https://supplegut.com/guides/ What the trials and the labels show about gut supplements, one question at a time. en-us Sat, 03 Oct 2026 12:00:00 GMT https://supplegut.com/assets/brand/icon-s.pnghttps://supplegut.com/guides/ https://supplegut.com/guides/psyllium-husk-how-long-to-work/ https://supplegut.com/guides/psyllium-husk-how-long-to-work/ Sat, 03 Oct 2026 12:00:00 GMT Psyllium husk works in 12 to 72 hours for the first bowel movement and takes about four weeks of daily 10 g doses to change regularity, per the trials. IBS and cholesterol take longer; here is each clock. https://supplegut.com/guides/constipation-treatments-with-strong-evidence/ https://supplegut.com/guides/constipation-treatments-with-strong-evidence/ Sat, 03 Oct 2026 12:00:00 GMT What works for constipation: the 2023 gastroenterology guideline grades five treatments strong and five conditional, and magnesium, kiwifruit, prunes, probiotics and PHGG have trials of their own. Each one graded, with the dose that worked. https://supplegut.com/guides/most-clinically-researched-gut-supplements/ https://supplegut.com/guides/most-clinically-researched-gut-supplements/ Sat, 03 Oct 2026 12:00:00 GMT Ranked by the size of the trial evidence behind each one, not by which one is "best." Real trial counts, real sample sizes, and one brand-name catch to know about. https://supplegut.com/guides/metamucil-dosage/ https://supplegut.com/guides/metamucil-dosage/ Sat, 03 Oct 2026 12:00:00 GMT Metamucil dosage from the labels: one teaspoon of powder (about 3.4 g of psyllium) up to three times a day, five capsules (about 2.6 g) one to three times a day, and gummies with no psyllium at all. How that compares with the 10 g a day the trials used. https://supplegut.com/guides/probiotic-or-fiber/ https://supplegut.com/guides/probiotic-or-fiber/ Sat, 03 Oct 2026 12:00:00 GMT Probiotic or fiber? Constipation: psyllium, the clearest result across 16 fiber trials. Loose stools on antibiotics: L. rhamnosus GG or S. boulardii. Loose stools with IBS: either, and psyllium has the larger trial. Bloating: neither first, because fermentable fiber makes gas. Reflux: neither. https://supplegut.com/compare/metamucil-vs-colonbroom/ https://supplegut.com/compare/metamucil-vs-colonbroom/ Sat, 03 Oct 2026 12:00:00 GMT Metamucil vs ColonBroom (Colon Broom): both are psyllium husk at almost the same dose per serving. The label figures, the cost per serving, the published subscription terms and the customer ratings for each. https://supplegut.com/compare/methylcellulose-vs-psyllium/ https://supplegut.com/compare/methylcellulose-vs-psyllium/ Sat, 03 Oct 2026 12:00:00 GMT Psyllium (Metamucil) had the clearest effect across 16 fiber trials and has an FDA cholesterol claim and a 2023 guideline behind it. Methylcellulose (Citrucel) has an OTC label and no placebo-controlled trial. Dose, gas and cost per day, side by side. https://supplegut.com/compare/metamucil-vs-citrucel/ https://supplegut.com/compare/metamucil-vs-citrucel/ Sat, 03 Oct 2026 12:00:00 GMT Metamucil is psyllium; Citrucel is methylcellulose. One has 16 constipation trials and a cholesterol claim, the other has an OTC label and a gas claim. Doses, ingredients, evidence and cost per day. https://supplegut.com/compare/psyllium-vs-magnesium-for-constipation/ https://supplegut.com/compare/psyllium-vs-magnesium-for-constipation/ Sat, 03 Oct 2026 12:00:00 GMT Psyllium had the clearest effect across 16 fiber trials; magnesium oxide has two trials, at 1.5 g a day. The magnesium in most powders is citrate at a third of that dose. What each does, who each suits, and the kidney caution. https://supplegut.com/guides/probiotic-cfu-how-many-you-need/ https://supplegut.com/guides/probiotic-cfu-how-many-you-need/ Fri, 02 Oct 2026 