Guide

Does Nutritist Refluxter work? An alginate raft in a capsule, with one printed number for three ingredients

Refluxter is a capsule of sodium alginate, calcium carbonate and sodium bicarbonate from Nutritist, taken two at a time after meals and at bedtime for heartburn and silent reflux. What sets it apart is the format: the alginate reflux trials used liquids and chewable tablets, and this is a capsule. This page sets out what the panel prints, what the raft evidence covers, and what the reviews and refund terms show.

What Refluxter is, and what the panel prints

The bottle holds 60 vegan hypromellose capsules, and a serving is two of them, so a bottle is 30 servings. The panel is headed Supplement Facts, not Drug Facts. It has three lines: calcium (as calcium carbonate) 72 mg, sodium (from sodium alginate and sodium bicarbonate) 150.3 mg, and a “Proprietary Alginate Complex” of 1.47 g that the label says is made up of sodium alginate, calcium carbonate and sodium bicarbonate.

That 1.47 g is one number for three ingredients. The panel does not say how much of it is alginate, how much is calcium carbonate and how much is bicarbonate. The brand’s page and Amazon title say “1,000+ mg” of high G-block sodium alginate per serving, which is a statement about the product, not a line on the panel, and no G-block ratio or molecular weight is given anywhere we looked. By our arithmetic, 72 mg of calcium is about 180 mg of calcium carbonate, which leaves roughly 1,290 mg for alginate and bicarbonate together; if the alginate is 1,000 mg or more, the bicarbonate is at most about 290 mg.

The same ingredient types as an antacid medicine

Those three are the ingredient types in alginate-antacid medicines such as Gaviscon, and Amazon files the listing under Antacids. A medicine carries a Drug Facts box with the amount of each active; Refluxter carries Supplement Facts with one combined figure, so the trial doses below cannot be matched to this capsule.

How a raft forms, and why the timing is after meals

Sodium alginate, extracted from seaweed, reacts with stomach acid to form a gel. In alginate-antacid products the carbonate and bicarbonate release small gas bubbles that make the gel float as a raft on top of the stomach contents, and calcium helps the gel set. If reflux happens, the raft is meant to come up first, so what reaches the esophagus is gel rather than acid. It is a physical barrier, not an acid reducer, which is why these products are taken after meals and at bedtime rather than before eating.

The brand says its raft forms “within 10 minutes,” relief lasts “up to 4 hours” and the high G-block grade makes a stronger raft. Those are brand statements; we found no published measurement of a raft from this capsule or any alginate capsule.

What the raft evidence covers

PubMed and ClinicalTrials.gov return no trial of Refluxter, and none of any alginate, bicarbonate and calcium carbonate capsule. The evidence comes from liquids and chewable tablets.

• 14 randomized trials, 2,095 people. A 2017 meta-analysis found alginate beat placebo or antacids on symptom resolution, odds ratio 4.42 (95% CI 2.45 to 7.97). Against acid-suppressing drugs the pooled estimate was 0.58 (0.27 to 1.22), not significant.
• 424 adults, 7 days. A placebo-controlled trial of Gaviscon Double Action chewables found a meaningful symptom drop in 47.8% against 33.2% on placebo.
• As an add-on to a daily acid medicine, the results are mixed. In 136 people still symptomatic on a once-daily proton pump inhibitor, Gaviscon Advance four times a day beat placebo (symptom score change −5.0 against −3.5). Of two Gaviscon Double Action studies in breakthrough symptoms, the 52-person exploratory one favored it and the 262-person confirmatory one did not differ significantly from placebo. A Korean trial of a bicarbonate-free alginate found complete symptom resolution in 58.7% with an inhibitor plus alginate and 57.5% with the inhibitor plus placebo.
• Silent reflux, 49 people. The brand’s laryngopharyngeal reflux claim rests on an open-label study of liquid Gaviscon Advance: the Reflux Symptom Index was lower than in the untreated group at two months (11.2 against 16.8) and six months (11.2 against 18.3).

None of these trials tested stopping an acid medicine, which is a decision for the prescriber. The reflux guide sets out the alginate trials alongside the other options.

How to take Refluxter

The bottle says two capsules after meals and at bedtime, up to four times a day (eight capsules), each time with 8 oz of water. The brand page adds 15 to 20 minutes after eating, eight weeks before judging it for silent reflux, and other medicines 30 to 60 minutes before Refluxter or four hours after. The capsules are size 00, 735 mg each (1.47 g divided by two).

Side effects, sodium and who should not take it

The bottle warning says people with an ileostomy or other conditions affecting intestinal transit, or with difficulty swallowing capsules, should not take it, and it is for adults only. It advises consulting a physician with a medical condition, pregnancy, lactation or prescription medicines, and the brand page tells people with kidney concerns or high blood pressure to watch sodium and calcium.

Each serving holds 150.3 mg of sodium and 72 mg of calcium, which at the eight-capsule maximum is about 601 mg of sodium and 288 mg of calcium a day (our arithmetic). Of 57 side-effect mentions in Amazon’s review summary, 20 are negative, describing “stomach cramps, pain, and bloating.”

