Brewer's Yeast - Desenex (Undecylenic Acid) Interaction
Herbal: Brewer's Yeast
Also Known As: Baker's Yeast, Dried Yeast Fermentate, Faex, Levure, Levure de Boulangerie, Levure Fermentée, Medicinal Yeast, Nutritional Yeast, S. cerevisiae, Saccharomyces cerevisiae
Drug: Undecylenic Acid
Brand names:
Desenex
Medical Content Editor Dr. Brian Staiger, PharmD
Last updated
May 04, 2025
Interaction Details
Undecylenic Acid is classified as belonging to the following category: Antifungals
Theoretically, taking antifungals with some brewer's yeast products might decrease the effectiveness of brewer's yeast.
Some brewer's yeast products contain live yeast. Therefore, simultaneously taking antifungals might kill a significant number of the organisms.
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
- Lewis SJ, Freedman AR. Review article: the use of biotherapeutic agents in the prevention and treatment of gastrointestinal disease. Aliment Pharmacol Ther 1998;12:807-22.
Brewer's Yeast Overview
Brewer's yeast, also known as Saccharomyces cerevisiae, is a type of fungus that is used in the brewing of beer and other fermented alcoholic beverages. It is also used to make bread and other fermented foods. Brewer's yeast is known for its ability to ferment sugars, producing alcohol and carbon dioxide. It is a type of unicellular organism and is closely related to the yeast used in baking, but is a different strain. Brewer's yeast is rich in vitamins and minerals, particularly B vitamins, and is sometimes used as a dietary supplement due to its high nutrient content.
Undecylenic Acid Overview
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Topical miconazole is used to treat tinea corporis(ringworm; fungal skin infection that causes a red scaly rash on different parts of the body), tinea cruris (jock itch; fungal infection of the skin in the groin or buttocks), and tinea pedis (athlete's foot; fungal infection of the skin on the feet and between the toes). Miconazole is in a class of antifungal medications called imidazoles. It works by stopping the growth of fungi that cause infection.
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Not all products should be used to treat all of these conditions. Please read the label for each product to select the one to treat your condition.
Brewer's Yeast - More Interactions
Brewer's Yeast interacts with 133 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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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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