Home Ingredients Citrus Bergamot (Citrus bergamia)
CardiovascularMetabolic Health

Citrus Bergamot (Citrus bergamia)

Citrus bergamia
Evidence Level
Strong
3 Clinical Trials
7 Documented Benefits
4/5 Evidence Score

Citrus bergamot (Citrus bergamia) is a sour orange variety grown almost exclusively in the Calabria region of southern Italy, containing a unique profile of polyphenols — particularly brutieridin and melitidin — not found in any other citrus fruit. These compounds inhibit HMG-CoA reductase (the same enzyme target as statin drugs) while simultaneously activating AMPK, producing clinically meaningful reductions in LDL cholesterol (~24-36%) and triglycerides (~30-39%). The standardized polyphenolic extract (bergamot polyphenolic fraction or BPF) is distinct from bergamot essential oil used for flavoring. Strong evidence for cholesterol/triglyceride reduction, glycemic improvement, and metabolic syndrome support. Standardized branded forms available include Bergamonte® (HP Ingredients, ≥38% flavonoids) and Bergamet®. Effects appear within 30 days of consistent use.

Studied Dose 500–1,500 mg/day standardized BPF; lipid-lowering studies typically use 500 mg twice daily (1,000 mg/day); blood sugar studies: 500 mg/day; effects within 30 days. Branded reference doses: Bergamonte® ~600 mg/day, Bergamet® ~1,000 mg/day.
Active Compound Bergamot polyphenolic fraction (BPF) — brutieridin, melitidin, neoeriocitrin, neohesperidin, and naringin. Standardized commercial forms include Bergamonte® (HP Ingredients, standardized to ≥38% flavonoids) and Bergamet®.

Benefits

LDL cholesterol reduction

Multiple Italian RCTs (Mollace 2011, Toth 2016, others) demonstrate standardized BPF at 1,000 mg/day reduces LDL cholesterol by 24-36% — approaching statin-level efficacy for a natural supplement. The brutieridin and melitidin content provides direct HMG-CoA reductase inhibition similar to statin drugs.

Supported by Trial 1

Triglyceride and VLDL reduction

BPF consistently reduces triglycerides by 30-39% across clinical trials — one of the more potent natural triglyceride-lowering ingredients available. VLDL cholesterol is also significantly reduced, addressing comprehensive lipid management.

Supported by Trial 1, Trial 3

HDL cholesterol elevation

Unlike most cholesterol-lowering interventions that reduce LDL without raising HDL, BPF consistently increases HDL cholesterol by 15-40% in clinical trials — a comprehensive lipid panel improvement uncommon with single interventions.

Supported by Trial 3, Trial 1

Blood glucose and insulin resistance improvement

BPF significantly reduces fasting blood glucose, postprandial glucose, HbA1c, and insulin resistance in metabolic syndrome and prediabetic populations. AMPK activation improves skeletal muscle glucose uptake and reduces hepatic gluconeogenesis.

Supported by Trial 1, Trial 3

Statin adjunct (reduces statin doses)

Clinical trials (Gliozzi 2013) show BPF combined with low-dose rosuvastatin (10 mg) is equivalent or superior to higher-dose rosuvastatin (20 mg) alone — suggesting BPF allows lower statin dosing with potentially fewer side effects. Important practical implication for patients with statin intolerance.

Supported by Trial 2

NAFLD / hepatic steatosis support

BPF reduces liver enzymes (ALT, AST, GGT) and hepatic steatosis markers in non-alcoholic fatty liver disease patients. Mechanism: AMPK activation, reduced de novo lipogenesis. Supports use for NAFLD-metabolic syndrome cluster.

Supported by Trial 3

Distinct from bergamot essential oil

Important consumer education: bergamot ESSENTIAL OIL (used in Earl Grey tea flavoring, perfumes) is the photosensitizing aromatic oil from peel — DIFFERENT from the polyphenolic fraction (BPF) used in supplements. BPF does NOT cause photosensitivity; only the essential oil does.

Supported by Trial 1, Trial 2

Mechanism of action

1

HMG-CoA reductase inhibition (statin-like mechanism)

Brutieridin and melitidin — polyphenols unique to Citrus bergamia — contain a hydroxymethylglutaric acid moiety that directly inhibits HMG-CoA reductase, the rate-limiting enzyme in cholesterol synthesis. Same target as statins and red yeast rice.

