Guide

Does Return Healthy Double Butyrate work? Calcium butyrate and tributyrin with printed amounts, and the salt trials they are compared with

Return Healthy Double Butyrate is a capsule that pairs two forms of butyrate, the short-chain fatty acid gut bacteria make from fiber, with three probiotic organisms, shilajit and aloe. Most butyrate supplements use one form; this one prints 2,000 mg of calcium butyrate and 200 mg of tributyrin on the same panel.

What Double Butyrate is, and what it is not

The serving is four capsules, and a 120-capsule bottle holds 30 servings. Per serving the panel prints calcium butyrate 2,000 mg (stated to supply 1,680 mg of butyrate), tributyrin 200 mg (as ButyraGen), shilajit extract 80 mg (20% fulvic acid), aloe vera 200:1 extract 80 mg, Bacillus coagulans 2.5 billion CFU, Lacticaseibacillus rhamnosus GG 2.5 billion CFU and Saccharomyces boulardii 0.4 billion CFU. CFU are counted at manufacture. No proprietary blend is declared.

The calcium line is lower than the salt weight implies. Pure calcium butyrate is about 81% butyrate by weight, so 2,000 mg would hold roughly 1,630 mg of butyrate and about 374 mg of calcium (our arithmetic); the panel prints 1,680 mg and 310 mg, and does not say why. Of the three organisms, only L. rhamnosus GG carries a strain code; B. coagulans and S. boulardii are printed as species.

What butyrate is, and why the form matters

Butyrate is a fuel for colon cells. Taken by mouth as a free acid it has a strong odor and is absorbed high in the gut, which is why the supplement forms exist. Calcium butyrate is a salt, like sodium butyrate with calcium in place of sodium. Tributyrin is three butyric acid units attached to glycerol, a fat the brand says releases butyrate further along the digestive tract; the brand calls the two forms complementary. By our arithmetic 200 mg of tributyrin holds about 175 mg of butyric acid, so a day at the label dose supplies about 1.85 g of butyrate-equivalent.

We found no release, dissolution or absorption data for either form in this product, and nothing on what ButyraGen is or who makes it. A 2026 review says outcomes may depend on delivery technology, release profile and dosage (Caban et al., Digestive Diseases and Sciences, 2026); for this product the first two are not posted.

The trial of the product itself

There is none. PubMed and ClinicalTrials.gov return no trial of Double Butyrate, of calcium butyrate combined with tributyrin, or of ButyraGen. The evidence is for butyrate salts and mixtures in other forms, populations and doses.

The evidence for butyrate salts

In 66 adults with IBS already on drug therapy, microencapsulated sodium butyrate (300 mg a day) or placebo was added for 12 weeks. Pain during defecation fell by four weeks and urgency and bowel habit improved by 12, while abdominal pain and overall severity did not change significantly (Banasiewicz et al., Colorectal Disease, 2013). In 52 adults with type 2 diabetes who met Rome IV criteria for IBS, 1.5 g a day of microencapsulated sodium butyrate lowered abdominal pain, diarrhea and bloating over 12 weeks; the trial was registered retrospectively (Panufnik et al., Scientific Reports, 2026).

The one trial of calcium butyrate was in 51 children with IBS. At 500 mg a day for eight weeks, 73% reached treatment success against 3.8% on placebo (Cristofori et al., Journal of Pediatric Gastroenterology and Nutrition, 2025). A pediatric trial in inflammatory bowel disease, gave 150 mg of sodium butyrate twice a day for 12 weeks and found no difference in remission or disease activity (Pietrzak et al., Nutrients, 2022). The ProButyrate guide sets out more of these trials.

Set against them, four capsules supply about 1.85 g of butyrate-equivalent. That is roughly seven to eight times the butyrate in the 300 mg sodium butyrate trials (about 240 mg), about one and a half times the 1.5 g diabetes trial (about 1,190 mg), and about four and a half times the pediatric calcium butyrate dose (about 410 mg). No dose-response trial of oral butyrate was found, so a larger dose is not shown to work better. The one human crossover found tested a butyrate and hexanoate triglyceride, not plain tributyrin, in 12 men with overweight; a medium dose raised plasma butyrate and moved no secondary outcome (van Deuren et al., Frontiers in Nutrition, 2022).

The probiotics, strain by strain

A 2026 strain-specific meta-analysis of IBS trials (32 articles, 10 strains) found efficacy for L. rhamnosus GG and conflicting results for the S. boulardii strain CNCM I-745 (Maslennikov et al., Journal of Clinical Medicine, 2026). The positive B. coagulans trial used the named strain Unique IS2, 2 billion CFU in 136 adults for eight weeks (Madempudi et al., Scientific Reports, 2019). An S. boulardii trial in 67 people with diarrhea-predominant or mixed IBS found a quality-of-life gain of 15.4% against 7.0%, with no better result on individual symptoms (Choi et al., Journal of Clinical Gastroenterology, 2011). With no strain printed for those two, the results may not apply. The CFU guide covers how counts are read.

How Double Butyrate is described

The Amazon listing text calls it “this sodium butyrate supplement”; the panel lists calcium butyrate and tributyrin and no sodium butyrate. The listing bullets also say it will help alleviate bloating and IBS, reduce fatigue and brain fog, and improve cognitive function in children and adults; the panel and bottle make none of those claims, and carry the standard not-intended-to-treat-or-cure statement.

