How can berberine help you? What the research says

Author

Olivia Pearman is an experienced researcher who is passionate about access to scientific information. She has over a decade of research experience with a PhD from the University of Colorado at Boulder, a Master’s from the Yale School of the Environment, and a Bachelor of Science from Clemson University. Throughout her career, she has honed her skills in translating research for all audiences and is thrilled to work with CancerChoices to help make scientific knowledge available for everybody.

Olivia Pearman, PhD Research Associate

Clinical reviewer

Laura Pole, MSN, RN, OCNS

Senior Clinical Consultant
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Laura Pole is senior clinical consultant for CancerChoices. Laura is an oncology clinical nurse specialist who has been providing integrative oncology clinical care, navigation, consultation, and education services for over 40 years. She is the co-creator and co-coordinator of the Integrative Oncology Navigation Training at Smith Center for Healing and the Arts in Washington, DC. Laura also manages the “Media Watch Cancer News That You Can Use” listserv for Smith Center/Commonweal. In her role as a palliative care educator and consultant, Laura has served as statewide Respecting Choices Faculty for the Virginia POST (Physician Orders for Scope of Treatment) Collaborative as well as provided statewide professional education on palliative and end-of-life care for the Virginia Association for Hospices and Palliative Care.

For CancerChoices, Laura curates content and research, networks with clinical and organizational partners, brings awareness and education of integrative oncology at professional and patient conferences and programs, and translates research into information relevant to the patient experience as well as clinical practice.

Laura sees her work with CancerChoices as a perfect alignment of all her passions, knowledge and skills in integrative oncology care. She is honored to serve you.

Laura Pole, MSN, RN, OCNS Senior Clinical Consultant

Last update: July 1, 2026

We summarize the clinical evidence for each medical benefit here. We begin with our assessment of the strength of evidence within each category, followed by a brief summary of individual studies or reviews of several studies. In assessing the strength of evidence, we consider the study design, number of participants, and the size of the treatment effect (how much outcomes changed with treatment).

To see more details, click the plus sign to the right of any section.

Improving treatment outcomes

Is berberine linked to improved survival? Is it linked to less cancer growth or metastasis? Does it enhance the anticancer action of other treatments or therapies?

The only published evidence we have found regarding berberine’s use in improving treatment outcomes is preclinical—involving cells, tissues, or lab animals. Preclinical evidence is a first step toward finding whether a therapy has anticancer activity. Without any evidence of effects in living humans, we do not recommend concluding that berberine might have anticancer effects for you. The preclinical evidence is promising, but we consider it still only a weak indication of possible effects in people with cancer. Preclinical evidence is a bit like taking a poll several months before an election. Most of us would not be comfortable saying that the election results will be identical to the poll, and sometimes the election results are not at all what the poll predicted. 

Preclinical evidence for improving treatment outcomes

All the evidence of berberine’s effects on treatment outcomes so far is preclinical. The strongest evidence to date shows improved survival in animals treated with berberine, which has been reported only in lung cancer and multiple myeloma.   

Cancer as a whole
Bladder cancer
Brain and nervous system cancers
Breast cancer
Colorectal cancer
Gastrointestinal cancer
Gynecological cancer
Head, neck, and oral cancer
Leukemia
Lung cancer
Lymphoma
Melanoma
Mesothelioma
Multiple myeloma
Ovarian cancer
Pancreatic cancer
Prostate cancer
Sarcoma

Optimizing your body terrain

Does berberine promote an environment within your body that is less supportive of cancer development, growth, or spread? We present the evidence.

See Optimizing Your Body Terrain ›

Find medical professionals who specialize in managing body terrain factors: Finding Integrative Oncologists and Other Practitioners ›

Body weight

Good evidencesignificant effects in one large or several mid-sized and well-designed clinical studies (randomized controlled trials (RCTs) with an appropriate placebo or other strong comparison control or observational studies that control for confounds) (this is the CancerChoices definition; other researchers and studies may define this differently) of lower measures of body weight among people treated with berberine (not specific to cancer)

High blood sugar and insulin resistance

Good evidence of lower markers of blood sugar among people with type 2 diabetes treated with berberine, comparable to oral diabetes medicine

Good evidence of lower markers of blood sugar and insulin resistance among people with metabolic disorders besides type 2 diabetes treated with berberine

Hormone imbalance

Changes in hormone levels seen in the studies here may not be beneficial in every situation. Your oncology team needs to determine whether any changes would be favorable for your condition.

