Every intervention Outliyr has scored for gut health, ranked by its BioHarmony score for this use case rather than its overall rating. The number beside each name is how well that one thing works for gut health; the tier beside it is what it is worth once safety, cost and effort are counted across everything else.
43 of 87 evaluated interventions score 3.0+ out of 10 for gut health · 10 comparisons
BPC-157 gut health earns 9.0/10 because Vasireddi 2025 anchors the most relevant signal. BPC-157 fits gut health when the target is tissue repair, vascular recruitment, or inflammation control, but the case still…
Read the BPC-157 report →For gut health, Lactoferrin lands at 7.4/10 because Berthon et al. 2026 supports the core mechanism. Gut-health support remains credible because lactoferrin acts in the intestinal lumen, binds iron, supports barrier function,…
Read the Lactoferrin report →KPV (Lys-Pro-Val) earns 7.0/10 for gut health because Dalmasso 2008 reports KPV uptake through PepT1 and reduced intestinal inflammation in DSS and TNBS mouse colitis models. Xiao 2017 points in the same…
Read the KPV (Lys-Pro-Val) report →Glycine gut health earns 6.8/10 because Soh 2024 anchors the most relevant signal. Glycine fits gut health because glycine participates in sleep signaling, glutathione, collagen, methylation, and nervous-system balance, depending on the…
Read the Glycine report →For gut health, Molecular Hydrogen scores 6.5/10 because Dhillon 2024 reports 25-article systematic review; mixed preliminary clinical evidence, heterogeneity, and need for stronger trials. Zhou 2024 points in the same direction, but…
Read the Molecular Hydrogen report →Colostrum scores 6.5/10 for gut health, with the best signal coming from Yao et al. 2026. Bovine colostrum has one of its clearest signals in gut permeability: Halasa 2017 found improved lactulose/mannitol…
Read the Colostrum report →Vagus Nerve Stimulation is a 6.3/10 option for gut health, especially where the context resembles Wu et al. 2020. The vagus-gut axis is direct and clinically relevant; gut-motility and IBD studies are…
Read the Vagus Nerve Stimulation report →The gut-health score for Metformin is 6.0/10, based on evidence from the UK Prospective Diabetes Study Group 1998 UKPDS 1998. Metformin modestly alters gut bacteria, increasing Akkermansia and short-chain-fatty-acid producers, which may…
Read the Metformin report →For gut health, Time-Restricted Eating earns 6.0/10 because the evidence points to a plausible use case without proving a universal response. Dai W et al. 2024 is the best anchor here because…
Read the Time-Restricted Eating report →TUDCA scores 5.8/10 for gut health because bile-acid physiology makes digestive tolerance and bile-flow questions plausible, but direct wellness evidence is still narrow. The strongest relevant clinical context comes from Larghi 1997…
Read the TUDCA (Tauroursodeoxycholic Acid) report →For users targeting gut health, Essential Amino Acids earns 5.5/10 because Hagiyama 2024 reports 12 RCTs; 622 patients; low-certainty improvement in patient-reported outcomes and very-low-certainty strength signal after lower-limb surgeries. Wittholz 2024…
Read the Essential Amino Acids report →Gut health and microbiome earns 5.5/10 with an interesting bidirectional story: polyphenols act as prebiotic-like substrates that favor beneficial taxa, and in turn the microbiome converts parent polyphenols into the active metabolites…
Read the Polyphenols (Dietary) report →Lion's Mane gut health earns 5.5/10 because Menon 2025 anchors the most relevant signal. Lion's Mane fits gut health when the goal is gentle mushroom-based support for cognition, mood, nerve biology, or…
Read the Lion’s Mane report →For ulcerative colitis specifically, curcumin has a real adjunct signal. A 2018 meta-analysis in the American Journal of the Medical Sciences found an odds ratio of 6.78 for clinical remission when curcumin…
Read the Curcumin report →Gut health is butyrate's core use, and the signal is real but modest. Two small 2025 ulcerative colitis trials are the best evidence, including a microencapsulated sodium butyrate add-on study (n=98) that…