The brand cites independent third-party testing; no laboratory, certificate of analysis or seal is named or posted.

How to take it

The directions read: take 2 capsules 2 times per day, or as directed by a healthcare practitioner, with or without food. That is the full four-capsule serving, split in two; there is no lower label dose, though two reviewers say they take half. No trial sets a dose or duration for this formula; the salt trials ran 8 to 12 weeks.

Side effects and who should not take it

The bottle prints one caution: anyone pregnant or lactating should consult a healthcare practitioner first. Reviewers on Amazon and the brand site report heartburn, diarrhea and gas after starting, and a few call the capsules large. The allergen statement lists gluten, peanut, almond, hazelnut, milk, egg, soy and crustacean as absent; it does not cover fish, sesame or other tree nuts.

What the reviews say

On Amazon it holds 4.1 from 45 ratings: 68% five-star, 10% four-star, 7% three-star, none two-star and 15% one-star. Of the eight top reviews we read, four are marked as free product through Amazon’s Vine program. The brand page shows a Judge.me widget at 4.70 from 46 reviews, but 44 of those are labeled as collected from another provider, only 2 are marked verified buyers, and most predate the current product page. We found no Trustpilot profile, and Walmart’s page could not be read.

The recurring praise is less bloating and gas and no taste or smell. The recurring complaints are four capsules a day, the price, digestive side effects and no noticeable change.

Cost, subscription and refund terms

At two capsules a day the one-time price is about $1.15 a day. The brand page shows no subscription option and takes 5% off two bottles in the cart. Its terms give a 60-day window: unopened, sealed products can be returned, shipping is not refunded and a return label cost may be deducted; opened products may be eligible for store credit, not a refund. Amazon purchases follow Amazon’s return rules.

Who Double Butyrate is for

• Someone who wants two butyrate forms and three probiotics with the amounts printed.
• Someone who can take four capsules a day for the 8 to 12 weeks the butyrate trials ran.

For a single form, BodyBio Butyrate with Calcium and Magnesium is a butyrate salt, CoreBiome Tributyrin is the fat-carried form and Tesseract ProButyrate is $1.20 a day at its lowest label dose. For loose stools with cramping, the IBS-D guide starts from the symptom, and the quiz matches a product to it.

The products in this catalog

Common questions

Sources

• Banasiewicz T, Krokowicz Ł, Stojcev Z, et al. "Microencapsulated sodium butyrate reduces the frequency of abdominal pain in patients with irritable bowel syndrome." Colorectal Disease, 2013;15(2):204–209. PMID 22738315. pubmed.ncbi.nlm.nih.gov/22738315
• Panufnik P, Więcek M, Szwarc P, et al. "Effect of microencapsulated sodium butyrate on abdominal symptoms and carbohydrate metabolism in patients with type 2 diabetes: a randomized placebo-controlled trial." Scientific Reports, 2026;16(1). PMID 41974937. doi.org/10.1038/s41598-026-47309-9
• Cristofori F, Calabrese FM, Iacobellis I, et al. "Calcium butyrate efficacy in pediatric irritable bowel syndrome: Randomized placebo-controlled multiomics-based clinical trial." Journal of Pediatric Gastroenterology and Nutrition, 2025;81(3):551–561. PMID 40635319. doi.org/10.1002/jpn3.70154
• Pietrzak A, Banasiuk M, Szczepanik M, et al. "Sodium Butyrate Effectiveness in Children and Adolescents with Newly Diagnosed Inflammatory Bowel Diseases-Randomized Placebo-Controlled Multicenter Trial." Nutrients, 2022;14(16):3283. PMID 36014789. doi.org/10.3390/nu14163283
• van Deuren T, et al. Butyrate and hexanoate triglyceride crossover in 12 men with overweight. Frontiers in Nutrition, 2022. PMID 36687671. pubmed.ncbi.nlm.nih.gov/36687671
• Caban M, Pikus E, Czarnecka-Chrebelska K, et al. "Use of Sodium Butyrate and Its Microencapsulated Forms in Intestinal Diseases-Current Clinical Approach." Digestive Diseases and Sciences, 2026;71(5):1626–1639. PMID 41238998. doi.org/10.1007/s10620-025-09536-4
• Maslennikov R, Gosteeva E, Ananeva V, et al. "Strain-Specific Systematic Review with Meta-Analysis of Probiotics Efficacy in the Treatment of Irritable Bowel Syndrome." Journal of Clinical Medicine, 2026;15(3). PMID 41682832. doi.org/10.3390/jcm15031152
• Madempudi RS, Ahire JJ, Neelamraju J, et al. "Randomized clinical trial: the effect of probiotic Bacillus coagulans Unique IS2 vs. placebo on the symptoms management of irritable bowel syndrome in adults." Scientific Reports, 2019;9(1):12210. PMID 31434935. doi.org/10.1038/s41598-019-48554-x
• Choi CH, Jo SY, Park HJ, et al. "A randomized, double-blind, placebo-controlled multicenter trial of Saccharomyces boulardii in irritable bowel syndrome: effect on quality of life." Journal of Clinical Gastroenterology, 2011;45(8):679–683. PMID 21301358. doi.org/10.1097/MCG.0b013e318204593e
• Return Healthy Double Butyrate: Supplement Facts, directions, price, warranty terms and review widget on the brand page. returnhealthy.com; Amazon listing: price, rating, star split and reviews. amazon.com