Marshmallow - Serax (Oxazepam) Interaction
Herbal: Marshmallow
Also Known As: Althaea officinalis, Altea, Alteia, Althaeae Folium, Althaeae Radi, Althea, Althée, Guimauve, Guimauve Officinale, Gulkhairo, Herba Malvae, Mallards, Malvavisco, Marsh Maillo, Mauve Blanche, Mortification Root, Racine de Guimauve, Sweet Weed, Wymote
Drug: Oxazepam
Brand names:
Serax

Medical Content Editor Dr. Brian Staiger, PharmD
Last updated
May 18, 2025
Interaction Details
Oxazepam is classified as belonging to the following category: Oral Drugs
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Marshmallow contains mucilage which can affect oral drug absorption. To avoid changes in absorption, take marshmallow 30-60 minutes after oral medications.
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
- Monographs on the medicinal uses of plant drugs. Exeter, UK: European Scientific Co-op Phytother, 1997.
- Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
- McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
- Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
Marshmallow Overview

Oxazepam Overview
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Oxazepam is used to relieve anxiety, including anxiety caused by alcohol withdrawal (symptoms that may develop in people who stop drinking alcohol after drinking large amounts for a long time). Oxazepam is in a class of medications called benzodiazepines. It works by slowing activity in the brain to allow for relaxation.
Marshmallow - More Interactions
Marshmallow interacts with 2004 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.
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Drug descriptions are provided by MedlinePlus.