(ethosuximide)
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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.
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Submit a medical question for a Pfizer medicine or a vaccine.
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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.