What the reviews say

Amazon shows 4.4 from 674 ratings: 73% five stars, 11% four, 6% three, 2% two and 8% one. Amazon is an independent retailer, though the seller is Nutritist itself. Its summary of review text counts 271 mentions of effectiveness, 205 positive and 66 negative, and a value split of 17 positive and 20 negative.

The brand’s own page runs a Judge.me widget showing 4.73 from 48 reviews, none below three stars. Of those 48, 18 say in the text that the product was provided free, and six carry the same date. There is no Trustpilot profile for the brand’s domain, and we could not reach Reddit.

Recurring praise: relief of heartburn and night-time or throat symptoms, and a capsule that is easy to swallow, tasteless and easy to carry. Recurring complaints: no effect or worse reflux in a minority, the price and bottle size (a bottle lasts 15 days at four capsules a day), and stomach upset.

Cost, subscription and refunds

A 60-capsule bottle is $32.99 on the brand site and on Amazon, which is $1.10 for one serving. four servings, the bottle maximum and the brand’s schedule for silent reflux, is $4.40 a day, and a bottle lasts about a week at that dose. The brand site subscription is $29.69 a month for one bottle ($0.99 a serving); Amazon’s Subscribe & Save is $28.04 ($0.93 a serving), and $26.39 after repeat deliveries. The brand page showed “Sold out” when read, while Amazon showed the product in stock.

The brand’s subscription terms state no minimum term, no cancellation fee, online cancellation, and a full refund of a charge made after cancelling, with the right to decline future subscription orders from an account where that happens repeatedly. The refund policy is a 100% satisfaction guarantee for first-time customers within 30 days, limited to one opened bottle per order, with unopened bottles refundable once per customer or household, the customer paying return shipping and an RMA number needed first. Amazon lists the product as non-returnable unless damaged or defective.

Refluxter against Khelp, RefluxRaft and Reflux Gourmet

The nearest comparison is HartSpan Khelp, another alginate capsule, which declares 950 mg of sodium alginate, 170 mg of sodium and 70 mg of calcium per serving. Refluxter’s 1.47 g includes the two carbonates, so it is not like for like with Khelp’s 950 mg. RefluxRaft and Reflux Gourmet are a gel and a spoonable liquid, the forms closest to the trials. No trial compares the four.

Who Refluxter is for

• Adults whose heartburn comes after meals or at night and who want a capsule rather than a liquid.
• People outside the bottle’s exclusions (ileostomy, intestinal transit problems, trouble swallowing capsules).
• Shoppers who want a printed alginate amount can see Khelp’s declared 950 mg, or take the quiz to narrow the options.

The products in this catalog

Common questions

Sources

• Leiman DA, Riff BP, Morgan S, et al. “Alginate therapy is effective treatment for GERD symptoms: a systematic review and meta-analysis.” Diseases of the Esophagus, 2017;30(5):1–9. PubMed 28375448
• Wilkinson J, Wade A, Thomas SJ, et al. “Randomized clinical trial: a double-blind, placebo-controlled study to assess the clinical efficacy and safety of alginate-antacid (Gaviscon Double Action) chewable tablets in patients with gastro-oesophageal reflux disease.” European Journal of Gastroenterology & Hepatology, 2019;31(1):86–93. PubMed 30272584
• Reimer C, Lødrup AB, Smith G, Wilkinson J, Bytzer P. “Randomised clinical trial: alginate (Gaviscon Advance) vs. placebo as add-on therapy in reflux patients with inadequate response to a once daily proton pump inhibitor.” Alimentary Pharmacology & Therapeutics, 2016;43(8):899–909. PubMed 26909885
• Coyle C, et al. “Randomised clinical trial: addition of alginate-antacid (Gaviscon Double Action) to proton pump inhibitor therapy in patients with breakthrough symptoms.” Alimentary Pharmacology & Therapeutics, 2017;45(12):1524–1533. PubMed 28464343
• Kim JH, Lee YC, Kim EH, et al. “The clinical efficacy of a pure alginate formulation (Lamina G) for controlling symptoms in individuals with reflux symptoms.” Gut and Liver, 2019;13(6):642–648. PubMed 30970442
• McGlashan JA, Johnstone LM, Sykes J, Strugala V, Dettmar PW. “The value of a liquid alginate suspension (Gaviscon Advance) in the management of laryngopharyngeal reflux.” European Archives of Oto-Rhino-Laryngology, 2009;266(2):243–251. PubMed 18506466
• Nutritist Refluxter brand page: label, directions, price, subscription terms and claims. nutritist.us; Supplement Facts label image. nutritist.us label
• Nutritist. “Refluxter Prop 65 warning.” nutritist.us; refund policy nutritist.us/policies/refund-policy
• Amazon listing: price, rating, rating split, review summary and bottle warning. amazon.com/dp/B0CZDJ1MSK