Atractylodes - Premarin (Conjugated Estrogens) Interaction
Herbal: Atractylodes
Also Known As: Atractylodes lancea, AMK, ATR, Atractylenolide, Bai Zhu, Byaki-Jutsu, Cang Zhu, Chang Zhe, Jutsu, Khod Kha Mao, Paekch'ul, So-Jutsu
Drug: Conjugated Estrogens
Brand names:
Premarin, Cenestin, Enjuvia, Premarin Vaginal Cream
Medical Content Editor Dr. Brian Staiger, PharmD
Last updated
May 11, 2025
Interaction Details
Conjugated Estrogens is classified as belonging to the following category: Cytochrome P450 3A4 (Cyp3A4) Substrates
Theoretically, atractylodes might increase the levels of CYP3A4 substrates.
In animals, atractylodes administered at high doses has been shown to inhibit CYP3A1 activity, which is a homolog to the human CYP3A4 enzyme. This effect has not been shown 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
- Muhamad N, Plengsuriyakarn T, Na-Bangchang K. Atractylodes lancea for cholangiocarcinoma: Modulatory effects on CYP1A2 and CYP3A1 and pharmacokinetics in rats and biodistribution in mice. PLoS One 2022;17(11):e0277614.
Atractylodes Overview
Atractylodes is a genus of flowering plants native to eastern Asia, with its roots being used in traditional Chinese medicine (TCM), traditional Japanese medicine (Kampo), and traditional Thai medicine. It is found in formulations like ninjin-yoei-to and shenling baizhu san. Pharmacokinetic studies show that atractylodin, a major bioactive compound, is absorbed rapidly after oral administration, with peak plasma concentrations reached within 0.5-2 hours. The root contains sesquiterpenoids, sterols, and essential oils, with constituents like atractylenolides and atractylon. These compounds contribute to various purported pharmacological effects, including anti-cancer, anti-inflammatory, anti-viral, and gastrointestinal effects, but more research is needed for a better understanding of its overall effectiveness in these areas.
Conjugated Estrogens Overview
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The estradiol cypionate and estradiol valerate forms of estrogen injection are used to treat hot flushes (hot flashes; sudden strong feelings of heat and sweating) and/or vaginal dryness, itching, and burning in women who are experiencing menopause (change of life; the end of monthly menstrual periods). However, women who need a medication only to treat vaginal dryness, itching, or burning should consider a different treatment. These forms of estrogen injection are also sometimes used to treat the symptoms of low estrogen in young women who do not produce enough estrogen naturally. The estradiol valerate form of estrogen injection is also sometimes used to relieve the symptoms of certain types of prostate (a male reproductive organ) cancer. The conjugated estrogens form of estrogen injection is used to treat abnormal vaginal bleeding that a doctor has decided is caused only by a problem with the amounts of certain hormones in the body. Estrogen injection is in a class of medications called hormones. It works by replacing estrogen that is normally produced by the body.
Atractylodes - More Interactions
Atractylodes 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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