Discover the Power of Berberine: Aids in Weight Loss, Sugar Regulation, and PCOS

Berberine is a dietary supplement that has recently gained significant attention, whether on social media or among scientists. It’s often discussed in relation to weight loss, blood sugar regulation, and even earned the nickname “natural Ozempic”. But what do we really know about it? Are its effects backed by scientific studies, or is it just another trend? In this article, we’ll look at how berberine works, what its proven effects are, and who it can truly benefit.

In the article, you will learn about the influence of berberine on these areas:

What is Berberine?

Berberine is a natural alkaloid found in the largest amounts in plants such as Indian barberry (Berberis aristata) or Chinese goldthread (Coptis chinensis). These plants have a thousand-year tradition in Chinese and Ayurvedic medicine, where they were used, for example, to treat infections, inflammations, or digestive issues. At that time, however, no one knew that a specific substance was responsible for their effects. Berberine had not yet been isolated, so entire parts of the plants were used, most commonly the root or bark. ^[1–2]

From the perspective of modern science, we discovered berberine relatively recently. In its chemically pure form, it was first isolated in 1917 from the Canadian goldenseal (Hydrastis canadensis). Chemically, it belongs to alkaloids, which are organic compounds containing nitrogen commonly found in plants. Other examples include caffeine or nicotine. ^[3]

Interestingly, berberine has a distinct yellow colour. Because of this, it was historically used as a natural dye for textiles and leather. Although synthetic substances have replaced it in this role today, it is still used in laboratories as a fluorescent dye, for example, when staining DNA under UV light. When taking dietary supplements with berberine, it may cause the stool to turn yellow, which is a harmless phenomenon. ^[4]

What Causes the Effects of Berberine?

In recent years, berberine has been discussed mainly in connection with weight loss, blood sugar control (glycemia), and overall metabolic health. At first glance, it might seem like just another short-term trend. However, berberine has interested scientists for many years due to its action on key cellular mechanisms. It affects so-called high-level regulators of energy balance, such as the enzyme AMPK (adenosine monophosphate-activated protein kinase), PKC (protein kinase C), and SIRT1 (sirtuin 1). These molecules play a crucial role in managing metabolism, immune functions, and inflammatory processes.^[5]

Thanks to this complex action, berberine may have interesting effects not only on people with problems in these areas but also on healthy individuals as part of a healthy lifestyle. Let’s take a closer look at what current science says about its effects.

What are the Health Effects of Berberine?

1. It may Help with Fat Burning and Weight Loss

Berberine and weight loss are discussed on social media as well as in professional circles. Some scientific studies also demonstrate this. According to them, it may contribute to reducing body fat, BMI (Body Mass Index), and waist circumference, even without significant dietary changes. These effects are mainly due to the activation of the AMPK enzyme, which increases energy expenditure in cells and supports fat burning. ^[6–8]

Effects of Berberine on Body Weight According to Studies:

• may help reduce weight and waist circumference
• contributes to improving the waist-to-hip ratio (WHR), which is related to visceral fat storage
• activates the AMPK enzyme and accelerates fat metabolism
• may be particularly useful for people with overweight, obesity, insulin resistance, or metabolic syndrome

This potential is confirmed, for example, by a meta-analysis of 12 clinical studies involving more than 1,000 participants, which recorded an average weight loss of 2.07 kg, reduction in BMI by 0.47 points, decrease in waist circumference by 1.08 cm, and a drop in the inflammatory marker CRP by 0.42 mg/l compared to the control group. ^[7]

On the other hand, there are also studies that did not show a significant impact on weight. For example, a review from 2020 did not find changes in body weight or BMI, only an improvement in the waist-to-hip ratio. This indicates that there is not yet enough strong evidence for definitive conclusions. ^[8]

You might be interested in these products:

2. It may Support Glucose Metabolism and Reduce Insulin Resistance

One of the most well-researched effects of berberine is its ability to influence blood sugar (glucose) levels in the blood. Therefore, it is also used as a natural dietary supplement for diabetes. This effect is also important for other people who are trying to maintain stable glycemia, thereby preventing energy fluctuations and subsequent cravings for sweets.

