Daily gut routine
Soothe Naturals Stomach Soothe
A tablespoon of apple, green banana, seaweed alginate, slippery elm and marshmallow root powder stirred into water on an empty stomach.
- Format
- Powder, once a day
- Type
- Food-based, herbal and alginate (mucosal barrier)
- Cost
- $1.53 a day
- Customer rating
- 4.1 out of 5 from 459 ratings from Amazon
What customers consistently report
- Reflux and heartburn easing over a few weeks
- A powder that is easy to stir up and drink
- A gentle formula with some extra fiber
Those are the themes that recur across the reviews. Low review confidence — the 4.53 from 3,667 reviews is shown by a widget on the brand’s own page, Amazon shows 4.1 from 459 ratings with 12% one-star and the text behind a sign-in through a third-party seller, and no Trustpilot profile for the brand was found.
Why it might work
Sodium alginate forms a gel in stomach acid, and in the antacid products used in trials it is combined with bicarbonate and calcium carbonate so the gel floats as a raft over the stomach contents. This label has the alginate without those carbonates and without a stated amount, so whether a raft forms in the stomach is not shown. Slippery elm and marshmallow root contain mucilage, a gel-forming fiber that the brand says coats and soothes the lining of the digestive tract, though no trial in reflux was found. L-glutamine is described by the brand as supporting the gut lining, and apple, green banana and arrowroot supply fermentable fiber (3 g a tablespoon in all). The label does not let you check how much of any ingredient a tablespoon holds.
What the research supports
No trial of this product was found. The reflux evidence for alginate comes from formulated alginate-antacid medicines such as Gaviscon: a 424-adult, seven-day trial found 47.8% against 33.2% on placebo had a meaningful symptom drop, and a 14-trial meta-analysis of 2,095 people gave an odds ratio of 4.42 against placebo or antacids, while a later meta-analysis found no significant pooled difference from placebo or antacids. This label lists sodium alginate with no carbonate base and no amount, no reflux trial of L-glutamine, slippery elm or marshmallow root was found, and in rats L-glutamine at far higher doses worsened reflux esophagitis.
What the label discloses
Seven ingredients are listed as an 11.1 g “Soothe Naturals Blend” with no individual amounts; only L-glutamine (400 mg) is itemized. The brand states third-party testing of every batch for heavy metals, microbes, yeast and mold and cGMP facilities, with no laboratory or certificate shown. The label has no allergen statement.
Who this tends to suit
We match this product to people reporting heartburn or reflux, bloating, general abdominal discomfort and symptoms that follow particular foods. It fits someone whose priority is day-to-day comfort or handling meals. Whether it is the best fit for you depends on the rest of your answers — what you have already tried, what format you will take, and anything that has to be ruled out.
Where it may not fit
The label supports no added sweeteners. We flag this product for anyone pregnant or breastfeeding, and the quiz removes it rather than recommending it in those cases. That is a caution about who should be deciding, not a claim about the product. A powder only works if you will take it once a day, every day.
Side effects and what to be aware of
Some reviewers report more heartburn, diarrhea, stomach discomfort or a racing heart, others report no change, and a few mention the taste or the thick texture. The brand says to speak with a physician if pregnant and that it can be used with PPIs; the label itself carries no warnings. Subscriptions require two orders before cancelling and are not refundable. The directions allow one or two tablespoons a day, which doubles the cost at the higher dose.
Common questions
Does Stomach Soothe work for heartburn?
No trial of Stomach Soothe was found. Reflux trials of alginate used formulated alginate-antacid medicines: a seven-day trial of 424 adults found 47.8% against 33.2% on placebo had a clinically important symptom drop, but a 2020 meta-analysis of 11 trials found no significant pooled difference from placebo or antacids. The label lists sodium alginate with no carbonate and no amount, and no reflux trials of its L-glutamine, slippery elm or marshmallow root were found. Reviewers range from relief within weeks to more heartburn.
Is Stomach Soothe safe, and what are the side effects?
The label prints no warnings, and the brand says it is generally safe in pregnancy with a physician’s advice and can be used with PPIs. Reviewers on the brand site report heartburn, diarrhea, stomach discomfort and in one case a racing heart. Mucilage herbs such as slippery elm and marshmallow root can slow how other pills are absorbed, so spacing doses from medicines is the usual advice.
How much does Stomach Soothe cost?
A 12 oz pouch is $39.00 one time on the brand site, which is $1.30 a day at one tablespoon and $2.60 at the two-tablespoon upper dose. Subscribing is $35.00 ($1.17 a day) with free shipping, three pouches are $99.00, and Amazon lists $46.00 sold by a third-party seller.
Stomach Soothe vs Gaviscon: is it the same thing?
Both contain alginate from seaweed, but Gaviscon is an antacid medicine that combines alginate with bicarbonate and calcium carbonate, and it was the kind of product tested in reflux trials. Stomach Soothe is a Supplement Facts powder of apple, green banana, arrowroot, papaya, sodium alginate, slippery elm, marshmallow root and L-glutamine, with no printed alginate amount and no carbonate. No head-to-head comparison was found.
Who makes Stomach Soothe, and what is the refund policy?
Soothe Naturals is a family-owned California company whose founders include a registered nurse, with a 45-day money-back guarantee that carries restrictions, no return label and one refund per product per address. Subscriptions require at least two orders before cancelling and are final, non-refundable sales. No Trustpilot profile was found, so there is no independent record of billing or refund complaints either way.
Before you take this. Speak to a doctor or pharmacist first if you are pregnant or breastfeeding. Nothing on this page is medical advice, and no supplement diagnoses, treats, cures or prevents disease.
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Others we researched for the same job
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Related reading
Background on how this type of product works, read from the trial evidence.