Berberine vs Bergamot
Written by Aaron CuhaReviewed Sep 2026
The short answer
Two supplements sold for cholesterol, with reported effects that are too big to believe and the same basic problem. The trials are small and come from a few regions, and neither has a trial of real health results.
- Berberine people
- 186
- Berberine nulls
- 0
- Bergamot people
- 0
- Bergamot nulls
- 0
Dose
No human dose established
Amounts that were given in studies sit in Human evidence on this page. None of them is a personal dose.
3 completed trials, 186 people given it
Dose
No human dose established
No published study on this page has given this compound to people and reported a result.
no study cited on this page yet
First-hand reports are counted on each profile and never added together. This page sets two published records side by side. It does not pick a winner.
Column A
BerberineBerberine hydrochloride
Across 46 studies, berberine lowered average blood sugar (HbA1c) by 0.73 points. In a small head-to-head test, it lowered blood sugar about as well as metformin. No study has measured heart attacks or deaths, most studies are small and from one region, and a third of patients get stomach upset.
Column B
BergamotCitrus bergamia polyphenol extract
Fourteen small studies show big drops in blood fats, including LDL (bad) cholesterol down 55 mg/dL. That is a surprisingly large effect for a fruit extract. The studies are small, mostly from one region, and none has measured heart attacks or strokes.
Side by side, on the facts we can check
| What we compare | Berberine | Bergamot |
|---|---|---|
| Category | Metabolic | Metabolic |
| FDA status | Sold as a dietary supplement in the United States. Not approved for diabetes or any other use. Used as a prescription diarrhoea medicine in some other countries. | Sold as a dietary supplement. Not approved to treat unhealthy cholesterol and blood fat levels, or anything else. |
| Half-life | Systemically short with very low oral bioavailability, under 1%, which is why it is dosed two or three times a day with meals. Active metabolites including berberrubine circulate longer than the parent compound. | Not well characterised in humans. Citrus flavanones are extensively metabolised by gut microbiota and conjugated in the liver, and plasma appearance of metabolites differs substantially between people. |
| Molecular weight | 336.4 Da as the free base, 371.8 Da as the hydrochloride. | Not a single molecule. A standardised polyphenol extract, and products differ in flavanone content, which is the main reason results may not transfer between them. |
| How it works | Berberine is a plant compound. It switches on AMPK, the cell's fuel sensor, which is the same switch metformin works through. It does this by slightly slowing the cell's energy factories, the mitochondria. That makes cells take up more sugar, makes the liver release less sugar, and cuts fat-making. It also raises the number of LDL receptors, which pull bad cholesterol out of the blood, by a different route than statins. And it changes the mix of gut bacteria. Less than 1% of a swallowed dose reaches the blood. So much of its effect likely happens in the gut, or through what the body breaks it down into. | The extract is rich in plant compounds called flavanones, mainly brutieridin and melitidin. Part of their shape looks like the working part of a statin. That led to the idea that bergamot partly blocks the same enzyme statins block, like a weak statin. Other ideas: it may switch on an energy sensor in cells (AMPK), and it may cut how much cholesterol your gut absorbs. The statin-like idea is a guess based on shape, backed by lab and animal work. It has not been shown in people. |
| Studies in people | 3 | 0 |
| Evidence | Moderate: 3 completed trials, 186 people given it | None: no study cited on this page yet |
| Legal status, US | Sold as a supplement | Sold as a supplement |
Frequently asked questions
What is the difference between Berberine and Bergamot?
Berberine: Across 46 studies, berberine lowered average blood sugar (HbA1c) by 0.73 points. In a small head-to-head test, it lowered blood sugar about as well as metformin. No study has measured heart attacks or deaths, most studies are small and from one region, and a third of patients get stomach upset. Bergamot: Fourteen small studies show big drops in blood fats, including LDL (bad) cholesterol down 55 mg/dL. That is a surprisingly large effect for a fruit extract. The studies are small, mostly from one region, and none has measured heart attacks or strokes.
Which has stronger research evidence, Berberine or Bergamot?
Each compound gets a band worked out from facts we counted, with the math shown. Berberine is Moderate (3 completed trials, 186 people given it). Bergamot is None (no study cited on this page yet). That counts how much has been done in people. It does not rate whether either one works, and neither one is called the winner.
Are Berberine and Bergamot FDA-approved?
Berberine: Sold as a dietary supplement in the United States. Not approved for diabetes or any other use. Used as a prescription diarrhoea medicine in some other countries.. Bergamot: Sold as a dietary supplement. Not approved to treat unhealthy cholesterol and blood fat levels, or anything else..
Reviewed Sep 2026. This page puts two published records side by side. It is for learning, and it is not medical advice. When this site shows a dose, it is the dose a trial or a clinic actually used, or what people say they did, with the source attached. None of it tells you what to take.