The following serious adverse reactions are described elsewhere in the labeling:
Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.
The following adverse reactions have been identified during post-approval use of Vitamin K1 Injection. Because these reactions were 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.
Cardiac Disorders: Tachycardia, hypotension.
General Disorders and Administration Site Conditions: Generalized flushing; pain, swelling, and tenderness at injection site.
Hepatobiliary Disorders: Hyperbilirubinemia.
Immune System Disorders: Fatal hypersensitivity reactions, anaphylactic reactions.
Neurologic: Dysgeusia, dizziness.
Pulmonary: Dyspnea.
Skin and Subcutaneous Tissue Disorders: Erythema, pruritic plaques, scleroderma-like lesions, erythema perstans.
Vascular: Cyanosis.
{{section_name_patient}}
{{section_body_html_patient}}
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.