According to Studies, Berberine Has these Antidiabetic Effects:

• improves cell sensitivity to insulin
• reduces glucose absorption from the intestine and promotes its utilisation in muscles
• may slightly increase insulin secretion in the pancreas

The key role is played by the activation of the AMPK enzyme, which increases cellular energy expenditure and improves sugar management. ^[9–11]

Berberine vs. Metformin: Do They Have Similar Effects?

Berberine is sometimes compared to metformin, a common drug for type 2 diabetes. According to one clinical study, taking 500 mg of berberine three times a day for three months led to a reduction in fasting glucose levels from 10.6 to 6.9 mmol/l, a decrease in glycated haemoglobin (HbA1c), and an improvement in insulin resistance. These results were comparable to the group taking the same dose of metformin. ^[9]

However, it is important to remember that metformin is a drug with well-documented safety and efficacy. Berberine, on the other hand, is a dietary supplement, and its long-term impact on health and metabolism is not yet as thoroughly researched. If it is to be part of treatment, for example, for diabetes or insulin resistance, it is advisable to always consult a doctor.

Can Berberine Help with PCOS?

Due to the aforementioned effects, berberine is also being studied in connection with other conditions associated with insulin resistance, such as polycystic ovary syndrome (PCOS). Studies show that in women with PCOS, it may help improve insulin sensitivity, ovulation regularity, and the levels of certain hormones. However, the authors of the studies on berberine and hormonal balance point out that further studies are needed to confirm the effects of berberine for women with PCOS. ^[18–19]

3. It may Improve Fat Metabolism and Lower Cholesterol Levels

Berberine is known not only for its effects on blood sugar regulation but also for its positive impact on fat (triglyceride) and cholesterol metabolism. This effect is important for preventing cardiovascular diseases and supporting overall metabolic health.

Effects of Berberine on Fat Metabolism According to Studies:

• may reduce cholesterol production in the liver due to its influence on liver enzymes
• can increase the breakdown of LDL (Low Density Lipoprotein) cholesterol, also known as “bad cholesterol”, from the bloodstream
• supports the breakdown of fat (triglycerides) and reduces their storage in the liver

The positive impact of berberine on blood lipid levels is also confirmed by a meta-analysis of 11 randomised clinical studies. The results showed that berberine supplementation led to a significant reduction in:

• total cholesterol by an average of 0.61 mmol/l
• triglycerides by 0.50 mmol/l
• LDL cholesterol by 0.65 mmol/l

At the same time, there was a slight but statistically significant increase in HDL (High Density Lipoprotein) cholesterol, also known as “good cholesterol”, by 0.05 mmol/l. However, the authors note that the quality of the included studies was mostly low, and further high-quality research on a larger sample of people is needed to determine the effect of berberine on lipid levels more accurately. ^[12]

Interesting results were also brought by a study published in the journal Metabolism. Two months of taking 1 g of berberine daily led to a 25.9% reduction in glycemia, HbA1c (glycated haemoglobin, which is a long-term indicator of blood sugar levels) by 18.1%, and triglycerides by 17.6%. In people with liver damage, liver enzymes ALT and γ-GT also improved, indicating improved liver function. ^[13]

However, it is important to note that berberine is not a drug but a dietary supplement for a healthy lifestyle. It does not replace professional medical care or prescribed treatment.

If you’re also interested in what causes high cholesterol and what else can help lower it, you can find out in the article What Causes High Cholesterol and How Can You Lower It?

4. It Has Anti-Inflammatory Properties

In studies focusing on the properties of berberine, its anti-inflammatory effects are often mentioned. Inflammation itself is not always harmful; it is a natural defensive reaction of the body. However, if it lasts too long, it can contribute to the development of chronic diseases such as type 2 diabetes, cardiovascular diseases, or obesity. This is where berberine can play an interesting role, as scientific knowledge suggests that it can influence inflammatory processes in the body in several ways.

