Berberin · Berberin
Plant-derived AMPK activator; near-drug-strength effects on blood sugar and lipids.
Short answer
Berberin (Berberin) is a metabolic with evidence grade A, meaning it is well-supported by replicated human trials. We track 12 produkter containing Berberin. Typical doses range from 100.0 to 1500 mg per portion. The top-ranked product scores 9.4 out of 10 on our composite scale (dose, evidence, price, testing, transparency). Prices range up to $49.99 per månad.
Top Berberin produkter
| Product | Varumärke | Dose | Pris/mo | 3rd-party tested | Poäng |
|---|---|---|---|---|---|
| Pure Berberin | 1500 mg | $30.00 | Yes | 9.4 | |
| Berbelean | Enhanced Berberin (Berberin Phytosome + Black Ginger, Saffron, CurCousin, Piperine) | 550.0 mg | $49.99 | Yes | 7.3 | |
| Berberin HCl 500 mg | 500 mg | $25.00 | Yes | 7.3 | |
| Berberin Supplement | 500.0 mg | $19.95 | Yes | 7.0 | |
| Berberin | 510.0 mg | $24.75 | Yes | 6.8 |
Scores are editorial judgments, not a scientific standard. Se how we score.
What it is
An alkaloid from goldenseal, barberry, and Oregon grape. It activates a cellular energy sensor (AMPK) that also gets triggered by exercise, calorie restriction, and metformin.
Why people take it
Blood-sugar lowering effect is close to metformin in some head-to-head trials. LDL and triglyceride reductions are real and reproducible. This is one of the few supplements taken seriously in clinical guidelines.
Our verdict
The most drug-like supplement in the longevity space, for better and worse. Take with food, split doses, and don't combine with prescription diabetes meds without a doctor.
Structure & class
Isoquinoline alkaloid. Activates AMPK, inhibits mitochondrial complex I, modulates gut microbiota.
Mechanism & clinical data
Meta-analyses (Yin 2008, Dong 2013) show HbA1c reductions of 0.7 to 1.0% at 900 to 1500 mg/day, comparable to metformin. LDL reduced ~25 mg/dL. Being investigated as caloric restriction mimetic.
Pharmacokinetics
~5 hours; bioavailability ~5%.
Dose & forms
What to watch out for
Standard berberine has ~5% oral bioavailability. Dihydroberberine and berberine phytosomes absorb better. Split doses across meals (500 mg × 3) to avoid GI upset.
Säkerhet limits and interactions
When a product exceeds the UL or contains an ingredient with clinically significant interactions, a "Review advised" flag appears on its product page and links here.
Source: https://www.webmd.com/vitamins/ai/ingredientmono-1126/berberine
Where this dose comes from
The trial dose above is our editorial pick from the published human trials for this ingredient. We choose the dose that the best-available studies used on the endpoint most relevant to longevity. The range shows the lowest and highest doses tested in published trials. The landmark studies below are the papers we read to set it. You can click through and check our work.
When new trials publish, our automated sweeps flag them. If a new study materially changes the dose, we update it through editorial review and record the old dose, new dose, and the triggering study in every affected product's recommendation history. The dose is never changed automatically.
Regelverk status
Timeline
Regelverk events, evidence grade changes, and key research milestones for Berberin, most recent first. Every entry links to its primär source.
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Italy restricts berberine as drug at doses >=10 mgItaly classified berberine as a drug at doses of 10 mg or higher, restricting its sale as a food supplement. Other EU markets still allow berberine as a food supplement. The restriction creates a fragmented regulatory landscape within the EU.
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EU Court sharpens the bar for botanical health claimsA Court of Justice of the European Union ruling in april 2025 further tightened the requirements for how botanical ingredients (herbs, plant extracts) can be marketed with health claims in the EU, effectively removing much of the flexibility of the on-hold list.
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EU report identifies 117 supplement substances as potential health risksThe HoA Working Group on Food Supplements (26 European countries) published its first report evaluating 117 substances used in food supplements. Of these, 65 were assessed as likely novel foods, 6 were already regulated, 34 had insufficient data, and 12 were prioritized for Article 8 restriction under Regulation (EC) No 1925/2006. The 12 priority substances include ashwagandha, curcumin, melatonin, piperine, St. John's wort, coumarin, p-synephrine, maca, holy basil, Melaleuca, black cohosh, and L-tryptophan. The report drew on 1,500 RASFF alerts reviewed between 2017 and mid-2022.
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Yin et al. 2008 (Metabolism)500 mg × 3/day for 3 months matched metformin for HbA1c reduction in type 2 diabetes.
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EU Health Claims Regulation adoptedRegulation (EC) No 1924/2006 laid down harmonised rules for nutrition and health claims made on foods, including supplements. Only claims listed in the EU Register of authorised claims can be used. Rejected botanical claims are held in a separate on-hold list.
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EU introduces the Novel Food RegulationRegulation (EC) No 258/97 required any food or food ingredient without a history of consumption in the EU before 15 maj 1997 to be authorised before being placed on the market. This is the framework that captures NMN, spermidine as a supplement ingredient, urolithin A, and many other longevity actives.
Reported adverse events
Consumer reports submitted to an official government adverse-event database. These reports mention this ingredient but do not prove it caused the reaction. Report volume reflects market penetration as much as inherent risk.