2

AMPK activation

BPF activates AMP-activated protein kinase (AMPK) via the LKB1 pathway, stimulating fatty acid oxidation, increasing LDL receptor expression, and reducing hepatic gluconeogenesis. Master metabolic regulator effect.

3

PCSK9 inhibition and LDL receptor upregulation

Bergamot flavonoids inhibit PCSK9 (proprotein convertase subtilisin/kexin type 9) — the same target as the newest generation of injectable cholesterol medications (alirocumab, evolocumab). Increases LDL receptor density on hepatocytes.

4

Antioxidant activity

BPF flavonoids (neoeriocitrin, naringin, neohesperidin) are potent antioxidants — protect LDL particles from oxidation, reduce inflammatory markers. Complements the cholesterol-lowering effects with vascular protection.

5

Gut microbiome effects (emerging)

Emerging research: BPF polyphenols modulate gut microbiome composition, increase short-chain fatty acid producers — additional metabolic benefit pathway beyond direct enzyme inhibition.

Clinical trials

1
Bergamot Polyphenol Fraction in Hyperlipidemia and Metabolic Syndrome — Mollace 2011

Foundational RCT establishing BPF as effective cholesterol agent. BPF dose-dependently reduced LDL cholesterol (by 24-36% in 1,000 mg group), triglycerides (30-39%), and increased HDL (22-40%) vs placebo. Fasting plasma glucose reduced 15-22%. The 1,000 mg dose showed strongest effects.

2
Bergamot + Statin Combination — Gliozzi 2013

Combined low-dose rosuvastatin + bergamot produced LDL reductions comparable to high-dose rosuvastatin alone (-52% combination vs -57% high-dose statin), with greater reductions in oxidative stress markers. Demonstrates synergy and dose-reduction potential.

3
Bergamot Polyphenols for NAFLD — RCT

Bergamot extract significantly reduced hepatic steatosis on ultrasound, decreased ALT and AST, and improved lipid profile and fasting glucose vs placebo. Supports bergamot for the NAFLD-metabolic syndrome cluster, addressing a common clinical pattern.

Side effects and drug interactions

Common Potential side effects

Generally very well tolerated; no myopathy, liver toxicity, or CoQ10 depletion unlike pharmaceutical statins.
Mild GI effects (nausea, heartburn) in small percentage — take with food.
Headache rare.
Photosensitivity — BPF (polyphenolic extract) does NOT cause photosensitivity; only bergamot ESSENTIAL OIL (different product) does.
Bergamot juice/essential oil contains bergapten (a furanocoumarin) — standardized supplemental extracts have reduced bergapten levels; use caution with photosensitizing medications if combining with bergamot juice.

Important Drug interactions

Statins — synergistic; LOWER statin doses may be possible with BPF combination; consult cardiologist before adjusting prescription. Monitor lipid panel and for muscle side effects.
CYP3A4 substrates — bergamot may inhibit CYP3A4; may increase blood levels of statins, calcium channel blockers, immunosuppressants; separate dosing.
Anticoagulants (warfarin) — CYP2C9 inhibition may increase warfarin levels; monitor INR.
Antidiabetic medications — additive glucose-lowering; monitor blood sugar closely.
Antihypertensives — modest BP reduction; monitor.
CYP-metabolized drugs — bergamot polyphenols may modestly affect CYP enzymes; theoretical interactions.
FUROCOUMARINS in bergamot oil (NOT BPF) — strong CYP3A4 inhibitors; bergamot essential oil and possibly low-quality BPF products may interact with statins, immunosuppressants, calcium channel blockers, and other CYP3A4 substrates.
Featured In

Symptom-specific supplement guides

🍬Best Supplements for Blood Sugar🩸Best Supplements for High Cholesterol

More Cardiovascular Ingredients

Cardiovascular
Niacin
Niacin, or vitamin B3, is a vital nutrient that supports energy production by serving as a…
Cardiovascular
Omega-3 Fatty Acids
Omega-3 fatty acids, primarily eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), an…
Cardiovascular
Potassium
Potassium is the most abundant intracellular cation in the human body and an essential min…
Cardiovascular
Pycnogenol® (French Maritime Pine Bark)
Pycnogenol® (Horphag Research) is a standardized extract from the bark of French maritime…