Anti-Inflammatory Effects of Berberine According to Studies:

• According to studies, it reduces the level of inflammatory markers in the blood, such as C-reactive protein (CRP), which is one of the main indicators of inflammation in the body. ^[14]
• It can reduce the production of inflammatory cytokines (IL-1β, IL-6, TNF-α) and regulate inflammatory signalling pathways (NF-κB, MAPK, STAT1). This can positively affect the cellular environment in the body, thus alleviating chronic inflammation. ^[15]
• It may contribute to reducing systemic inflammation, which has been demonstrated in studies, for example, in people with metabolic syndrome. ^[5]

These effects are interesting not only from a treatment perspective but also for prevention, especially in people with elevated levels of inflammatory markers without apparent disease. However, it is still true that berberine is not a substitute for medication or a healthy lifestyle, but it can suitably complement overall health care.

5. It may Support Gut Microbiota (Microbiome)

The balance of gut microbiota plays a key role in human metabolic, immune, and mental health. Its disruption (dysbiosis) is associated with a range of problems, such as weakened immunity or inflammatory bowel diseases. Therefore, it is important to take care of your microbiome. Berberine can help with this, as current scientific knowledge suggests it has a beneficial effect on maintaining a healthy gut microbiome.

Effect of Berberine on the Microbiome According to Studies:

• It supports the growth of beneficial bacteria, such as Bacteroides, Bifidobacterium, Lactobacillus, and Akkermansia, while suppressing some potentially harmful species (such as Escherichia coli or Klebsiella pneumoniae). This can be useful, for example, in bacterial overgrowth in the small intestine, known as SIBO (Small Intestinal Bacterial Overgrowth). ^[16]
• It may have prebiotic effects due to its influence on the growth of intestinal bacteria (microbial growth). It has proven particularly effective in combination with probiotics. ^[16–17]
• It contributes to improving the condition of inflammatory bowel diseases, such as ulcerative colitis (UC) or irritable bowel syndrome (IBS).

Due to its effects, berberine can contribute to supporting the balance of the gut microbiome, especially as a supplement to the overall regimen in intestinal dysbiosis. However, in the case of chronic or inflammatory diseases, consult its use with a doctor.

If you want to learn more about the microbiome, read the article What Is the Microbiome and How Can Gut Health Affect Your Physical and Mental Fitness

6. Other Potential Benefits of Berberine

The possibilities of using berberine are also being explored in other areas of human health. Although some effects still require further research, available scientific data suggest that it may also have these benefits:

• It may contribute to lowering blood pressure: Some studies in people with hypertension have recorded a slight decrease in both systolic and diastolic pressure after taking berberine, likely due to its influence on vascular tone and oxidative stress. ^[20]
• It has antioxidant effects: Berberine can neutralise free radicals and reduce oxidative stress, which plays a role in the development of various diseases. ^[21]
• Can affect skin health: Due to its anti-inflammatory and antimicrobial effects, it can be useful as a support for acne. ^[22]
• Its influence on longevity and cellular ageing is being studied: Animal research shows potential life extension and slower ageing, particularly through AMPK pathway activation. However, evidence from human clinical trials is still lacking.

Table: Summary of Berberine Effects

Area of effect	Proven effects	Who may benefit
Body weight regulation	Reduction in body weight, waist circumference, BMI, improvement in waist-hip ratio (WHR)	People with overweight, obesity, metabolic disorders
Glucose and insulin metabolism	Improved insulin sensitivity, reduced blood glucose and HbA1c, AMPK activation	People with insulin resistance, type 2 diabetes, PCOS
Fat and cholesterol metabolism	Reduction in LDL, total cholesterol, triglycerides, increase in HDL	People with high cholesterol, metabolic syndrome
Anti-inflammatory effects	Reduction in CRP, IL-6, TNF-α, influence on inflammatory pathways (NF-κB, MAPK)	People with chronic inflammation
Gut microbiome support	Growth of beneficial bacteria and suppression of harmful ones, potential effect on SIBO, IBS, UC	People with dysbiosis, IBS, ulcerative colitis, SIBO
Blood pressure	Reduction in both systolic and diastolic pressure	People with prehypertension or hypertension
Antioxidant effects	Reduction of oxidative stress, neutralisation of free radicals	People under increased stress, athletes, anti-ageing prevention
Skin health	Anti-inflammatory and antimicrobial effect, support for acne	People with acne or inflammatory skin conditions
Potential impact on longevity	AMPK activation, animal studies suggest slower ageing	Still experimental – potentially in healthy ageing

Berberine Dosage. How to Take it?

