LeanBiome Review: Ingredients, Evidence, Price and Refunds

What LeanBiome Is and What the Vendor Says

LeanBiome is sold through ClickBank by Lean for Good. The sales page now calls the product Biome; the checkout and the label file still use the LeanBiome name. Everything in this section is the vendor’s claim, quoted or closely paraphrased from its sales page on October 28, 2026, not our finding.

• The vendor says the formula is “the first in the world to combine nine clinically-researched ‘lean bacteria’ species” with Greenselect Phytosome, a caffeine-free green tea extract.
• It says an imbalance in the gut microbiome is “the newly-discovered root cause of belly fat and unexplained weight gain,” and that the blend helps reverse it.
• It describes the formula as based on “the latest Ivy League research” and says it is made in an “FDA-inspected” facility that follows Good Manufacturing Practices.
• It says the capsules are vegan-friendly and free from gluten, sugar, nuts, soy, crustaceans and dairy.

The page also carries the standard notice that its statements “have not been evaluated by the Food and Drug Administration.” That matters: the FDA does not approve dietary supplements for safety or effectiveness before they are sold (FDA questions and answers on dietary supplements).

What Is in Each Serving

The Supplement Facts panel on the sales page lists the following for a 2-capsule serving. The “studied dose” column shows the amount used in the human studies we cite below, so you can compare.

Two things stand out. The label does not name the bacterial strains, and results in probiotic studies are tied to specific strains. And the two plant extracts together come to 400 mg a day, half the 800 mg used in the trials of that combination.

What the Evidence Says, Ingredient by Ingredient

Here is the short version: the vendor’s headline numbers next to what the cited studies actually measured.

Lactobacillus gasseri

The vendor says a 12-week trial of 210 people found an average loss of 8.5% of belly fat, and works this out as “15 lbs of stubborn fat” for a 170-pound woman. The trial exists (Kadooka and colleagues, 2013), but the 8.5% was a drop in the area of visceral fat on a CT scan, not 8.5% of body weight, so the 15-pound figure is not supported by the study. An earlier trial of the same strain in 87 adults (Kadooka, 2010) reported an average weight change of about 1.1 kg (1.4%) over 12 weeks. Both used strain SBT2055 in fermented milk, and the 2013 study saw the effects fade within 4 weeks of stopping.

Lactobacillus rhamnosus

The vendor cites a Laval University study in which women lost 9.7 pounds of fat. In that trial (Sanchez and colleagues, 2014), obese men and women took strain CGMCC1.3724 or a placebo while cutting calories. Across everyone, weight loss was not significantly different from placebo; women on the probiotic lost more than women on placebo, and men saw no difference. The abstract does not give the 9.7-pound figure, so we could not confirm it.

Lactobacillus fermentum and the other species

The vendor cites a Journal of Functional Foods study of L. fermentum (3% less body fat in 43 days). We could not find it on PubMed and did not read it. For probiotics in general, the NIH Office of Dietary Supplements says “it’s unclear whether probiotic supplements have any effect on weight or body fat” (NIH ODS weight-loss fact sheet).

Greenselect Phytosome (green tea extract)

The vendor’s 30-pound versus 11-pound figure comes from a 90-day study of 100 adults with obesity (Di Pierro and colleagues, 2009): 14 kg lost with the extract plus a low-calorie diet, 5 kg with the diet alone. The comparison group got no placebo. A later placebo-controlled trial in 40 women who had just lost weight (Gilardini and colleagues, 2016) found a change of −1.0 kg with the extract versus +0.3 kg with placebo over three months, and the extract group’s own range (−2.5 to +0.5 kg) included no change at all. NIH’s summary: green tea “might help you lose a small amount of weight.”

Sphaeranthus indicus with Garcinia mangostana

A combined extract of these two plants has the strongest trials of anything on the label. In placebo-controlled studies, adults taking 400 mg twice a day alongside a 2,000-calorie diet and regular walks lost 3.7 to 5.2 kg more than placebo over 8 weeks (Stern, 2013; Stern, 2013, pooled trials), and 5.1 kg versus 1.1 kg over 16 weeks in a later trial (Kudiganti, 2016). Those trials used a specific branded extract at 800 mg a day; the LeanBiome label gives 400 mg a day in total and does not say which extract it uses.

Inulin

Inulin is a fiber that feeds gut bacteria, which is why the vendor includes it. The label amount is 200 mg. We found no weight study of that amount on its own.

LeanBiome Price, Shipping and Refund Terms

These are the vendor’s own terms as shown on October 28, 2026. ClickBank processes the payment; the vendor decides refunds.

• Second shipping line: the 2- and 3-bottle cards also show “+$19.95 Shipping” without saying where it applies, so check the shipping charge at checkout. The cost per day above uses US shipping: $9.95, or free on 6 bottles.
• Bonus: 3- and 6-bottle orders include an eBook of 21 smoothie recipes.
• Extra offers at checkout: the vendor’s affiliate page says the order process also offers two other formulas, LeanBodyPro and LeanSupreme. You do not have to add them.
• Single bottle: the page text mentions a 30-day supply for $79, but the smallest package shown was 2 bottles.
• No subscription: the vendor says it is a one-time payment with no auto-ship.

