(dofetilide)

Medication Guide

Download Consumer Medicine Information

Health Professional Information

{{section_name_patient}}

{{section_body_html_patient}}

Prescribing Information

Download Prescribing Information

Health Professional Information

What should I tell my doctor before taking TIKOSYN?

What should I tell my doctor before taking TIKOSYN?

Before taking TIKOSYN, tell your doctor about all of your medical conditions including if you:

•
have heart problems
•
have kidney or liver problems
•
are pregnant or plan to become pregnant. It is not known if TIKOSYN will harm your unborn baby.
•
are breast-feeding or plan to breast-feed. It is not known if TIKOSYN passes into your breast milk. You and your doctor should decide if you will take TIKOSYN or breast-feed. You should not do both.

Especially tell your doctor if you take medicines to treat:

•
heart problems
•
high blood pressure
•
depression or other mental problems
•
asthma
•
allergies, or hay fever
•
skin problems
•
infections

Ask your doctor if you are not sure about the medicines you take. Tell your doctor about all prescription and non-prescription medicines, vitamins, dietary supplements, and any natural or herbal remedies. TIKOSYN and other medicines may affect each other, causing serious side effects. If you take TIKOSYN with certain medicines, you will be more likely to have a different type of abnormal heartbeat. See "Who should not take TIKOSYN?"

Know the medicines you take. Keep a list of your medicines and show it to your doctor and pharmacist when you get a new medicine.

Additional Resources

Chat online with Pfizer Medical Information regarding your inquiry on a Pfizer medicine or vaccine.

Speak with a Pfizer Medical Information Professional regarding your Pfizer medicine or vaccine inquiry.

Available 9AM-5PM ET Monday to Friday; excluding holidays.

 

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.