The following adverse reactions have been identified in clinical studies or postmarketing reports. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.
Cardiovascular: | hypotension, circulatory collapse, cardiac depression including bradycardia |
Central Nervous System: | central nervous system depression leading to respiratory paralysis, visual disturbances, flushing, sweating, hypothermia |
| Metabolic: | hypocalcemia with signs of tetany, hypermagnesemia |
Neurologic: | lethargy, sedation, somnolence, myasthenic crisis |
Neuromuscular: | depressed deep tendon reflexes, flaccid paralysis |
Pulmonary: | decreased respiratory rate, pulmonary edema |
The following adverse reactions have been identified in clinical studies or postmarketing reports. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.
Cardiovascular: | hypotension, circulatory collapse, cardiac depression including bradycardia |
Central Nervous System: | central nervous system depression leading to respiratory paralysis, visual disturbances, flushing, sweating, hypothermia |
| Metabolic: | hypocalcemia with signs of tetany, hypermagnesemia |
Neurologic: | lethargy, sedation, somnolence, myasthenic crisis |
Neuromuscular: | depressed deep tendon reflexes, flaccid paralysis |
Pulmonary: | decreased respiratory rate, pulmonary edema |
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Pfizer Safety
To report an adverse event related to the Pfizer-BioNTech COVID-19 Vaccine, and you are not part of a clinical trial* for this product, click the link below to submit your information:
Pfizer Safety Reporting Site*If you are involved in a clinical trial for this product, adverse events should be reported to your coordinating study site.
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FDA Medwatch
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 call (800) 822-7967.