Retrieved from the FDA Adverse Event Reporting System (CAERS) via the openFDA API. Verified 2026-08-06. Reports are voluntary consumer submissions and mandatory serious-event filings. They establish surveillance, not causality.
Berberin is a plant alkaloid that activates AMPK and lowers blood glucose and lipids about as well as some prescription diabetes drugs.
Verified 2026-06-20. We update this section as new peer-reviewed trials land.
Best-supported claim
Berberin's strongest evidence is for glycemic control in type 2 diabetes. Jing Wang and colleagues' 2024 metaanalys of 50 trials and 4,150 participants found berberine monotherapy significantly lowered fasting glucose, postprandial glucose, and lipid markers, and that adding berberine to standard hypoglycemic drugs produced further HbA1c reductions of 0.69 percentage points (https://pmc.ncbi.nlm.nih.gov/articles/PMC11617981/). Multiple head-to-head trials, including an early pilot by jun Yin and colleagues, found berberine's glucose-lowering effect statistically similar to metformin over 12 to 13 weeks, with HbA1c dropping from roughly 9.5% to 7.5% (https://pmc.ncbi.nlm.nih.gov/articles/PMC2410097/). A separate 2021 metaanalys of 13 trials and 1,173 participants found berberine alone was not statistically superior to metformin, but berberine plus metformin outperformed metformin alone on fasting glucose, postprandial glucose, HbA1c, and insulin resistance, with no increase in adverse events (https://www.scirp.org/journal/paperinformation?paperid=113351).
Not supported by the evidence base
Marketing often calls berberine 'nature's Ozempic' or claims it matches metformin outright. The actual evidence is more nuanced: a 2021 metaanalys found berberine monotherapy was not statistically superior to metformin, only comparable in some trials, and most head-to-head comparisons come from small or moderate-quality Chinese trials, not large multi-center studies (https://www.scirp.org/journal/paperinformation?paperid=113351). For weight loss, the picture is real but modest, not dramatic: a 2025 metaanalys of 23 trials found berberine reduced body weight by only 0.88 kg and BMI by 0.48 kg/m2, figures far smaller than GLP-1 drug results despite frequent comparisons to them (https://pubmed.ncbi.nlm.nih.gov/41310257/). Berberin's oral bioavailability is under 1%, with roughly 56% of an oral dose never absorbed at all, so gut bacteria composition strongly influences how much reaches the bloodstream and effects vary between individuals.
Typical dose
500 mg three times daily with meals (total 1000-1500 mg/day), the dose used in nearly all glycemic and lipid trials
Säkerhet
Berberin causes gastrointestinal side effects in a meaningful minority of users: one trial reported transient GI adverse effects (diarrhea, constipation, abdominal pain) in 34.5% of participants. Meta-analyses consistently report no significant difference in serious adverse events between berberine and placebo or metformin. When combined with metformin or other glucose-lowering drugs, the combined hypoglycemic effect raises the risk of low blood sugar, particularly in people also restricting carbohydrates. Oral bioavailability is extremely low (under 1%), and gut bacteria composition and activity strongly influence individual absorption and response.
Interactions worth flagging
- metformin and other diabetes medications
- statins
- CYP2D6/CYP3A4-metabolized drugs with narrow therapeutic windows
- blood thinners
Three recent studies to know
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Effects of administering berberine alone or in combination on type 2 diabetes mellitus: a systematisk översikt and metaanalysLäs studie →
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The effect of berberine on obesity indices: a systematisk översikt and metaanalysLäs studie →
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Efficacy and safety of berberine on the components of metabolic syndrome: a systematisk översikt and metaanalys of randomized placebokontrollerad trialsLäs studie →
Landmark studies
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Yin et al. 2008 (Metabolism)
500 mg × 3/day for 3 months matched metformin for HbA1c reduction in type 2 diabetes.
Läs studie →
Found in these produkter (12)
Alla produkter in our catalog that contain Berberin, ranked by our overall score. Ranking is editorial, never paid.
Buying guides and comparisons
Related ingredients
Se alla in Metabolic →Molekyler in the same class, plus the actives most often formulated alongside Berberin in our catalogue.
Frequently asked questions
What is Berberin?
An alkaloid from goldenseal, barberry, and Oregon grape. It activates a cellular energy sensor (AMPK) that also gets triggered by exercise, calorie restriction, and metformin.
What dose of Berberin should I take?
The trial dose in published human studies is 1500 mg per dag, with a range of 900 to 1500 mg per dag. Always consult a qualified clinician before starting any supplement.
Is Berberin safe?
Standard berberine has ~5% oral bioavailability. Dihydroberberine and berberine phytosomes absorb better. Split doses across meals (500 mg × 3) to avoid GI upset.
What is the best Berberin supplement?
We track 12 produkter containing Berberin. The top-ranked product scores 9.4 out of 10 on our composite scale, which evaluates dose, evidence, price, third-party testing, and transparency. See the comparison table above. Scores are editorial judgments, not a scientific standard.
What is the evidence grade for Berberin?
Berberin has evidence grade A, meaning it is well-supported by replicated human trials. Grade A means replicated human RCTs with hard endpoints. Grade B means human RCTs with biomarker outcomes. Grade C means mixed or small human trials. See our evidence grading methodology.
Data verification
Bevisning grades are reviewed when new human RCTs are published. Product counts update automatically as new produkter are added. Dose ranges reflect published trial data, not brand recommendations. Read how we verify.