Diindolylmethane - Lynparza (Olaparib) Interaction
Herbal: Diindolylmethane
Also Known As: DIM
Drug: Olaparib
Brand names:
Lynparza
Medical Content Editor Dr. Brian Staiger, PharmD
Last updated
May 25, 2025
Interaction Details
There were no interactions found between Olaparib 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
Diindolylmethane (DIM) is a compound found in cruciferous vegetables such as broccoli, cabbage, and kale. It is formed during the digestion of indole-3-carbinol, another compound found in these vegetables. DIM has been studied for its potential health benefits, including improved hormone balance and reduced risk of certain cancers. DIM (Diindolylmethane) supplements are often marketed as a natural way to support hormone balance, specifically estrogen imbalances, and as a 'detoxifying agent'. Supplements with DIM are often paired with Bioperine to improve absorption.
Olaparib Overview
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Olaparib is used alone or in combination with bevacizumab (Avastin) to help maintain the response of certain types of ovarian (female reproductive organs where eggs are formed), fallopian tube (tube that transports eggs released by the ovaries to the uterus), and peritoneal (layer of tissue that lines the abdomen) cancer in people who have completely responded or partially responded to their first or later chemotherapy treatments. Olaparib is also used to treat certain types of breast cancer that has spread to other parts of the body and has not improved or has worsened after treatment with other therapies. It is also used to treat certain types of early breast cancer in people who have already been treated with other chemotherapy treatments. Olaparib is also used to treat a certain type of prostate cancer that has spread to other parts of the body, no longer responds to medical or surgical treatments to lower testosterone levels, and has progressed after treatment with enzalutamide (Xtandi) or abiraterone (Yonsa, Zytiga). Olaparib is also used to treat ovarian cancer that has not improved or has worsened after treatment with at least three other therapies. Olaparib is also used to help maintain the response of a certain type of pancreatic cancer that has not spread or progressed after the first chemotherapy treatment. Olaparib is a polyadenosine 5'-diphosphoribose polymerase (PARP) enzyme inhibitor. It works by killing cancer cells.
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. |
Return to the main supplement interaction checker page
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.
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Dr. Brian Staiger, PharmD
In addition to being a clinical pharmacist specializing in pharmacotherapy, Dr. Brian Staiger is a registered herbalist through the American Herbalist Guild. He has combined his passion for pharmacy practice with the study of medical ethnobotany to improve patient care. Feel free to reach out about any of your herbal or medication questions!
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