Read the Sodium Butyrate report →For gut health, Berberine lands at 5.4/10 because context matters. Berberine has antimicrobial and gut-signaling effects, and Chen 2023 supports a berberine-containing H. pylori regimen. That does not make chronic use gut-friendly.…
Read the Berberine report →Gut evidence is mixed and dominated by H. pylori work. Yanaka 2009 reported that 70 grams of broccoli sprouts per day reduced urease breath and stool antigen markers during treatment in 48…
Read the Sulforaphane report →Gut health lands at 5.0 out of 10. Fucoidan is a sulfated polysaccharide that resists digestion and reaches the colon, where preclinical work shows prebiotic-like shifts and mucosal protection. The habitual seaweed…
Read the Fucoidan (Brown Seaweed Polysaccharide) report →Gut health earns 5.0/10 on a single decent trial of refined deep-sea water, not Quinton. Takeuchi 2020 randomized 98 adults to 1 liter per day of refined deep-sea water for 12 weeks…
Read the Quinton Marine Plasma (Seawater Minerals) report →INSUFFICIENT_EVIDENCE for human gut-health benefit; animal autophagy and intestinal-barrier mechanisms are plausible, but GI adverse effects are a practical downside.
Read the Rapamycin report →No direct gut-health evidence. AKG may affect intestinal metabolism in animals, but consumer Ca-AKG human evidence is absent.
Read the Ca-AKG (Calcium Alpha-Ketoglutarate) report →Moderate exercise can improve gut motility and microbiome diversity, especially compared with inactivity. The effect is indirect and can reverse if endurance volume becomes excessive or under-fueled.
Read the Zone 2 Cardio report →Gut-health stays exploratory. GHK reviews mention gastrointestinal lining repair and tissue remodeling, but the evidence is not direct enough for a higher score. Pickart 2015 supports general tissue repair framing, not a…
Read the GHK-Cu report →No direct gut evidence. Manufacturer claims around gut health should be treated as marketing unless supported by independent trials.
Read the Whole-Body Vibration report →COX-2 selectivity reduces upper gastrointestinal toxicity compared with some traditional NSAID regimens, but celecoxib still carries boxed gastrointestinal bleeding, ulceration, and perforation warnings per DailyMed labeling.
Read the Celebrex (Celecoxib) report →Gastrointestinal tolerability is the main side-effect burden. Labeling and trial evidence consistently describe nausea, vomiting, diarrhea, constipation, and delayed gastric emptying as central risks.
Read the Tirzepatide report →Indirect via vagus-gut-brain axis; higher vagal tone linked to gut motility.
Read the HRV Biofeedback report →Gut-barrier benefit is indirect through immune regulation. Tian 2025 severe acute pancreatitis data are abdominal and infection-adjacent, but not a general gut-health RCT.
Read the Thymosin Alpha-1 report →Chlorella supplies fermentable fiber and may shift the gut environment, and its toxin-binding works at the gut level, but dedicated human microbiome outcome trials are thin. Green stool is the most reliable…
Read the Chlorella report →Gut health scores 4.0 out of 10. Wang 2023 reported that pine pollen polysaccharides reduced colon injury and increased Lactobacillus abundance in DSS-colitis mice, a believable prebiotic-style effect for a fermentable polysaccharide.…
Read the Pine Pollen report →HBOT has small signals in fistulizing Crohn disease and inflammatory bowel contexts. Dulai 2012 reports adjunctive benefit in selected patients, but the evidence is heterogeneous and far from microbiome-grade. Broad gut-health or…
Read the Hyperbaric Oxygen Therapy report →Gut inflammation and H. pylori-adjacent data remain mixed; animal studies are stronger than human evidence.
Read the Astaxanthin report →Yu 2024 reviews gut microbiota, aging, and spermidine, but human gut-outcome RCT evidence remains limited.
Read the Spermidine report →Prebiotic and microbiome effects are mostly preclinical; human gut-outcome trials specific to spirulina are limited.