12:00:00 GMT How many CFU should you take a day? Most products sit at 1 to 10 billion. The evidence gives a number for a few goals, and the one three-dose trial found the biggest dose lost. https://supplegut.com/guides/does-seed-ds01-work-for-bloating/ https://supplegut.com/guides/does-seed-ds01-work-for-bloating/ Fri, 02 Oct 2026 12:00:00 GMT Does the Seed probiotic work? A 350-person placebo-controlled trial of the actual capsule, published January 2026: what it found on bloating, how long it took, the side effects, and who funded it. https://supplegut.com/guides/what-your-tongue-says-about-your-gut/ https://supplegut.com/guides/what-your-tongue-says-about-your-gut/ Fri, 02 Oct 2026 12:00:00 GMT Three tongue signs with real research behind them — a coated tongue’s own microbiome, a B12-linked smooth tongue, and a celiac-linked patchy tongue — versus the organ map that hasn’t held up under testing. https://supplegut.com/guides/does-bovine-colostrum-help-gut-health/ https://supplegut.com/guides/does-bovine-colostrum-help-gut-health/ Fri, 02 Oct 2026 12:00:00 GMT Strong signal for blocking permeability spikes from NSAIDs and exercise at low doses — one trial found the opposite at a much higher dose, and the only trial testing IBS symptoms directly found no benefit. https://supplegut.com/guides/does-beta-glucan-help-gut-health/ https://supplegut.com/guides/does-beta-glucan-help-gut-health/ Fri, 02 Oct 2026 12:00:00 GMT Human trials show real fecal and microbiome changes at 3 g/day, but most were never designed to measure symptoms — and the two trials that did test constipation or IBS used ingredients most consumer products don’t contain. https://supplegut.com/guides/what-works-best-for-acid-reflux/ https://supplegut.com/guides/what-works-best-for-acid-reflux/ Fri, 02 Oct 2026 12:00:00 GMT The best supplement for acid reflux on trial evidence is alginate, which has the largest randomized-trial base of anything sold for reflux. Melatonin, DGL, zinc carnosine and the rest are graded below it, with what each trial found. https://supplegut.com/guides/what-works-best-for-gastritis/ https://supplegut.com/guides/what-works-best-for-gastritis/ Fri, 02 Oct 2026 12:00:00 GMT Which gastritis supplements have real trial support, which borrow their evidence from a different condition, and which rest on a study that cannot be retrieved. https://supplegut.com/guides/how-parasites-affect-gut-health/ https://supplegut.com/guides/how-parasites-affect-gut-health/ Fri, 02 Oct 2026 12:00:00 GMT Learn how intestinal parasites can affect digestion, nutrient absorption, the gut microbiome, and inflammation—and when persistent symptoms may warrant parasite testing. https://supplegut.com/guides/melatonin-heart-failure/ https://supplegut.com/guides/melatonin-heart-failure/ Fri, 02 Oct 2026 12:00:00 GMT A 130,000-person study linked long-term melatonin to a 90% higher heart failure risk. Here’s what it actually found, its limits, and what it means for you. https://supplegut.com/guides/does-gutlex-work/ https://supplegut.com/guides/does-gutlex-work/ Fri, 02 Oct 2026 12:00:00 GMT Does Gutlex work? We break down the 40-year Japanese research behind its LEX postbiotic, what real customers report, and who it’s most likely to help. https://supplegut.com/guides/does-kepos-work/ https://supplegut.com/guides/does-kepos-work/ Fri, 02 Oct 2026 12:00:00 GMT Kēpos delivers the same oligosaccharides and lactoferrin found in human milk to adult guts. Here’s what the clinical research, the ingredients and 480+ customer reviews say. https://supplegut.com/guides/does-viome-work/ https://supplegut.com/guides/does-viome-work/ Fri, 02 Oct 2026 12:00:00 GMT Viome reads the RNA in your stool to score your gut and build custom supplements. Here’s whether