(conjugated estrogens)

Medication Guide

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Prescribing Information

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Health Professional Information

Who should not use Premarin Intravenous?

Who should not use Premarin Intravenous?

Premarin Intravenous should not be used if you:

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Have unusual vaginal bleeding that has not been evaluated by your healthcare provider
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Currently have or have had certain cancers
Estrogens may increase the chance of getting certain types of cancers, including cancer of the breast or uterus. If you have or have had cancer, talk with your healthcare provider about whether you should use Premarin Intravenous.
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Had a stroke or heart attack
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Currently have or have had blood clots
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Currently have or have had liver problems
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Have been diagnosed with a bleeding disorder
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Are allergic to Premarin Intravenous or any of its ingredients
See the list of ingredients in Premarin Intravenous at the end of this leaflet.
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Think you may be pregnant

Tell your healthcare provider:

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If you are breast feeding
 
The hormones in Premarin Intravenous can pass into your breast milk.
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About all of your medical problems
 
Your healthcare provider may need to check you more carefully if you have certain conditions, such as asthma (wheezing), epilepsy (seizures), diabetes, migraine, endometriosis, lupus, problems with your heart, liver, thyroid, kidneys, or have high calcium levels in your blood.
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About all the medicines you take
 
This includes prescription and nonprescription medicines, vitamins, and herbal supplements. Some medicines may affect how Premarin Intravenous works.

Additional Resources

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Submit a medical question for a Pfizer medicine or a vaccine. 

The submission will be reviewed during our standard business hours.

To report an adverse event related to a Pfizer product and you are not part of a clinical trial* for this medication, click the link below to submit your information: 
Pfizer Safety Reporting Site

*If you are involved in a clinical trial for either product, adverse events should be reported to your coordinating study site.

If you cannot use the above website to report an adverse event related to a Pfizer medication, please call (800) 438-1985.

You may also contact the U.S. Food and Drug Administration (FDA) directly to report adverse events or product quality concerns either online at www.fda.gov/medwatch or by calling (800) 332-1088.