Citrus Bergamot
A polyphenol fraction from the Calabrian bergamot orange whose flavonoids — brutieridin and melitidin — carry a statin-like moiety that modulates HMG-CoA reductase. The best-supported natural option for lowering LDL and ApoB, with a meta-analysis behind it, as long as you read the effect sizes honestly: this is a fraction of statin potency, not a statin replacement.
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BiohackingHub Research TeamEditorial Research Team · Last updated: August 19, 2026
Medical Disclaimer: The information on this page is for educational and research purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment.
Why Bergamot Is Interesting
Most "cholesterol support" supplements are antioxidant stories with weak lipid data. Bergamot is different for one structural reason: two of its flavonoids, brutieridin and melitidin, carry a 3-hydroxy-3-methylglutaryl (HMG) moiety — the same chemical group that lets statins occupy HMG-CoA reductase, the rate-limiting enzyme of cholesterol synthesis. Bergamot is, quite literally, the plant that makes a weak natural statin.
That gives it a mechanistic claim on LDL cholesterol and ApoB — the particle-count marker covered in ApoB and Lp(a): the markers that matter — rather than just triglycerides or "oxidation".
The Evidence
Meta-analysis (2022). A systematic review and meta-analysis of randomised trials found significant reductions in total cholesterol, LDL-C, and triglycerides with bergamot supplementation. Typical LDL reductions across trials cluster around 15–25% — meaningful, though trial quality varies and several trials share investigators with industry ties. Grade the evidence B, not A.
The sdLDL and subclinical atherosclerosis trial (2015). In subjects with moderate hypercholesterolaemia, bergamot polyphenol fraction reduced plasma lipids, shifted LDL subfractions away from small dense particles, and reduced carotid intima-media thickness over 6 months. The particle-subfraction shift is the most distinctive finding — it suggests the benefit is qualitative as well as quantitative.
Early human work (2011). The original Calabrian studies reported LDL reductions up to 30–40% at 1,000 mg/day of the polyphenol fraction. These numbers have not been consistently replicated at that magnitude — anchor expectations to the meta-analytic estimate, not the best-case trial.
What bergamot does not do: it does not meaningfully lower Lp(a) (nothing over-the-counter does), and it has never been tested against cardiovascular events. It is a biomarker intervention with a plausible mechanism — several steps short of outcome-proven.
Dosing and Standardisation
Trials used the bergamot polyphenol fraction (BPF) standardised to 38–40% polyphenols, mostly at 500–1,300 mg/day, taken before meals.
| Label | What it means |
|---|---|
| "Bergamot extract 1000 mg" | Meaningless without a polyphenol percentage |
| "38% polyphenols" / "BPF" | The standard used in the positive trials |
| "Bergamonte / BPF 99" | Branded forms matching the trial material |
Practical target: 1,000 mg/day of a 38%+ standardised extract, retesting a lipid panel plus ApoB at 12 weeks.
Safety
Bergamot is one of the better-tolerated compounds in the cardiovascular space — trials up to 12 months report adverse events at placebo rates, with occasional heartburn the main complaint. Two flags worth knowing:
- This is not grapefruit. The fruit-extract supplement has not shown the CYP3A4 interaction that makes grapefruit juice dangerous with statins, but formal interaction studies are sparse — coordinate with the prescriber if you take a narrow-index drug.
- Statin combination is common and intentional — bergamot has been studied as an add-on allowing lower statin doses. That decision belongs to the prescribing physician, not the supplement aisle.
Related Research
Stacking Interactions
How Citrus Bergamot interacts with other compounds
Protocols using Citrus Bergamot
Evidence-graded stacks that include this compound
Safety Profile — Tier A
Well-tolerated — strong human evidence
Contraindications
- ●Known citrus allergy
- ●Pregnancy and breastfeeding — insufficient data on concentrated extracts
Side Effects
- ●Occasional heartburn or mild gastrointestinal discomfort
- ●No serious adverse events reported in trials up to 12 months