Diindolylmethane - Entyvio (Vedolizumab) Interaction
Herbal: Diindolylmethane
Also Known As: DIM
Drug: Vedolizumab
Brand names:
Entyvio

Medical Content Editor Dr. Brian Staiger, PharmD
Last updated
May 18, 2025
Interaction Details
There were no interactions found between Vedolizumab and Diindolylmethane. This does not mean the potential for an interaction does not exist, however. There is often a lack of studies and data surrounding traditional medicine, especially concerning drug interactions, so it is important to always consult your provider before making any changes to your medication regimen.
Pharmacist Analysis
DIM does have some theoretical drug interactions to be aware of, but they are generally believed to be only mild to moderate in nature.
Potential drug interactions with DIM include drugs in the following classes:
- Drugs that are metabolized by the liver enzyme CYP1A2: DIM may induce this enzyme, increasing the metabolism of certain drugs.
- Diuretics: DIM may reduce sodium levels, and could have additive effects with diuretics that increase sodium loss.
- Estrogen: DIM may have both estrogenic and anti-estrogen effects.
These are all detailed in individual interaction pages.
There is no known interaction between DIM and the drug in question, however.
Nevertheless, always be sure to tell your doctor about all the medications you are taking, supplements included.
- Dr. Brian Staiger, PharmDDiindolylmethane Overview

Vedolizumab Overview
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Vedolizumab injection is used to relieve the symptoms of certain autoimmune disorders (conditions in which the immune system attacks healthy parts of the body and causes pain, swelling, and damage) of the gastrointestinal tract including:
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Crohn's disease (a condition in which the body attacks the lining of the digestive tract, causing pain, diarrhea, weight loss, and fever) that has not improved when treated with other medications.
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ulcerative colitis (condition that causes swelling and sores in the lining of the large intestine) that has not improved when treated with other medications.
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Vedolizumab injection is in a class of medications called integrin receptor antagonists. It works by blocking the action of certain cells in the body that cause inflammation.
Diindolylmethane - More Interactions
Diindolylmethane interacts with 268 drugs
Interaction Rating Key
These severity listings are for informational use only. Never start, stop or otherwise change your therapy before speaking with your provider.
Major | The combined use of these agents is strongly discouraged as serious side effects or other negative outcomes could occur. |
Moderate | Use cautiously under the care of a healthcare professional or avoid this combination. A significant interaction or negative outcome could occur. |
Minor | Be aware that there is a chance of an interaction. Watch for warning signs of a potential interaction. |
Unknown | No interactions have been reported or no interaction data is currently available. |
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Parts of this content are provided by the Therapeutic Research Center, LLC.
DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
© 2021 Therapeutic Research Center, LLC
Drug descriptions are provided by MedlinePlus.