Plant-derived AMPK activator; near-drug-strength effects on blood sugar and lipids.
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.
Berberine (Berberine) is a metabolic with evidence grade A, meaning it is well-supported by replicated human trials. We track 14 products containing Berberine. Typical doses range from 250 to 1500 mg per serving. The top-ranked product scores 9.1 out of 10 on our composite scale (dose, evidence, price, testing, transparency). Prices range up to $49.99 per month.
| Product | Brand | Dose | Price/mo | 3rd-party tested | Score |
|---|---|---|---|---|---|
| Pure Berberine | DoNotAge | 1500 mg | $30.00 | Yes | 9.1 |
| Berberine HCl 500 mg | Nootropics Depot | 500 mg | $25.00 | Yes | 7.6 |
| Berberine Supplement | Double Wood Supplements | 500 mg | $19.95 | Yes | 7.6 |
| Berbelean | Enhanced Berberine (Berberine Phytosome + Black Ginger, Saffron, CurCousin, Piperine) | Nootropics Depot | 550 mg | $49.99 | Yes | 7.5 |
| Berberine Pro - 600 mg (1,200mg/day), 60 capsules | ProHealth Longevity | 600 mg | $20.97 | Yes | 7.3 |
Scores are editorial judgments, not a scientific standard. See how we score.
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.
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.
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.
Isoquinoline alkaloid. Activates AMPK, inhibits mitochondrial complex I, modulates gut microbiota.
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.
~5 hours; bioavailability ~5%.
Standard berberine has ~5% oral bioavailability. Dihydroberberine and berberine phytosomes absorb better. Split doses across meals (500 mg × 3) to avoid GI upset.
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
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.
Regulatory events, evidence grade changes, and key research milestones for Berberine, most recent first. Studies link to the paper; regulatory entries name and link the responsible authority.
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.
Verified 2026-06-20. We update this section as new peer-reviewed trials land.
Berberine's strongest evidence is for glycemic control in type 2 diabetes. Jing Wang and colleagues' 2024 meta-analysis 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 meta-analysis 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).
Marketing often calls berberine 'nature's Ozempic' or claims it matches metformin outright. The actual evidence is more nuanced: a 2021 meta-analysis 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 meta-analysis 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/). Berberine'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.
500 mg three times daily with meals (total 1000-1500 mg/day), the dose used in nearly all glycemic and lipid trials
Berberine 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.
500 mg × 3/day for 3 months matched metformin for HbA1c reduction in type 2 diabetes.
Read study →All products in our catalog that contain Berberine, ranked by our overall score. Ranking is editorial, never paid.
DoNotAgeStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
Nootropics DepotStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
Double Wood SupplementsStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
Status as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
ProHealth LongevityStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
Life ExtensionStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
BulkSupplementsStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
Thorne HealthTechStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
Pure EncapsulationsStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
Renue By ScienceStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
Double Wood SupplementsStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
Renue By ScienceStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
FrishanticStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
ViViYouthMulti-ingredient bundle
Status as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
Molecules in the same class, plus the actives most often formulated alongside Berberine in our catalogue.
See Berberine in context: the mechanism it acts through, the biomarker it moves, the products that dose it, and the trials that tested it.
View Berberine on the Longevity Map →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.
The trial dose in published human studies is 1500 mg per day, with a range of 900 to 1500 mg per day. Always consult a qualified clinician before starting any supplement.
No formal UL established; generally regarded as safe up to ~1.5 g/day for up to 6 months, but is a significant inhibitor of multiple CYP enzymes even at moderate doses (as low as 300 mg/day).
We track 14 products containing Berberine. The top-ranked product scores 9.1 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.
Berberine 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.
Evidence grades are reviewed when new human RCTs are published. Product counts update automatically as new products are added. Dose ranges reflect published trial data, not brand recommendations. Read how we verify.