the science holds up, what 3,400 customers report, and who it’s worth it for. https://supplegut.com/guides/digestive-enzymes-vs-probiotics-for-bloating/ https://supplegut.com/guides/digestive-enzymes-vs-probiotics-for-bloating/ Fri, 02 Oct 2026 12:00:00 GMT Digestive enzymes or probiotics for bloating: enzymes act on the meal in front of you, probiotics on the gut over weeks, and the trials show which fits when. https://supplegut.com/guides/generic-florastor-and-culturelle-alternatives/ https://supplegut.com/guides/generic-florastor-and-culturelle-alternatives/ Fri, 02 Oct 2026 12:00:00 GMT Generic Culturelle exists: its strain, L. rhamnosus GG, is sold under other labels, and the letters GG are the test. Generic Florastor does not: its yeast strain is sold by one company. What to check on the bottle before you switch. https://supplegut.com/guides/which-psyllium-husk-to-buy/ https://supplegut.com/guides/which-psyllium-husk-to-buy/ Fri, 02 Oct 2026 12:00:00 GMT Plain husk powder, flavored Metamucil or capsules: what a serving of each contains, what a day costs, and what to check on the label before you buy. https://supplegut.com/guides/probiotic-side-effects/ https://supplegut.com/guides/probiotic-side-effects/ Fri, 02 Oct 2026 12:00:00 GMT Gas and bloating in the first days are the common ones. What the placebo-controlled trials of Align, Culturelle, Florastor, Bio-Kult, Seed DS-01 and Visbiome recorded, and who the serious risks apply to. https://supplegut.com/guides/best-supplement-for-bloating-and-gas/ https://supplegut.com/guides/best-supplement-for-bloating-and-gas/ Fri, 02 Oct 2026 12:00:00 GMT The best supplement for bloating depends on what drives it: peppermint oil for the cramping kind, two probiotics with bloating trials, enzymes when a meal is the trigger, and Iberogast for fullness. Ranked by the trials. https://supplegut.com/guides/best-supplement-for-loose-stools-and-ibs-d/ https://supplegut.com/guides/best-supplement-for-loose-stools-and-ibs-d/ Fri, 02 Oct 2026 12:00:00 GMT The best supplement for loose stools depends on the cause: a 400-person IBS-D trial, the single strains with IBS results, the two probiotics that prevent antibiotic diarrhea, glutamine for post-infectious IBS, and why psyllium helps where bran hurts. https://supplegut.com/guides/best-supplement-for-stress-and-gut/ https://supplegut.com/guides/best-supplement-for-stress-and-gut/ Fri, 02 Oct 2026 12:00:00 GMT The best supplement for a stress-related gut, by the trials: the IBS options that calm the symptoms stress sets off, melatonin for IBS with poor sleep, and what probiotics, chamomile and magnesium do for the stress itself. Hypnotherapy and CBT outrank them all. https://supplegut.com/guides/do-digestive-enzymes-work/ https://supplegut.com/guides/do-digestive-enzymes-work/ Fri, 02 Oct 2026 12:00:00 GMT Do digestive enzymes work? The single-purpose ones do, for the food they match, and the trials say by how much; the broad blends have one trial; DAO and betaine HCl were tested for other things. https://supplegut.com/guides/does-ibgard-work/ https://supplegut.com/guides/does-ibgard-work/ Fri, 02 Oct 2026 12:00:00 GMT Does IBgard work? A four-week placebo-controlled trial of the capsule in 72 adults with IBS cut symptoms 40% against 24% on placebo. What is in it, the label directions (two capsules, 30 to 90 minutes before meals), side effects and who it suits. https://supplegut.com/guides/does-benefiber-work/ https://supplegut.com/guides/does-benefiber-work/ Fri, 02 Oct 2026 12:00:00 GMT Does Benefiber work? It adds 6 g of taste-free fiber to any drink, but the constipation trials found effects for psyllium and pectin, not wheat dextrin. What it is, the label dose, the gas question and what to buy instead for