Berberine: What It Is, Benefits and How to Take

Berberine is a bioactive plant-derived compound that has been widely studied for its potential role in metabolic health. It is naturally found in various plants of the genus Berberis and belongs to the group of alkaloids.

In recent decades, scientific research has explored its effects on blood glucose regulation, lipid metabolism, and insulin sensitivity. While the results are promising, many of the observed benefits are still under investigation and do not replace medical treatment.

What is Berberine?

Berberine is a natural alkaloid present in various plant species, including plants of the genus Berberis. It has been used for centuries in traditional Asian medicine, and currently, it is one of the most studied natural compounds in the field of metabolic health.

Research suggests that berberine can influence various cellular processes related to energy metabolism, which is why it is often used as a dietary supplement by people who want to complement a healthy lifestyle.

How does Berberine act in the body?

Berberine has been studied for its ability to influence an enzyme called AMP-activated protein kinase (AMPK).

AMPK acts as an important regulator of cellular metabolism, participating in energy production, glucose utilization, and lipid metabolism.

Laboratory studies suggest that berberine can activate this metabolic pathway, influencing various processes related to energy metabolism. However, the complexity of these mechanisms means that its clinical effects are still being investigated.

What are the health benefits of Berberine?

Scientific research has evaluated the use of berberine in various areas of metabolic health. While many results are promising, not all are sufficiently established to constitute authorized health claims.

Blood glucose control

Several clinical trials demonstrate that berberine can contribute to improving parameters related to glucose metabolism in people with type 2 diabetes or insulin resistance.

Some systematic reviews have observed improvements in fasting blood glucose levels and glycated hemoglobin (HbA1c). However, these results do not mean that berberine replaces prescribed medications.

Insulin sensitivity

Research suggests that berberine may improve insulin sensitivity through various metabolic mechanisms, making this one of the most studied areas.

Lipid profile

Several studies suggest that berberine supplementation may contribute to improving some markers of the lipid profile, including:

• Total cholesterol;
• LDL cholesterol;
• Triglycerides;
• HDL cholesterol.

The proposed mechanisms include changes in cholesterol metabolism and the expression of certain proteins involved in its regulation.

Weight management

Some clinical studies have shown small reductions in body weight, body mass index (BMI), and abdominal circumference in individuals who are overweight or obese.

These effects seem to be related to improvements in insulin sensitivity and energy metabolism, and supplementation should always be accompanied by a balanced diet and regular physical exercise.

Non-alcoholic fatty liver

Berberine has been studied in people with non-alcoholic fatty liver disease (NAFLD).

Some studies have observed improvements in certain markers of liver function and lipid metabolism, although more studies are needed to confirm these results.

Why is it often associated with Chromium and Turmeric?

Some supplements combine berberine with other ingredients studied for metabolic health.

Chromium

Chromium is an essential trace element that contributes to the maintenance of normal blood glucose levels and to the normal metabolism of macronutrients, according to the health claims authorized by the European Food Safety Authority (EFSA).

Turmeric

Turmeric contains curcuminoids, natural compounds widely studied for their antioxidant properties and their potential role in inflammatory response. Despite scientific interest, there are currently no health claims authorized by EFSA for turmeric.

Who might consider Berberine supplementation?

Berberine is often used by adults who wish to supplement strategies related to metabolic health, particularly in situations such as:

• Insulin resistance;
• Type 2 diabetes (always under medical supervision);
• Overweight or obesity;
• Polycystic Ovary Syndrome (PCOS);
• High cholesterol;
• High triglycerides;
• Non-alcoholic fatty liver disease.

Supplementation should always be discussed with a healthcare professional, especially when there are chronic illnesses or medication is being taken.

What is the usual dose?

In clinical studies, the most frequently used doses range from 900 mg to 1500 mg per day, usually divided into two or three doses before meals.

The appropriate dose may vary depending on the objective of supplementation, health status, and the assessment of a healthcare professional.

What are the possible side effects of Berberine?

Berberine is generally considered well-tolerated when used at commonly studied doses.

The most frequently reported side effects include:

• Diarrhea;
• Constipation;
• Abdominal distension;
• Flatulence;
• Gastrointestinal discomfort.

In most cases, these symptoms are mild and tend to decrease with continued use or dose adjustment.

Who should avoid Berberine?

Berberine supplementation is not recommended for:

• Pregnant women;
• Breastfeeding women;
• Children, unless medically indicated.

People taking medication for diabetes, hypertension, cholesterol, or anticoagulants should consult their doctor before starting supplementation, due to the potential risk of drug interactions.

Conclusion

Berberine is a natural compound widely studied for its potential role in metabolic health. Research suggests benefits in blood glucose regulation, insulin sensitivity, lipid profile, and weight management in certain groups of people.

However, scientific evidence is still evolving, and berberine does not replace medical treatments, a balanced diet, or a healthy lifestyle.

Supplementation should be individualized and preferably carried out with the guidance of a healthcare professional.

The information presented in this article is for informational purposes only and does not replace medical advice. Dietary supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.

References

Neag, M.A. et al. (2018) 'Berberine: Botanical occurrence, traditional uses, extraction methods, and relevance in cardiovascular, metabolic, hepatic, and renal disorders', Frontiers in Pharmacology, 9, 557.

Herzig, S. and Shaw, R.J. (2018) 'AMPK: Guardian of metabolism and mitochondrial homeostasis', Nature Reviews Molecular Cell Biology, 19(2), pp. 121–135.

Jin, Y. et al. (2017) 'Berberine enhances AMPK activation and autophagy and mitigates high glucose-induced apoptosis of mouse podocytes', European Journal of Pharmacology, 794, pp. 106–114.

Xu, X. et al. (2021) 'Therapeutic effect of berberine on metabolic diseases: Both pharmacological data and clinical evidence', Biomedicine & Pharmacotherapy, 133, 110984.

Xie, W. et al. (2022) 'Glucose-lowering effect of berberine on type 2 diabetes: A systematic review and meta-analysis', Frontiers in Pharmacology, 13, 1015045.

Cicero, A.F.G. and Baggioni, A. (2016) 'Berberine and its role in chronic disease', Advances in Experimental Medicine and Biology, 928, pp. 27–45.

Yin, J. et al. (2008) 'Efficacy of berberine in patients with type 2 diabetes mellitus', Metabolism, 57(5), pp. 712–717.

Wei, X. et al. (2016) 'Effects of berberine on obesity and metabolic syndrome: A systematic review', Evidence-Based Complementary and Alternative Medicine, 2016, 1–10.

European Food Safety Authority (EFSA) (2012) EU Register of Nutrition and Health Claims. (Chromium: contributes to the maintenance of normal blood glucose levels and to normal macronutrient metabolism.)