Uva Ursi - Bazedoxifene Acetate, Conjugated Estrogens Interaction
Herbal: Uva Ursi
Also Known As: Arctostaphylos uva-ursi, Arberry, Arbousier, Arbousier Traînant, Bear's Grape, Bearberry, Beargrape, Busserole, Common Bearberry, Faux Buis, Hogberry, Kinnikinnik, Manzanita, Mountain Box, Mountain Cranberry, Petit Buis, Ptarmigan Berry, Raisin de Renard, Raisin d'Ours
Drug: Bazedoxifene Acetate, Conjugated Estrogens
Brand names:
Duavee
Medical Content Editor Dr. Brian Staiger, PharmD
Last updated
May 25, 2025
Interaction Details
Bazedoxifene Acetate, Conjugated Estrogens is classified as belonging to the following category: Cytochrome P450 3A4 (Cyp3A4) Substrates
Theoretically, uva ursi may decrease the metabolism of CYP3A4 substrates.
In vitro, uva ursi appears to inhibit CYP3A4. This effect has not been reported in humans.
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
- Chauhan B, Yu C, Krantis A, et al. In vitro activity of uva-ursi against cytochrome P450 isoenzymes and P-glycoprotein. Can J Physiol Pharmacol. 2007;85(11):1099-107.
Interaction Details
Bazedoxifene Acetate, Conjugated Estrogens is classified as belonging to the following category: P-Glycoprotein Substrates
Theoretically, uva ursi may alter the levels of drugs transported by P-glycoprotein.
In vitro, uva ursi appears to inhibit the multi-drug transporter protein, P-glycoprotein. This effect has not been reported in humans.
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
- Chauhan B, Yu C, Krantis A, et al. In vitro activity of uva-ursi against cytochrome P450 isoenzymes and P-glycoprotein. Can J Physiol Pharmacol. 2007;85(11):1099-107.
Interaction Details
Bazedoxifene Acetate, Conjugated Estrogens is classified as belonging to the following category: Glucuronidated Drugs
Theoretically, uva ursi may increase levels of drugs metabolized by glucuronidation.
In vitro, uva ursi extract appears to strongly inhibit UDP-glucuronosyltransferase (UGT) 1A1 (UGT1A1). However, uva ursi extract does not appear to inhibit UGT1A1 in animal models. This effect has not been reported in humans.
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
- Park JB, Kim D, Min JS, et al. Identification and characterization of in vitro inhibitors against UDP-glucuronosyltransferase 1A1 in uva-ursi extracts and evaluation of in vivo uva-ursi-drug interactions. Food Chem Toxicol. 2018;120:651-661.
Uva Ursi Overview
Uva ursi, also known as bearberry, is a plant species belonging to the Ericacea family, and is native to North America, Europe, and parts of Asia. It is a low-growing shrub with small, white flowers and edible red berries. The leaves of the plant are often used in traditional medicine as they are thought to have various medicinal properties, such as astringent, diuretic, and antimicrobial effects.
Medicinally, Uva ursi is most often used to treat urinary tract infections and other urinary problems, as well as skin conditions such as eczema and dermatitis. It is also sometimes used to promote weight loss and as a natural remedy for kidney stones. In dietary supplements, Uva ursi is often standardized with a specific amount of Arbutin (usually around 20%), a constituent of the plant.
Bazedoxifene Acetate, Conjugated Estrogens Overview
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Estrogen and bazedoxifene tablets are used to treat hot flashes (sudden feelings of warmth, especially in the face, neck, and chest) in women who are experiencing menopause (stage of life when menstrual periods become less frequent and stop and women may experience other symptoms and body changes). Estrogen and bazedoxifene tablets are also used to prevent osteoporosis (condition in which the bones become thin and weak and break easily) in women who have undergone menopause. Estrogen is in a class of medications called hormones and bazedoxifene is in a class of medications called estrogen agonist–antagonists. Estrogen works by replacing estrogen that is normally produced by the body. Bazedoxifene is used to block the action of estrogen on the lining of the uterus, decreasing the risk of overgrowth that may lead to cancer.
Uva Ursi - More Interactions
Uva Ursi interacts with 778 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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