Avastin and Intestinal fistula - a phase IV clinical study of FDA data

Summary:

Intestinal fistula is reported as a side effect among people who take Avastin (bevacizumab), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Fluorouracil, and have Colon cancer.

The phase IV clinical study analyzes which people have Intestinal fistula when taking Avastin. It is created by eHealthMe based on reports of 75,729 people who have side effects when taking Avastin from the FDA, and is updated regularly.

What is Avastin?

Avastin has active ingredients of bevacizumab. It is often used in high blood cholesterol. eHealthMe is studying from 76,365 Avastin users. Check the latest studies of Avastin.

What is Intestinal fistula?

Intestinal fistula is found to be associated with 166 drugs and 266 conditions by eHealthMe. Check the latest studies of Intestinal fistula.

On Jul, 12, 2026

75,729 people reported to have side effects when taking Avastin.
Among them, 34 people (0.04%) have Intestinal fistula.

Among these 34 people:

How long have people been on Avastin when they have Intestinal fistula? *

What is the gender of people who have Intestinal fistula when taking Avastin? *

female: 55.88 %
male: 44.12 %

What is the age of people who have Intestinal fistula when taking Avastin? *

What are other drugs people take besides Avastin? *

What are other side effects people have besides Intestinal fistula? *

Gastrointestinal Perforation (hole in the digestive tract): 7 people, 20.59%
Abdominal Pain: 5 people, 14.71%
Intestinal Obstruction: 4 people, 11.76%
Peritonitis (inflammation of the peritoneum, the thin tissue that lines the inner wall of the abdomen and covers most of the abdominal organs): 4 people, 11.76%
Fever: 4 people, 11.76%
Abdominal Abscess (collection of pus in abdomen): 4 people, 11.76%
Appendicitis (inflammation of the appendix): 3 people, 8.82%
Cellulitis (infection under the skin): 3 people, 8.82%
Gastrointestinal Disorder (functional problems of gastrointestinal tract): 3 people, 8.82%
Impaired Healing: 3 people, 8.82%

What are the existing conditions these people have? *

Rectal Cancer (cancer of rectum): 6 people, 17.65%
Colon Cancer: 6 people, 17.65%
Renal Cell Carcinoma (a kidney cancer): 3 people, 8.82%
Diabetes: 3 people, 8.82%
Ovarian Cancer (cancer of ovary): 3 people, 8.82%
Indigestion: 3 people, 8.82%
Hypothyroidism (abnormally low activity of the thyroid gland, resulting in retardation of growth and mental development): 3 people, 8.82%
Rectal Cancer Metastatic (cancer of rectum spreads to other): 3 people, 8.82%
Depression: 3 people, 8.82%
Dizziness: 3 people, 8.82%

* Approximation only. Some reports may have incomplete information.

Do you take Avastin and have Intestinal fistula?

- Check whether Intestinal fistula is associated with a drug or a condition
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously

Related studies:

Effectiveness of, long term effects of, and alternative drugs to Avastin:

Avastin (76,365 reports)

Browse all side effects of Avastin:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Browse all the drugs that are associated with Intestinal fistula:

Intestinal fistula (166 drugs)

Browse all the conditions that are associated with Intestinal fistula:

Intestinal fistula (266 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on bevacizumab (the active ingredients of Avastin) and Avastin (the brand name). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered. Dosage of drugs is not considered in the study.

How to use the study?

DO NOT STOP MEDICATIONS without first consulting your doctor. If there are any serious or long term adverse effects discovered in the study, discuss the study with your doctor to ensure that proper medication management will be in place if applicable.

Who is eHealthMe?

With medical big data and proven AI/ML algorithms, eHealthMe provides a platform for everyone to run phase IV clinical trials. We study millions of patients and 5,000 more each day. Results of our real-world drug study have been referenced on 800+ peer-reviewed medical publications, including The Lancet, Mayo Clinic Proceedings, and Nature. Our analysis results are available to researchers, health care professionals, patients (testimonials), and software developers (open API).

WARNING, DISCLAIMER, USE FOR PUBLICATION

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on eHealthMe.com is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only. Our phase IV clinical studies alone cannot establish cause-effect relationship. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.