regularity. https://supplegut.com/guides/which-probiotic-should-i-take/ https://supplegut.com/guides/which-probiotic-should-i-take/ Fri, 02 Oct 2026 12:00:00 GMT Which probiotic should you take? The one whose strain has a trial for your problem: L. rhamnosus GG or S. boulardii for antibiotic diarrhea, B. longum 35624, Bio-Kult, L. plantarum 299v or Seed DS-01 for IBS-type bloating and pain, and no clear winner for everyday use. https://supplegut.com/guides/which-gut-supplement-is-right-for-me/ https://supplegut.com/guides/which-gut-supplement-is-right-for-me/ Fri, 02 Oct 2026 12:00:00 GMT Which gut supplement is right for you follows from the symptom: psyllium for constipation, L. rhamnosus GG or S. boulardii on antibiotics, peppermint oil or B. longum 35624 for IBS-type cramping, the matching enzyme for food triggers, alginate for reflux, Iberogast for fullness. Each with its trial. https://supplegut.com/guides/gut-health-quizzes-compared/ https://supplegut.com/guides/gut-health-quizzes-compared/ Fri, 02 Oct 2026 12:00:00 GMT Gut health quizzes compared: what SuppleGut, GutCited, Dr. Ruscio, Bioma, HUM and Persona each ask and give you, plus the Viome, Tiny Health and Ombre tests. The questionnaires take one to five minutes and end in a product, an ingredient or a daily pack; the stool tests list at $149.99 to $279 and end in a report. https://supplegut.com/guides/gut-supplement-label-statistics/ https://supplegut.com/guides/gut-supplement-label-statistics/ Fri, 02 Oct 2026 12:00:00 GMT Gut supplement label statistics from the SuppleGut catalog: 72% of probiotic labels name every organism down to the strain, 4% name some and 24% stop at the species. Plus the shares for allergen statements, diet claims, formats and cost per day. https://supplegut.com/compare/metamucil-vs-benefiber/ https://supplegut.com/compare/metamucil-vs-benefiber/ Fri, 02 Oct 2026 12:00:00 GMT Two completely different fibers. Psyllium gels and is the only fiber supplement the ACG found enough evidence to recommend for constipation; wheat dextrin has almost no trial data. https://supplegut.com/compare/psyllium-husk-vs-metamucil/ https://supplegut.com/compare/psyllium-husk-vs-metamucil/ Fri, 02 Oct 2026 12:00:00 GMT Psyllium husk vs Metamucil: Metamucil is psyllium husk, so the fiber is the same. Which is better comes down to dose, ingredients and price: 7 g a serving for $0.31 a day, or 3 g a teaspoon with aspartame and Yellow 6. https://supplegut.com/compare/align-vs-culturelle/ https://supplegut.com/compare/align-vs-culturelle/ Fri, 02 Oct 2026 12:00:00 GMT Align vs Culturelle: Culturelle costs less than half as much and has roughly 10 times the customer ratings; Align’s evidence is specific to IBS. Strain, dose, price, evidence and label quality side by side. https://supplegut.com/compare/culturelle-vs-florastor/ https://supplegut.com/compare/culturelle-vs-florastor/ Fri, 02 Oct 2026 12:00:00 GMT On antibiotics, Florastor survives the course because it is a yeast. Culturelle is a bacterium, costs about half as much and is dairy-free. Strain, dose, price and evidence side by side. https://supplegut.com/compare/align-vs-seed-ds01/ https://supplegut.com/compare/align-vs-seed-ds01/ Fri, 02 Oct 2026 12:00:00 GMT Align is one strain with two decades of IBS trials; Seed DS-01 is 24 strains with one 350-person trial on the finished product. Evidence, allergens, dose and cost per day, side by side. https://supplegut.com/compare/ibgard-vs-iberogast/ https://supplegut.com/compare/ibgard-vs-iberogast/ Fri, 02 Oct 2026 12:00:00 GMT IBgard is coated peppermint oil for IBS cramps and urgency; Iberogast is a six-herb liquid for fullness and nausea. Different problems, different trials, and the liver-safety history behind the older Iberogast formula.