Androstenediol - Premarin (Conjugated Estrogens) Interaction
Herbal: Androstenediol
Drug: Conjugated Estrogens
Brand names:
Premarin, Cenestin, Enjuvia, Premarin Vaginal Cream
Medical Content Editor Dr. Brian Staiger, PharmD
Last updated
May 18, 2025
Interaction Details
Conjugated Estrogens is classified as belonging to the following category: Estrogens
Androstenediol is a precursor to estrogen and can increase levels of estradiol and estrone. There is some concern that taking androstenediol with estrogens might increase estrogenic effects and potential side effects. However, androstenediol is converted to estrogen in low estrogen environments. Patients who are taking supplemental estrogen do not have low estrogen levels. Therefore, androstenediol might not be converted to estrogen in these patients. It is unclear how this might alter the effects and side effects of androstenediol. Until more is known, use with caution or avoid using with estrogen-containing drugs. Some of these drugs include CombiPatch, Estraderm Transdermal, Kestrone, Vivelle Transdermal, and others.
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
- Broeder CE, Quindry J, Brittingham K, et al. The Andro Project: physiological and hormonal influences of androstenedione supplementation in men 35 to 65 years old participating in a high-intensity resistance training program. Arch Intern Med 2000;160:30
- Brown GA, Martini ER, Roberts BS, et al. Acute hormonal response to sublingual androstenediol intake in young men. J Appl Physiol 2002;92:142-6.
Androstenediol Overview
Androstenediol is a naturally occurring steroid hormone in the body that serves as a precursor to testosterone and other androgens. It is classified as a prohormone and a weak anabolic steroid. Androstenediol is sometimes used in dietary supplements for its purported effects on increasing testosterone levels and enhancing athletic performance, although its effectiveness and safety for these purposes are not well-established. In the United States, androstenediol is listed as a Schedule III controlled substance, meaning it has a potential for abuse and dependence. It is also banned by organizations like the National Collegiate Athletic Association (NCAA) and the World Anti-Doping Agency (WADA) for use in sports competitions.
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.
Androstenediol - More Interactions
Androstenediol interacts with 47 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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