1016/j.ynstr.2020.100277.
  10. Slykerman RF, et al. Effect of Lactobacillus rhamnosus HN001 in pregnancy and infancy on postpartum depression and anxiety. EBioMedicine. 2017;24:159–165.
  11. Mills S, et al. Bifidobacterium longum as a probiotic: clinical evidence for immune, gut, skin, and metabolic health. Frontiers in Nutrition. 2023;10. PMCID: PMC10012958.
  12. Slavin J. Fiber and prebiotics: mechanisms and health benefits. Nutrients. 2013;5(4):1417–1435. PMCID: PMC3705355.
  13. Żółkiewicz J, et al. Postbiotics—a step beyond probiotics and prebiotics. Nutrients. 2020;12(8):2189. PMCID: PMC7468892.