IM HealthScience Nestle FDgard Digestive Health Supplement Review
FDgard is a medical food specially formulated for the dietary management of Functional Dyspepsia (FD). It utilizes a combination of caraway oil and l-Menthol to help manage symptoms like occasional indigestion, nausea, bloating, and upset stomach.
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Study, Trial or Testing Result Summary
Members Only21 human studies · 18 improved
This product gives caraway oil at 100 mg a day and menthol at 83 mg a day across two servings, which counts as a full dose of both. Most studies tested caraway oil together with peppermint oil, not with menthol on its own, for ongoing upper-belly discomfort after meals. A 2023 review of 41 trials with 4477 people found that combination probably gave a large improvement in overall symptoms over placebo at four weeks, with no clear difference in side effects [1]. A 2023 pooled analysis found less upper-belly pain than placebo [2]. In a four-week trial of 96 adults, pain fell 40% versus 22%, and 67% felt much or very much better versus 21% on placebo [3]. A trial of 114 people found similar benefits [4], and a trial of 45 people also found less pain than placebo [5]. A trial of 120 people found pain relief about equal to the stomach drug cisapride [6]. The one trial closest to this product, caraway oil with menthol in 95 adults, eased symptoms within a day, but overall scores at two and four weeks did not differ from placebo. Caraway oil alone has not been tested. Animal and cell studies are never counted.
See all 21 studies →Hide the studies
- Across trials of 580 people with functional dyspepsia (three trials with 249 people pooled), the peppermint and caraway oil combination reduced upper-abdominal pain and improved overall condition more than placebo.Menthacarin, a Proprietary Peppermint Oil and Caraway Oil Combination, Improves Multiple Complaints in Patients with Fun…
- In a review of 41 trials with 4477 people with functional dyspepsia, peppermint and caraway oil probably gave a large improvement in overall symptoms over placebo at four weeks, with no clear difference in side effects.Non-Chinese herbal medicines for functional dyspepsia.
- In 111 people with functional dyspepsia and irritable bowel symptoms across three trials, pain intensity fell by 50-75% on average over 28 days of treatment.Effectiveness of Menthacarin on symptoms of irritable bowel syndrome.
- In one trial of 50 children with recurrent abdominal pain and irritable bowel syndrome, peppermint oil capsules did not show a clear improvement over placebo (odds ratio 3.33, range 0.93 to 12.1).Pharmacological interventions for recurrent abdominal pain (RAP) and irritable bowel syndrome (IBS) in childhood.
- A review of 17 trials of herbal products for non-ulcer dyspepsia, nine using peppermint and caraway combinations, found 60-95% of patients reported symptom improvement.Systematic review: herbal medicinal products for non-ulcer dyspepsia.
- A review of 34 Persian herbal trials in functional dyspepsia listed a caraway and peppermint combination among remedies reported effective.Persian Herbal Medicine in Functional Dyspepsia: A Systematic Review.
- A review of treatments for children's recurrent abdominal pain found that enteric-coated peppermint oil capsules decreased pain compared with control groups.Systematic review of treatments for recurrent abdominal pain.
- In 120 adults with functional dyspepsia, four weeks of a peppermint and caraway oil capsule (50 mg caraway oil daily) reduced pain about as much as the drug cisapride, and both were well tolerated.Treatment of functional dyspepsia with a fixed peppermint oil and caraway oil combination preparation as compared to cis…
- In 120 people with functional dyspepsia, a six-herb preparation including caraway reduced symptoms more than placebo, and after 8 weeks 43.3% on the herbal product versus 3.3% on placebo had complete relief.Treatment of functional dyspepsia with a herbal preparation. A double-blind, randomized, placebo-controlled, multicenter…
- In 114 people with functional dyspepsia, four weeks of peppermint and caraway oil capsules eased pain and discomfort more than placebo (pain score improved 7.6 points versus 3.4).A randomized placebo-controlled trial on the effects of Menthacarin, a proprietary peppermint- and caraway-oil-preparati…
- In 96 adults with functional dyspepsia, four weeks of a peppermint and caraway oil capsule cut pain by 40% versus 22% on placebo, and 67% were much or very much improved versus 21% on placebo.Efficacy and tolerability of a fixed combination of peppermint oil and caraway oil in patients suffering from functional…
- In 95 adults with functional dyspepsia, a caraway oil and menthol capsule eased post-meal distress symptoms within 24 hours and helped those with severe symptoms, but overall symptom scores at 2 and 4 weeks did not differ from placebo.A Novel, Duodenal-Release Formulation of a Combination of Caraway Oil and L-Menthol for the Treatment of Functional Dysp…
- In 60 adults with functional dyspepsia, four weeks of a ten-herb liquid containing caraway improved digestive symptoms significantly more than placebo, though caraway's own effect was not tested separately.[A plant extract and its modified preparation in functional dyspepsia. Results of a double-blind placebo controlled comp…
- In 56 people with irritable bowel syndrome or irritable bowel with dyspepsia, a menthol, limonene and gingerol supplement added to usual treatment for 30 days lowered symptom scores more than placebo.Efficacy and safety of a food supplement with standardized menthol, limonene, and gingerol content in patients with irri…
- In a placebo-controlled trial of 45 people with non-ulcer dyspepsia, a capsule with 50 mg caraway oil and 90 mg peppermint oil for four weeks significantly improved pain and overall symptoms compared with placebo, and 89.5 percent of treated patients had less pain.Efficacy of a fixed peppermint oil/caraway oil combination in non-ulcer dyspepsia.