Explore Other Ingredients

Athletic Performance
Senactiv®
Senactiv® (formerly ActiGin®) is NuLiv Science's patented senolytic sportsceutical — a hig…
Antioxidant
NAC (N-Acetylcysteine)
NAC (N-Acetyl Cysteine) is a supplemental form of the amino acid cysteine, best known for…
Athletic Performance
L-Carnitine
L-Carnitine is a naturally-occurring amino acid derivative essential for fatty acid metabo…

Frequently asked questions about Citrus Bergamot (Citrus bergamia)

What is Citrus Bergamot (Citrus bergamia)?

Citrus bergamot (Citrus bergamia) is a sour orange variety grown almost exclusively in the Calabria region of southern Italy, containing a unique profile of polyphenols — particularly brutieridin and melitidin — not found in any other citrus fruit.

What does Citrus Bergamot (Citrus bergamia) do?

Brutieridin and melitidin — polyphenols unique to Citrus bergamia — contain a hydroxymethylglutaric acid moiety that directly inhibits HMG-CoA reductase, the rate-limiting enzyme in cholesterol synthesis. Same target as statins and red yeast rice. In clinical research, Citrus Bergamot (Citrus bergamia) has been studied for ldl cholesterol reduction, triglyceride and vldl reduction, hdl cholesterol elevation.

Who should take Citrus Bergamot (Citrus bergamia)?

Citrus Bergamot (Citrus bergamia) may be most relevant for people interested in cardiovascular, metabolic health. It has been clinically studied for ldl cholesterol reduction, triglyceride and vldl reduction, hdl cholesterol elevation. As with any supplement, consult your healthcare provider before starting, especially if you have medical conditions or take prescription medications.

How long does Citrus Bergamot (Citrus bergamia) take to work?

Most clinical trial effects appear over weeks of consistent use; individual response varies. Acute or same-day effects (where applicable) typically appear within hours, but most cumulative benefits — particularly those affecting biomarkers, mood, sleep quality, or chronic symptoms — require 4-12 weeks of regular use to fully assess. If you don't notice benefit after 12 weeks at the appropriate dose, it may not be your responder.

When is the best time to take Citrus Bergamot (Citrus bergamia)?

For cardiovascular or metabolic goals, Citrus Bergamot (Citrus bergamia) is typically taken with meals to support absorption and reduce GI sensitivity. Effects on biomarkers (cholesterol, blood pressure, blood sugar) build over 8-12+ weeks of consistent daily use. Always check product labeling and follow personalized guidance from your healthcare provider.

Is Citrus Bergamot (Citrus bergamia) worth taking?

Citrus Bergamot (Citrus bergamia) has strong clinical evidence (Evidence Level 4/5 on NutraSmarts) for its primary uses, with multiple randomized controlled trials and meta-analyses supporting its benefits. Whether it's worth taking depends on your specific goals, what you've already tried, your budget, and your overall supplement strategy. The honest framing: no supplement is essential for most people, and lifestyle factors (sleep, exercise, diet, stress management) typically produce larger effects than any single supplement. Citrus Bergamot (Citrus bergamia) is most worth trying if its evidence-supported uses align with your specific goals.

What is the recommended dosage of Citrus Bergamot (Citrus bergamia)?

The clinically studied dose for Citrus Bergamot (Citrus bergamia) is 500–1,500 mg/day standardized BPF; lipid-lowering studies typically use 500 mg twice daily (1,000 mg/day); blood sugar studies: 500 mg/day; effects within 30 days. Branded reference doses: Bergamonte® ~600 mg/day, Bergamet® ~1,000 mg/day.. Always follow product labeling and consult a healthcare provider for personalized dosing recommendations.

What is Citrus Bergamot (Citrus bergamia) used for?

Citrus Bergamot (Citrus bergamia) is studied for ldl cholesterol reduction, triglyceride and vldl reduction, hdl cholesterol elevation. Multiple Italian RCTs (Mollace 2011, Toth 2016, others) demonstrate standardized BPF at 1,000 mg/day reduces LDL cholesterol by 24-36% — approaching statin-level efficacy for a natural supplement.