• Most commonly taken in the form of capsules, tablets, or tinctures.
• In capsules, it typically comes as Indian barberry root extract with standardised amounts of well-absorbable berberine hydrochloride (berberine HCl), which is why this form can be considered the best berberine supplement.
• Dosage is not officially established, follow the instructions on the specific supplement package.
• Most studies used dosages ranging from 900-2,000 mg daily, divided into 2-3 doses throughout the day.
• Berberine is recommended to be taken with food or shortly after to enhance its effect on blood sugar and fat regulation after meals. ^[2]

Does Berberine Have Side Effects?

Too high a dose of berberine at once can cause digestive issues such as nausea, bloating, or diarrhea. It’s therefore advisable to split larger doses into multiple portions and not to take berberine on an empty stomach. ^[2]

What Should You Remember?

From a scientific perspective, berberine is among the most interesting natural substances with the potential to support health in many areas. Multiple studies confirm its beneficial effects on blood sugar regulation, fat metabolism, weight loss, cholesterol levels, gut microflora balance, and hormonal health in women with PCOS. It can be a valuable supplement to a healthy lifestyle based on balanced nutrition, regular exercise, quality sleep, and mental well-being. However, it’s not a replacement for medication. Therefore, always consult with your doctor about incorporating berberine when dealing with any health issues.

If you liked this article, share it with your friends so they can also learn about the effects of berberine.

Sources:

[1] Abd El-Wahab, A. E., Ghareeb, D. A., Sarhan, E. E., Abu-Serie, M. M., & El Demellawy, M. A. In vitro biological assessment of berberis vulgaris and its active constituent, berberine: Antioxidants, anti-acetylcholinesterase, anti-diabetic and anticancer effects. – https://doi.org/10.1186/1472-6882-13-218

[2] Examine.Com. Berberine benefits, dosage, and side effects. – https://examine.com/supplements/berberine/

[3] ScienceDirect Topics. Berberine—An overview.– https://www.sciencedirect.com/topics/pharmacology-toxicology-and-pharmaceutical-science/berberine

[4] American Chemical Society. Berberine.– https://www.acs.org/molecule-of-the-week/archive/b/berberine.html

[5] Cao, C., & Su, M. Effects of berberine on glucose-lipid metabolism, inflammatory factors and insulin resistance in patients with metabolic syndrome. – https://doi.org/10.3892/etm.2019.7295

[6] Malesu, V. K. Is Berberine Really “Nature’s Ozempic”? – https://www.news-medical.net/health/Is-Berberine-Really-e2809cNaturee28099s-Ozempice2809d-What-Science-Says.aspx

[7] Asbaghi, O., Ghanbari, N., Shekari, M., Reiner, Ž., Amirani, E., Hallajzadeh, J., Mirsafaei, L., & Asemi, Z. The effect of berberine supplementation on obesity parameters, inflammation and liver function enzymes: A systematic review and meta-analysis of randomized controlled trials. – https://doi.org/10.1016/j.clnesp.2020.04.010

[8] Amini, M. R., Sheikhhossein, F., Naghshi, S., Djafari, F., Askari, M., Shahinfar, H., Safabakhsh, M., Jafari, A., & Shab-Bidar, S. Effects of berberine and barberry on anthropometric measures: A systematic review and meta-analysis of randomized controlled trials. – https://doi.org/10.1016/j.ctim.2020.102337