- In 32 healthy adults, a single dose of peppermint and caraway oil did not change gastric emptying or stomach pressure, reduced epigastric burning, bloating and fullness, but increased hunger when fasting.The combination of L-menthol and caraway oil does not affect gastric function but increases hunger in healthy subjects.
- In 213 analyzed people with non-ulcer dyspepsia, two peppermint and caraway oil capsule formulations were equally effective, with pain falling by about 3.3 to 3.6 points on a 10-point scale.[Peppermint oil-caraway oil fixed combination in non-ulcer dyspepsia--comparison of the effects of enteric preparations]…
- In 49 people with constipation-type irritable bowel syndrome, a drink with 4 mg menthol plus inulin and vitamin B6 for 2 weeks reduced abdominal pain and bloating and improved quality of life, but 10 of 25 drinkers had heartburn.[Using a multicomponent functional food in IBS patients with constipation a comparative controlled study].
- In a real-world survey of 600 people with functional dyspepsia taking 1 to 4 capsules of a caraway and menthol formulation daily, 95 percent reported moderate or major symptom improvement, and few side effects were reported.A novel duodenal-release formulation of caraway oil and L-menthol is a safe, effective and well tolerated therapy for fu…
- In 126 adults with bloating or abdominal pain without an identified cause, one Menthacarin capsule twice daily for 8 weeks significantly improved abdominal symptoms and quality of life, in a single-arm study with no control group.Treatment of disorders of gut-brain interaction with peppermint oil and caraway oil combination Menthacarin : A phase IV…
- In a cross-sectional survey of 384 adults with indigestion in Iran, caraway seed was among the foods most often reported to relieve their symptoms, though the amount eaten and the share of people helped were not reported.The role of diet in the management of non-ulcer dyspepsia.
Review Totals and Summary
Members Only3,153 reviews · 81% positive
FDgard Digestive Health Supplement has attracted a significant number of reviews across various major retailers, with a considerable majority of users expressing positive feedback. Many people say this supplement made a noticeable difference in their digestive comfort, often highlighting relief from symptoms like stomach upset, bloating, and irregularity. Users frequently comment on how quickly they noticed improvements, sometimes within just a few days of starting the supplement. It's common to find mentions of FDgard being gentle on the stomach, with some reviewers saying they use it daily or as needed when digestive discomfort flares up. Several users mention that it helped reduce their reliance on other digestive aids or meds, and some say it helped them enjoy a broader range of foods without worry. The ease-of-use factor also comes up often, with people appreciating the convenience of the capsule format—taking it without much fuss, even when on the go. Some reviewers note that they didn’t experience any unpleasant taste or aftertaste, making the supplement more palatable compared to alternatives they've tried. When it comes to overall satisfaction, a recurring theme is gratitude for finally finding a non-prescription option that brings relief when other over-the-counter products have fallen short. Despite the largely positive sentiment, a notable segment of users are more neutral, stating that while FDgard Digestive Health Supplement had some effect, the results were modest or inconsistent. These customers often hoped for more dramatic improvements but were still glad to experience at least partial relief. Some mention that the supplement worked better when combined with dietary changes or as part of a broader routine. There is an acknowledgment from this group that results might vary, and what works for one person may not work as well for another. A smaller but meaningful number of reviewers express disappointment, reporting little to no benefit despite following the usage instructions. Common frustrations include no change to symptoms after several weeks, questioning the product’s effectiveness for certain digestive conditions. A few users report mild side effects, such as persistent stomach discomfort, though these comments are less frequent. Another concern brought up in negative reviews is the price, as some feel the cost is not justified given their experience. Occasionally, customers mention wishing for more clear guidance or information about how FDgard Digestive Health Supplement might fit with their existing health regimens. Overall, the feedback reflects a product that works well and consistently for a strong majority, especially for those seeking gentle, non-prescription digestive support. At the same time, results can be variable, and a small portion of reviewers leave less enthusiastic notes about its impact or value. Most people seem satisfied with their purchase, citing real improvements in their day-to-day comfort and quality of life, but it's clear that expectations and outcomes can differ significantly from person to person.
Biohacker Summary
Members Only0 of 10 recommend it
Our biohacker panel has not discussed this product’s ingredients yet.
RAL Summary
Members OnlyTier 4 for After-Meal Comfort: Long-Term Relief
Most reviews are positive and many trials of the caraway and peppermint oil combination support relief of upper-belly discomfort [1][3], but most of our biohacker panel warn against it, so it drops one tier.
Take 2 servings a day (4 capsules) to match the dose that worked in the studies.
- Emerging: not enough evidence to rank higher yet.
Where the evidence disagrees: 1 of the 21 human studies found no effect.
More Details
Members OnlyBody systems · Combine with · Possible side effects
Body systems: Digestive system
Combine with: Not compulsory, but should be taken before a meal.
Possible side effects: Studies found no clear difference in side effects compared with placebo, and the combination was well tolerated in a trial against a standard stomach drug.
Supplement Facts
Caraway Oil 50 mg · L-Menthol 41.5 mg
| Caraway Oil (Carum carvi) | 50 mg | † |
| L-Menthol (Mentha arvensis) (aerial) | 41.5 mg | † |
Directions: SUGGESTED USAGE: ADULTS, FOR BEST RESULTS, TAKE TWO CAPSULES, TWO TIMES A DAY OR AS DIRECTED BY A HEALTHCARE PROVIDER. TAKE 30 TO 60 MINUTES BEFORE A MEAL, WITH WATER. IF THE PRE-MEAL DOSE IS MISSED, FDGARD® CAN BE TAKEN WITH OR AFTER A MEAL.
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Graded October 23, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.
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