Preliminary evidencesignificant effects in small or poorly designed clinical studies OR conflicting results in adequate studies but a preponderance of evidence of an effect (this is the CancerChoices definition; other researchers and studies may define this differently) of changes in leptina hormone that helps regulate energy balance by inhibiting hunger levels correlating with weight loss among people with schizophrenia treated with berberine

Modest evidencesignificant effects in at least three small but well-designed randomized controlled trials (RCTs), or one or more well-designed, mid-sized clinical studies of reasonably good quality (RCTs or observational studies), or several small studies aggregated into a meta-analysis (this is the CancerChoices definition; other researchers and studies may define this differently) of better sex hormone balance among people with polycystic ovary syndrome treated with berberine

Weak evidenceone or more case studies, supported by animal evidence OR small treatment effects of limited clinical significance OR studies with no controls OR weak trends of effects (this is the CancerChoices definition; other researchers and studies may define this differently) of higher testosterone among men with hyperlipidemia treated with berberine

Immune function

No evidence of an effectoverall, one or more studies did not demonstrate that a treatment or intervention led to an expected outcome; this does not always mean that there is no effect in clinical practice, but that the studies may have been underpowered (too few participants) or poorly designed. Larger, well-designed studies provide more confidence in making assessments. on white blood cell counts among people with severe COVID-19 treated with berberine

Inflammation

Good evidence of lower markers of inflammation among people with a variety of health conditions other than cancer or after surgery

Your microbiome

Preliminary evidence of better composition of intestinal flora, especially fewer Firmicutes species, among people with metabolic disorders treated with berberine; a higher Firmicutes to Bacteroidetes ratio is associated with dysbiosismicrobial imbalance or maladaptation on or inside the body and obesity

Preliminary evidence of better markers of intestinal flora among people with Parkinson’s disease treated with berberine

Berberine combined with other therapies

Modest evidence of lower glucose levels among people treated with NComb, a mixture of red yeast rice, berberine, policosanol, astaxanthin, coenzyme Q10, and folic acid

Preliminary evidence of lower levels of insulin and insulin resistancea condition in which cells in your muscles, fat, and liver don’t respond well to insulin and can’t efficiently take up glucose from your blood for energy among adults with impaired fasting glucose treated with Lagerstroemia speciosa, Berberis aristata, Curcuma longa, alpha-lipoic acid, chromium picolinate, and folic acid

Preliminary evidence of more weight loss and better glycemic control among people with fatty liver disease and diabetes treated with HTD1801 (berberine ursodeoxycholate)

Preliminary evidence of better body mass index, waist circumference, waist to hip ratio, percent of abdominal fat, fasting blood glucose and insulin, and insulin resistance (HOMA-IR) among overweight or obese people with type 2 diabetes treated with berberine and silymarin

Weak evidence of lower body mass index after 3 months among women with estroprogestin-induced hypercholesterolemia treated with berberine and monacolins

Preliminary evidence of lower measures of blood sugar, insulin, and insulin resistance among people with high cholesterol treated with policosanol, red yeast rice containing monacolin K, berberine, and in one case other nutriceuticals

Preliminary evidence of lower fasting insulin and insulin resistance among overweight people with hyperlipidemia treated with berberine, chlorogenic acid, and tocotrienols

Managing side effects and promoting wellness

Is berberine linked to fewer or less severe side effects or symptoms? Is it linked to less toxicity from cancer treatment? Does it support your quality of life or promote general well-being? We present the evidence.

Breathlessness and other lung symptoms

Weak evidenceone or more case studies, supported by animal evidence OR small treatment effects of limited clinical significance OR studies with no controls OR weak trends of effects (this is the CancerChoices definition; other researchers and studies may define this differently) of lower incidence of radiation-induced lung injury among people with non-small cell lung cancer treated with berberine during radiotherapy

Gastrointestinal symptoms

Weak evidence of lower incidence and severity of radiation-induced acute intestinal symptoms during abdominal or pelvic radiotherapy among people with seminoma, lymphomas, or cervical cancer treated with oral berberine

Reducing cancer risk

Is berberine linked to lower risks of developing cancer or of recurrence? We present the evidence.

Colorectal cancer

Modest evidencesignificant effects in at least three small but well-designed randomized controlled trials (RCTs), or one or more well-designed, mid-sized clinical studies of reasonably good quality (RCTs or observational studies), or several small studies aggregated into a meta-analysis (this is the CancerChoices definition; other researchers and studies may define this differently) of moderately lower risk of recurrence of colorectal adenoma among people treated with berberine

Berberine combined with other therapies

Berberine with other treatments for H. pylori infections: modest evidence of comparable effects in eradicating Helicobacter pylori infections—a risk factor for stomach cancer—among people treated with berberine as part of a combination therapy compared to bismuth-containing combination therapies

← Back to the full Berberine therapy guide

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