How the 180-day guarantee works

The sales page calls it an “empty bottle” guarantee and says you can get 100% of the purchase price back within six months, even if you have used every capsule. The separate refund policy page (dated November 16, 2022) adds the details: the 180 days count from the order date, not the delivery date; you return any unopened bottles at your own shipping cost (opened or empty bottles do not need to go back); and you contact support with your name, order email and order number. Its listed contacts are 1-800-763-1979 (Monday to Friday 6am to 5pm, Saturday 6am to 2pm Pacific) and a return address in Tallmadge, Ohio. Refunds take up to 5 to 7 business days, according to the vendor.

Check current LeanBiome prices on the official site

Try This: Write your order date on the box when it arrives, and set a reminder at day 150 so you have time to decide before the 180-day window closes.

Who Should Not Use It, or Should Ask a Doctor First

• Pregnant or breastfeeding: the vendor itself says to consult a physician first.
• Taking any prescription medicine: green tea products can change blood levels of some drugs. NCCIH names nadolol (a beta-blocker), atorvastatin (a statin) and raloxifene, and says to talk with your provider before using green tea supplements if you take any medicine (NCCIH: green tea).
• Liver problems: liver injury, though uncommon, has been reported mainly with green tea extracts in capsule or tablet form (NCCIH).
• A weakened immune system or a serious illness: the risk of harm from probiotics is greater in people with severe illnesses or compromised immune systems (NCCIH: probiotics).
• Diabetes, heart disease, liver disease or high blood pressure: the NIH Office of Dietary Supplements says to talk with your health care provider before taking a weight-loss supplement, especially with these conditions.
• Under 18, or a history of an eating disorder: our review method lists both among the situations where you should ask a doctor before starting any weight-loss product.

Never stop or change a prescribed medicine to take a supplement. Possible side effects listed by NIH include gas and other stomach upset for probiotics, and constipation, nausea and higher blood pressure for green tea extract. If you react badly, stop and call your doctor; you can also report it to the FDA through MedWatch.

What We Could Not Verify

• Any result for LeanBiome itself: we found no published trial of the finished product. Every study above tested a single ingredient or a different product.
• Which strains are in the capsule: the label gives species only, so it cannot be matched to the strains that were studied.
• The L. fermentum study and the 9.7-pound L. rhamnosus figure cited by the vendor.
• The “FDA-inspected” and Good Manufacturing Practices claims: the page shows no inspection record or certificate.
• Customer reviews and star ratings on the sales page: we did not check them and do not repeat them.

None of this means the product cannot help anyone. It means the evidence is for some of its ingredients, often at different doses and usually alongside diet changes, not for the capsule you would buy.

LeanBiome Questions People Ask

Does LeanBiome work without dieting?

No study of LeanBiome itself exists to answer that. Of its ingredients, only the L. gasseri trials did not describe a diet; the 2010 trial reported about 1.1 kg of weight change over 12 weeks, and the 2013 trial reported visceral fat area, not weight. The larger effects came from trials that combined an ingredient with a calorie-controlled diet.

How long until you would know?

The ingredient trials ran 8 to 24 weeks. The 180-day refund window is long enough to judge a 2- or 3-bottle order, as long as you count from the order date.

Is it a subscription?

The vendor says no: it is a one-time payment with no auto-ship. Check your order confirmation, and say no to any extra products offered during checkout that you did not plan to buy.

Can I take it with my medication?

Ask your pharmacist first. Green tea products can change blood levels of some medicines, including nadolol, atorvastatin and raloxifene, according to NCCIH.

Where is LeanBiome sold?

Through the vendor’s own site, with payment by ClickBank. The vendor says it is not sold in stores.

Is LeanBiome Worth Trying? How to Decide

If you are weighing it up, these questions do most of the work:

1. Are you also changing what you eat? The Di Pierro green tea trial and the Sphaeranthus with Garcinia trials paired the ingredient with a calorie-controlled diet, the latter with regular walks, and the placebo-controlled Greenselect trial, which gave the extract with piperine, followed a 3-month lifestyle programme. The L. gasseri abstracts describe no diet, and the one that reported weight found a small change (about 1.1 kg). If you do not want to count calories, the realistic expectation from this evidence is a small change at most.
2. Is the cost comfortable? At roughly $1.63 to $2.80 a day, six months costs $294. Compare that with what the same money buys elsewhere, such as plain yogurt or other fermented foods, or a session with a registered dietitian.
3. Have you checked your medicines? Show the label to a pharmacist, especially the green tea extract line.
4. Can you keep track of the refund window? It runs from the order date, unopened bottles go back at your cost, and the larger packages are the ones with the most money at stake.

For habits that do not need a product, our weight management basics and two simple eating habits are free, and so is the 7-Day Healthy Living Guide. To see how we reached this review, read how we review supplements.

Decided to try it? Check the price and the refund terms on the vendor’s own page before you order, since they can change.

See LeanBiome on the official site