June 2026
Digestive complaints, including bloating, irregularity, wind, and abdominal discomfort, are highly prevalent and have a substantial impact on daily comfort, energy, and quality of life. The gut microbiome is increasingly recognised as central to digestive and broader systemic health, and interest in targeted pre- and probiotic supplementation has grown accordingly. Gut Works® is a microbiome-support supplement developed by DR.VEGAN®, combining probiotics, prebiotics, and fibre to support digestive comfort, regularity, and gut function. This abstract reports real-world, user-reported outcomes from a cross-sectional customer survey, including overall effectiveness, a duration-stratified analysis, issue-level relief among prior sufferers, time to benefit, and likelihood to recommend.
A cross-sectional customer feedback survey was administered to DR.VEGAN® customers using Gut Works®, yielding 146 analysable responses. Respondents reported duration and consistency of use, the severity of their gut and digestive issues before starting, the specific issues experienced before use, overall effectiveness (four-point scale plus a ‘too early to say’ option), the issues from which Gut Works® had provided the most relief (multiple responses permitted), time to first results, and likelihood to recommend on a 0–10 scale. Effectiveness percentages are reported among respondents who provided a definitive rating, excluding ‘too early to say’. A pre-specified duration-stratified analysis compared effectiveness across usage-duration bands, and issue relief was calculated among the subset of respondents who had experienced each issue before use. Individual-level data were analysed for all responses.
The cohort was predominantly established and highly adherent: 58.9% had used Gut Works® for four months or more, and 96.6% took it daily (82.9%) or most days (13.7%). Before starting, the burden of digestive symptoms was substantial - 79.5% reported regular or severe gut and digestion issues, and none reported no issues at all. The most common pre-existing issues were bloating (79.5%), constipation (53.4%), excessive wind and gas (52.1%), and fatigue (45.9%), confirming a cohort with meaningful baseline digestive complaints.
Of the 141 respondents who gave a definitive rating, 95.0% rated Gut Works® effective, 46.8% extremely effective and 48.2% somewhat effective. Only 2.8% rated it not so effective and 2.1% not at all effective, giving a combined negative rate of 5.0%. See Figure 1.
| Effectiveness rating | n | % of rated users |
|---|---|---|
| Extremely effective | 66 | 46.8% |
| Somewhat effective | 68 | 48.2% |
| Combined positive response | 134 | 95.0% |
| Not so effective | 4 | 2.8% |
| Not at all effective | 3 | 2.1% |
| Too early to say (excluded from rated %) | 4 | — |
A clear duration-dependent pattern emerged. The extremely effective rating was markedly higher among long-term users, reaching 58.8% at four months or more versus 30.8% at under two months, while the combined positive rate rose from 88.5% to 97.6% across the same range. This gradient is consistent with the biology of microbiome modulation, in which the establishment of a stable, beneficial bacterial population develops over sustained supplementation. See Figure 2.
| Duration of use | n | Extremely effective | Combined positive |
|---|---|---|---|
| Under 2 months | 30 | 30.8% | 88.5% |
| 2–3 months | 16 | 31.2% | 93.8% |
| 3–4 months | 14 | 21.4% | 92.9% |
| 4+ months | 86 | 58.8% | 97.6% |
91.1% of all respondents reported issues in at least one area, with a mean of 2.3 issues addressed. To assess benefits precisely, the benefit rate was calculated among only those respondents who had experienced each issue before use. On this basis, Gut Works® provided support from diarrhoea in 66.1% of prior sufferers, bloating in 62.9%, and excessive wind and gas in 60.5%, with benefit rates above 56% for five of the seven most common complaints. See Figure 3.
| ISSUE | Experienced before (n) | BENEFITED (n) | BENEFIT rate |
|---|---|---|---|
| Bloating | 116 | 73 | 62.9% |
| Diarrhoea | 59 | 39 | 66.1% |
| Excessive wind & gas | 76 | 46 | 60.5% |
| Reflux | 41 | 24 | 58.5% |
| Stomach cramps | 46 | 26 | 56.5% |
| Constipation | 78 | 44 | 56.4% |
| Urgency to use the loo | 45 | 21 | 46.7% |
| Benefits in ≥1 symptom | — | 133 | 91.1% |
Onset of benefit was rapid: of the 134 respondents reporting a specific timeframe, 75.4% noticed results within four weeks and 50.0% within three weeks. Advocacy was exceptionally strong, with a mean recommendation score of 8.7 out of 10, 89.7% scoring 7 or above, and a Net Promoter Score of +57 (66.9% promoters against 10.3% detractors). See Figure 4.
| Time to first results | n | % reporting a timeframe |
|---|---|---|
| 1–2 weeks | 35 | 26.1% |
| 2–3 weeks | 32 | 23.9% |
| 3–4 weeks | 34 | 25.4% |
| 4–6 weeks | 20 | 14.9% |
| 6–8 weeks | 9 | 6.7% |
| 8 weeks or more | 4 | 3.0% |
| Within 4 weeks (cumulative) | 101 | 75.4% |
In this real-world feedback survey of 146 consistent users, the majority with regular or severe baseline digestive issues, Gut Works® demonstrated a high user-reported effectiveness rate (95.0%), targeted benefits across the most common digestive issues, rapid onset of benefit, and outstanding advocacy (NPS +57). The duration-stratified analysis revealed a clear duration-response relationship, with the extremely-effective rating nearly doubling between short-term and long-term users and combined positive ratings approaching universal at four months or more. This pattern is coherent with the gradual establishment of a beneficial gut microbiome and underscores the value of sustained daily use, consistent with the duration-dependent benefit observed across other DR.VEGAN® supplement evaluations. The issue-level analysis, calculated specifically among prior sufferers, provides a robust, clinically meaningful read on issues addressed, with a majority of users experiencing improvement in bloating, diarrhoea, wind, and other complaints. The principal limitations are the absence of a control group, reliance on self-reported outcomes, and the predominance of established users in the cohort, which may bias the overall effectiveness figure upward relative to a treatment-naive population. Prospective, controlled studies with standardised issue instruments and defined follow-up intervals would allow these real-world signals to be confirmed and the duration-response relationship characterised formally.
Keywords: Gut Works®, gut health, digestive health, microbiome, probiotics, prebiotics, bloating, IBS symptoms, user-reported outcomes, duration-response, net promoter score, nutritional supplement
Survey date: 2024-2025 | Respondents: N = 146 | Adherence: 96.6% daily or most days | Data type: Individual-level responses
Media enquiries: Please contact [email protected] | www.drvegan.com
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