[9] Yin, J., Xing, H., & Ye, J. Efficacy of berberine in patients with type 2 diabetes mellitus. – https://doi.org/10.1016/j.metabol.2008.01.013

[10] Nazari, A., Ghotbabadi, Z. R., Kazemi, K. S., Metghalchi, Y., Tavakoli, R., Rahimabadi, R. Z., & Ghaheri, M. The Effect of Berberine Supplementation on Glycemic Control and Inflammatory Biomarkers in Metabolic Disorders: An Umbrella Meta-analysis of Randomized Controlled Trials. – https://doi.org/10.1016/j.clinthera.2023.10.019

[11] Utami, A. R., Maksum, I. P., & Deawati, Y. Berberine and Its Study as an Antidiabetic Compound. – https://doi.org/10.3390/biology12070973

[12] Dong, H., Zhao, Y., Zhao, L., & Lu, F. The effects of berberine on blood lipids: A systemic review and meta-analysis of randomized controlled trials. – https://doi.org/10.1055/s-0032-1328321

[13] Zhang Y. Berberine lowers blood glucose in type 2 diabetes mellitus patients through increasing insulin receptor expression. – https://www.thieme-connect.de/products/ejournals/abstract/10.1055/s-0032-1328321

[14] Beba, M., Djafarian, K., & Shab-Bidar, S. Effect of Berberine on C-reactive protein: A systematic review and meta-analysis of randomized controlled trials. – https://doi.org/10.1016/j.ctim.2019.08.002

[15] Wang, K., Yin, J., Chen, J., Ma, J., Si, H., & Xia, D. Inhibition of inflammation by berberine: Molecular mechanism and network pharmacology analysis. – https://doi.org/10.1016/j.phymed.2023.155258

[16] Jael Teresa de Jesús, Q. V., Gálvez-Ruíz, J.-C., Márquez Ibarra, A. A., & Leyva-Peralta, M.-A. Perspectives on Berberine and the Regulation of Gut Microbiota: As an Anti-Inflammatory Agent. – https://doi.org/10.3390/ph18020193

[17] Ilyas, Z., Perna, S., Al-thawadi, S., Alalwan, T. A., Riva, A., Petrangolini, G., Gasparri, C., Infantino, V., Peroni, G., & Rondanelli, M. The effect of Berberine on weight loss in order to prevent obesity: A systematic review.– https://doi.org/10.1016/j.biopha.2020.110137

[18] Li, Y., Ma, H., Zhang, Y., Kuang, H., Ng, E. H. Y., Hou, L., & Wu, X. Effect of berberine on insulin resistance in women with polycystic ovary syndrome: Study protocol for a randomized multicenter controlled trial. – https://doi.org/10.1186/1745-6215-14-226

[19] Jurgiel, J., Graniak, A., Opyd, P., Zawodny, T., & Lis, M. The role of berberine in polycystic ovary syndrome. – https://doi.org/10.5603/gpl.95138

[20] Suadoni, M. T., & Atherton, I. Berberine for the treatment of hypertension: A systematic review. – https://doi.org/10.1016/j.ctcp.2020.101287

[21] Ai, X., Yu, P., Peng, L., Luo, L., Liu, J., Li, S., Lai, X., Luan, F., & Meng, X. Berberine: A Review of its Pharmacokinetics Properties and Therapeutic Potentials in Diverse Vascular Diseases.– https://doi.org/10.3389/fphar.2021.762654

[22] Kruczkowska, A., Pakuła, M., Urbański, W., Dolata, N., Cebula, A., Bulzacki, E., Stosiek, A., Balcer, B., Kanturski, A., & Liszka, P. Phytotherapy for Acne Vulgaris—A Review. – https://doi.org/10.12775/JEHS.2025.80.57832

[23] Ye, Y., Liu, X., Wu, N., Han, Y., Wang, J., Yu, Y., & Chen, Q. Efficacy and Safety of Berberine Alone for Several Metabolic Disorders: A Systematic Review and Meta-Analysis of Randomized Clinical Trials.– https://doi.org/10.3389/fphar.2021.653887