Daily gut routine
Silver Fern Brand Postbiotic+
A stick-pack drink mix of lysine butyrate, algae beta-glucan and a heat-treated Lactococcus lactis strain, with a capsule version.
- Format
- Powder
- Type
- Postbiotic
- Cost
- $2.38 per stick on Amazon at one a day; the brand’s directions run one to four sticks
- Customer rating
- 4.4 out of 5 from 33 ratings from Amazon
What the accounts we could find say
- Better digestion and less bloating
- Feeling fewer colds and less inflammation
- A taste that is better than the smell suggests
There is not enough independent feedback here to call those themes reliable. Low review confidence — the 4.4 from 33 Amazon ratings is the only independent figure and the capsule listing has 1 rating; the brand’s 4.72 from 36 reviews is a Yotpo widget on its own page where 6 reviews are marked verified and nine date from the launch month, and the Trustpilot profile for silverfernbrand.com is unclaimed with two reviews.
Why it might work
Butyrate is a short-chain fatty acid that gut bacteria make from fiber and that cells lining the colon use as fuel. Here it is bound to the amino acid lysine, a form the maker says dissolves fully in water so it can be sold as a drink mix. The beta-glucan from the alga Euglena and the heat-killed Lactococcus lactis are included for immune support, which is the brand’s lead claim. The idea is to supply butyrate and immune-active cell components directly rather than through live bacteria. What the label does not let you check is how much butyrate the lysine salt delivers, how much reaches the colon, or whether the combination does more than any one ingredient.
What the research supports
No trial of this product or of its butyrate ingredient (BIOMEnd, a lysine butyrate) was found, and the one registry entry comparing lysine butyrate with sodium butyrate and tributyrin in 10 men has no posted results. Trials of other butyrate salts are the nearest evidence: 300 mg a day of microencapsulated sodium butyrate reduced pain during defecation in 66 adults with IBS, 1.5 g a day reduced pain, diarrhea and bloating in 52 adults with diabetes and IBS-type symptoms, and 500 mg a day of calcium butyrate gave treatment success in 73% against 3.8% in 51 children with IBS, while a pediatric inflammatory bowel disease trial found no difference. The other two ingredients have immune-focused trials (a Euglena beta-glucan and Lactococcus lactis strain Plasma against respiratory symptoms), not trials in gut symptoms. This label supplies 1,000 mg of lysine butyrate, about 370 mg of butyric acid by arithmetic, per serving.
What the label discloses
Every line on both panels has its own weight: 1,000 mg lysine butyrate, 200 mg algae beta-glucan and 36 mg of heat-treated Lactococcus lactis strain Plasma (100 billion cells). The label does not print how much butyrate the lysine salt supplies, and no release or absorption data is posted. No third-party testing is stated for the product, and no manufacturing facility or allergen statement is printed.
Who this tends to suit
We match this product to people reporting general abdominal discomfort and irregular bowel habits. It fits someone whose priority is day-to-day comfort or resetting after a course of antibiotics or an upset. 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
We hold no dietary claims on file for this product, so we do not assume any. 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 as often as the label directs.
Side effects and what to be aware of
Many reviewers like the effect and the taste of the stick pack, while others describe the smell as cheese and one calls it unbearable, and some report slow or no effect and the cost. The brand takes back only unopened products within 30 days with a 5% restocking fee, and Amazon marks both listings non-returnable. The label advises consulting a physician if pregnant or nursing, under 18, or with a known medical condition.
Common questions
Does Silver Fern Postbiotic+ work?
No trial of this product or of its lysine butyrate ingredient was found. Trials of other butyrate salts show symptom benefit in some IBS groups and no difference in a pediatric inflammatory bowel disease trial. On Amazon the stick pack holds 4.4 from 33 ratings, and reviewers who like it mention digestion, colds and inflammation.
What is in Silver Fern Postbiotic+?
One stick holds 1,000 mg of BIOMEnd (L-lysine butyrate), 200 mg of BetaVia Pure (algae beta-1,3-glucan) and 36 mg of Immuse, heat-treated Lactococcus lactis strain Plasma at 100 billion cells. The capsule version has the same three at the same amounts per six capsules, plus calcium and phosphorus from dicalcium phosphate. The panel does not say how much butyric acid is in the lysine salt; by arithmetic it is about 370 mg.
How much does Silver Fern Postbiotic+ cost per day?
A 30-stick pack is $71.48 on Amazon and $64.65 on the brand site, about $2.38 and $2.16 a day at one stick. The brand’s own directions run up to four sticks a day for severe issues, which would be $8.62 a day at the brand price. Brand subscriptions take 15% off, and the capsule bottle is $62.29.
Silver Fern Postbiotic+ vs tributyrin or sodium butyrate: what is the difference?
Postbiotic+ uses L-lysine butyrate, which the maker says dissolves fully in water; the brand says it chose it over tributyrin and sodium butyrate but cites no study. A registry entry comparing the three in 10 men shows no results. Return Healthy Double Butyrate and Tesseract ProButyrate use other forms and are also untested against it.
Does Silver Fern Postbiotic+ smell bad, and can I return it?
The brand says it has a white-cheddar-like smell, and 10 of 36 brand-page reviews and several Amazon reviewers mention it, though many say it tastes fine. The brand accepts unopened products within 30 days with a 5% restocking fee and does not accept opened returns; Amazon lists both listings as non-returnable.
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.