Rooibos - Xalkori (Crizotinib) Interaction
Herbal: Rooibos
Also Known As: Aspalathus linearis, Green Red Bush, Infusion Rooibos, Kaffree Tea, Red Bush, Red Bush Tea, Rooibos Rouge, Rooibos Tea, Té Rojo, Té Rojo Rooibos, Thé Rooibos, Thé Rouge
Drug: Crizotinib
Brand names:
Xalkori
Medical Content Editor Dr. Brian Staiger, PharmD
Last updated
Jun 22, 2025
Interaction Details
Crizotinib is classified as belonging to the following category: Cytochrome P450 3A4 (Cyp3A4) Substrates
Theoretically, taking rooibos with CYP3A4 substrates may increase the effects of CYP3A4 substrates.
In vitro research shows that the methanol extract of rooibos leaves and stems strongly inhibits CYP3A4 enzyme activity.
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
- Fantoukh OI, Dale OR, Parveen A, et al. Safety Assessment of Phytochemicals Derived from the Globalized South African Rooibos Tea (Aspalathus linearis) through Interaction with CYP, PXR, and P-gp. J Agric Food Chem. 2019;67(17):4967-4975.
Rooibos Overview
Rooibos is a plant that is native to South Africa. The leaves and stems of the rooibos plant are used to make a tea, which has a unique, slightly sweet flavor and is known for its soothing properties. It is caffeine-free and high in antioxidants.
Rooibos tea has been used in traditional medicine for the treatment of age-related cognitive decline, hay fever, anxiety, cardiovascular disease (CVD), diabetes, gastrointestinal disorders, inflammatory conditions and obesity. Research of rooibos extracts indicate it contains over 187 different compounds, some of which may have medicinal effects.
Crizotinib Overview
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Crizotinib is used to treat certain types of non-small cell lung cancer (NSCLC) that has spread to nearby tissues or to other parts of the body. It is also used to treat a certain type of anaplastic large cell lymphoma (ALCL) that has returned or is unresponsive to other treatment(s) in certain adults and children 1 year of age and older. Crizotinib is also used to treat a certain type of inflammatory myofibroblastic tumor (IMT; type of cancer that occurs in mucosal tissues usually in the abdominal area, involving the lungs, bladder, stomach, uterus, liver, or intestines) that cannot be treated with surgery or that has not improved or has come back after previous treatment(s) in adults and children 1 year of age and older. Crizotinib is in a class of medications called kinase inhibitors. It works by blocking the action of a certain naturally occurring substance that may be needed to help cancer cells multiply.
Rooibos - More Interactions
Rooibos interacts with 856 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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