Read the Spirulina report →Gut-health signal is often negative unless fiber is deliberately protected. Standard keto commonly reduces legumes, fruit, whole grains, and fermentable carbohydrate intake, which can lower short-chain fatty acid production. Users can mitigate…
Read the Ketogenic Diet report →Preclinical microbiome and barrier rationale exists, including modulation of tight junctions and short-chain fatty acid producers in rodent models. No adequately powered human microbiome or barrier endpoint trial confirms a direct gut…
Read the Quercetin report →Exercise can support gut motility and microbiome diversity. Norwegian 4x4 is not a targeted gut protocol.
Read the Norwegian 4×4 report →Glutathione supports gut-barrier antioxidant defense mechanistically, but human gut-outcome trials for NAC are sparse.
Read the NAC (N-Acetylcysteine) report →Gut health scores 3.0/10. There is no strong human evidence that vitamin C benefits the microbiome, and high doses commonly cause osmotic diarrhea (the basis of the bowel-tolerance dosing concept), which is…
Read the Vitamin C (Ascorbic Acid) report →Glycine may support intestinal epithelial resilience mechanistically, and collagen peptides are often used anecdotally for gut lining support. Human clinical evidence remains thin.
Read the Collagen Peptides report →Oral HA is partly metabolized by gut bacteria, and some preclinical gut-barrier data exists, but human gut-outcome evidence is limited.
Read the Hyaluronic Acid report →Sodhi 2023 reported higher risk of serious GI outcomes with GLP-1 agonists used for weight loss, and routine nausea, constipation, diarrhea, and vomiting are common.
Read the Semaglutide report →Mushroom beta-glucans act as prebiotic fibers with animal microbiome data, but human gut-outcome trials for this trio are minimal.
Read the Adaptogenic Mushrooms (Reishi, Cordyceps, Chaga) report →Nothing matches those filters.
Head-to-head reports and category rankings that name a winner on this use case.
BPC-157 wins for acute tendon or muscle injuries, gut healing, and cost-sensitive use. TB-500 wins for cardiac tissue repair and systemic post-surgical recovery. Both score 7.3 in the…
No. Berberine scores 6.8 and semaglutide 6.0, and that gap misleads almost everyone who reads it. Berberine scores higher because it is cheap, oral and easy to stop,…
BPC-157 for structural repair, KPV for inflammation you cannot afford to stimulate. BPC-157 scores gut health 9.0 against KPV's 7.0 and wins nearly every other row, because it…
These two get sold as the same thing, a scoop for gut and skin, and they share almost no mechanism. Colostrum is a gut and immune product: gut…
Different jobs, same shelf. Quercetin scores 6.8 and curcumin 6.5, which decides nothing. Curcumin wins joints, inflammatory markers, gut and mood. Quercetin wins allergies, blood pressure, uric acid…
Lion's Mane scores 7.2 and the reishi, cordyceps and chaga blend category scores 5.8. If cognition is the goal, buy the one species: lion's mane takes cognition-focus 7.0…
Different liver problems. NAC scores 8.0 and TUDCA 6.7, and NAC wins liver detox 8.0 against 6.5, but its liver evidence is toxin and oxidative damage. TUDCA owns…
Lactoferrin scores 7.3 against colostrum's 6.8, and lactoferrin is one protein inside colostrum. Buy lactoferrin when iron handling, acne or H. pylori is the target, at $25 to…
Metformin scores 6.9 and berberine 6.8, so the gap is meaningless. Metformin owns blood sugar with decades of outcome trials behind it. Berberine owns fatty liver, needs no…
Spirulina scores 7.0 and chlorella 6.5, so spirulina is the better default for most people. It leads on blood pressure, blood sugar, inflammation and breathing. Chlorella leads on…
BPC-157, at 9.0 out of 10 for gut health. BPC-157 gut health earns 9.0/10 because Vasireddi 2025 anchors the most relevant signal.
Of the top-scoring options, Glycine is the least expensive at about $2 a month, scoring 6.8 out of 10 for gut health.
43 of the 87 interventions evaluated for gut health score 3.0 out of 10 or better, which is the cut-off for appearing on this page.
