Flaxseed - Conjugated Estrogens, Meprobamate Interaction
Herbal: Flaxseed
Also Known As: Linum usitatissimum, Alasi, Aliviraaii, Brown Flaxseed, Brown-Seeded Flax, Common Flax, Echter Lein, Flachs, Flachssamen, Flax, Flax Hull, Flax Lignans, Flax Meal, Flax Seed, Gemeiner Flachs, Golden Flax, Graine de Lin, Kattan, Keten, Leinsamen, Lignanes de Lin, Lignans, Lin
Drug: Conjugated Estrogens, Meprobamate
Brand names:
PMB 200, PMB 400
Medical Content Editor Dr. Brian Staiger, PharmD
Last updated
May 25, 2025
Interaction Details
Conjugated Estrogens, Meprobamate is classified as belonging to the following category: Estrogens
Theoretically, taking flaxseed might decrease the effects of estrogens.
Flaxseed contains lignans with mild estrogenic and possible antiestrogenic effects. The lignans seem to compete with circulating endogenous estrogen and might reduce estrogen binding to estrogen receptors, resulting in an anti-estrogen effect. It is unclear if this effect transfers to exogenously administered estrogens.
Interaction Rating
Likelihood of Occurrence
PossibleInteraction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
References
- Mousavi Y, Adlercreutz H. Enterolactone and estradiol inhibit each other's proliferative effect on MCF-7 breast cancer cells in culture. J Steroid Biochem Mol Biol 1992;41:615-9..
- Rose DP. Dietary fiber and breast cancer. Nutr Cancer 1990;13:1-8..
Flaxseed Overview
Flaxseed, also known as linseed, is a type of seed that is rich in nutrients and other compounds. It is a good source of fiber, protein, and omega-3 fatty acids, as well as a variety of vitamins and minerals. Flaxseed is often ground and used as a supplement in the form of flaxseed meal or oil.
Flaxseed has a number of potential health benefits. It is high in fiber, which can help improve digestion and lower cholesterol levels. The omega-3 fatty acids found in flaxseed are believed to have anti-inflammatory properties and may help reduce the risk of heart disease and stroke. Flaxseed is also a rich source of lignans, plant compounds that have been shown to have estrogen-like effects.
Both flaxseed and flaxseed oil are popular dietary supplements and share many of the same purported health benefits. However, one of the main differences between the two is the amount of fiber they contain. Flaxseed is a good source of both soluble and insoluble fiber, while flaxseed oil does not contain any fiber. This means that flaxseed can help improve digestion and lower cholesterol levels, while flaxseed oil does not have these effects.
Flaxseed - More Interactions
Flaxseed interacts with 589 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.
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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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