Citrus Bergamot: Benefits, Dosage, and Side Effects
Updated: 6 days ago
Citrus bergamot (Citrus bergamia) is a citrus fruit grown primarily in southern Italy. Its peel and juice contain flavonoids and other compounds that have been studied for effects on cholesterol and metabolic health. Most research focuses on standardized extracts rather than the whole fruit or essential oil.
What Is Citrus Bergamot?
Bergamot is a hybrid citrus related to bitter orange and lemon. The essential oil from the peel is widely used in aromatherapy and as a flavoring in Earl Grey tea. For metabolic support, supplements typically use concentrated polyphenol-rich extracts from the fruit or peel.
Potential Benefits Based on Recent Research
Cholesterol and Lipid Levels
Several clinical trials and reviews have examined bergamot extracts for lipid management. A 2024 randomized, double-blind, placebo-controlled trial in adults with elevated cholesterol found that a standardized bergamot flavonoid extract (150 mg/day) reduced total cholesterol by 8.8% and LDL cholesterol by 11.5% over four months, with a favorable trend in HDL. A 2020 systematic review of human studies reported that the majority of trials showed decreases in total cholesterol, LDL cholesterol, and triglycerides, with some increases in HDL. More recent analyses have also noted improvements in these markers, though study quality and effect sizes vary.
Waist Circumference and Body Composition
A 2026 systematic review and meta-analysis of randomized controlled trials found that supplements containing Citrus bergamiaĀ were associated with reductions in body weight, BMI, and waist circumference, particularly at doses of 600 mg/day or less and over periods of 12 weeks or shorter. Effects on other body composition measures were less consistent.
Blood Sugar and Other Markers
Some trials have reported modest improvements in fasting glucose, insulin resistance markers, and systolic blood pressure. Evidence in these areas is more limited than for lipids and comes primarily from smaller or mixed-quality studies.
Overall, the strongest and most consistent findings relate to cholesterol and triglyceride levels. Results are generally modest and appear more reliable with standardized extracts than with whole-fruit products or tea.
Recommended Dosage
Clinical studies have used a range of doses:
Standardized bergamot flavonoid extracts: commonly 150ā500 mg per day
Broader bergamot fruit or peel extracts: 500ā1,000 mg per day
Most trials lasted 4ā12 weeks. Taking the supplement with food may improve tolerability. Because products vary widely in standardization and flavonoid content, follow the label of a specific product and consult a healthcare professional for personalized guidance.
Side Effects
Bergamot extracts are generally well tolerated in short-term studies. The most commonly reported side effects are mild and digestive, such as heartburn or stomach discomfort. Essential oil applied to the skin can cause photosensitivity (increased risk of sunburn) and should not be used before sun exposure. High intakes of bergamot oil (for example, from large amounts of Earl Grey tea) have been linked to rare muscle-related symptoms in case reports.
Precautions and Who Should Use Caution
People taking statin medications or other drugs metabolized by CYP3A4 should consult a healthcare professional, as interactions are possible.
Avoid concentrated extracts or essential oil during pregnancy and breastfeeding due to limited safety data.
Do not use bergamot essential oil topically before sun exposure.
Individuals with citrus allergies should avoid bergamot products.
Those preparing for surgery or managing blood sugar with medication should discuss use with a clinician.
Frequently Asked Questions
Does citrus bergamot lower cholesterol?
Yes. Multiple clinical trials and reviews show modest reductions in total cholesterol, LDL cholesterol, and triglycerides with standardized extracts.
What is a typical dose of citrus bergamot extract?
Studies most often use 150ā1,000 mg per day of extract, depending on standardization. A common research dose for flavonoid-standardized products is around 150ā500 mg daily.
Are there side effects?
Most people tolerate it well. Mild heartburn or digestive discomfort can occur. Essential oil can increase sun sensitivity if applied to the skin.
Can I take citrus bergamot with statins?
Some research suggests possible additive effects, but interactions are possible. Speak with a healthcare professional before combining them.
Conclusion
Citrus bergamot extracts, particularly standardized forms rich in flavonoids, have been studied for modest improvements in cholesterol, triglycerides, and certain metabolic markers. Evidence is strongest for lipid levels and is based primarily on short-term trials. As with any supplement, quality varies between products, and professional medical advice is recommended before use, especially for people taking medications or managing health conditions.
References
Spina A, et al. Citrus bergamiaĀ Extract, a Natural Approach for Cholesterol and Lipid Metabolism Management: A Randomized, Double-Blind Placebo-Controlled Clinical Trial. Foods.Ā 2024;13(23):3883.
Effect of bergamot on lipid profile in humans: A systematic review. Critical Reviews in Food Science and Nutrition.Ā 2020;60(18):3133ā3143.
Effect of Citrus bergamiaĀ Supplementation on Body Composition in Humans: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Obesity Reviews.Ā 2026.
Bergamot (Citrus bergamia) Supplementation and Cardiovascular Disease Risk Factors: A Systematic Review and Meta-Analysis.
https://doi.org/10.1111/obr.70094Ā (related review data)
WebMD. Bergamot: Overview, Uses, Side Effects, Precautions, Interactions, Dosing and Reviews.
https://www.webmd.com/vitamins/ai/ingredientmono-142/bergamot
