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Evzio Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
Evzio (naloxone hydrochloride injection) is an opioid antagonist used for the emergency treatment of known or suspected opioid overdose, as manifested by respiratory and/or central nervous system depression. Common side effects include low or high blood pressure, abnormal heart rhythm, shortness of breath, fluid in the lungs, and cardiac arrest.
Evzio comes in a pre-filled auto-injector. Each Evzio delivers 0.4 mg naloxone hydrochloride injection (0.4 mL). Evzio may interact with other drugs. Tell your doctor all medications and supplements you use. Tell your doctor if you are pregnant or plan to become pregnant before using Evzio. It may cause withdrawal symptoms in a newborn. It is unknown if this drug passes into breast milk. Consult your doctor before breastfeeding. Withdrawal symptoms may occur if you suddenly stop taking this medication.
Our Evzio (naloxone hydrochloride injection) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Evzio FDA Prescribing Information: Side Effects
The following serious adverse reactions are discussed elsewhere in the labeling:
- Duration of effect [see WARNINGS AND PRECAUTIONS]
- Precipitation of Severe Opioid Withdrawal [see WARNINGS AND PRECAUTIONS]
The following adverse reactions have been identified during post-approval use of naloxone hydrochloride in the post-operative setting. 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: Hypotension, hypertension, ventricular tachycardia and fibrillation, dyspnea, pulmonary edema, and cardiac arrest. Death, coma, and encephalopathy have been reported as sequelae of these events. Excessive doses of naloxone hydrochloride in post-operative patients have resulted in significant reversal of analgesia and have caused agitation [see WARNINGS AND PRECAUTIONS].
Abrupt reversal of opioid effects in persons who were physically dependent on opioids has precipitated an acute withdrawal syndrome. Signs and symptoms have included: body aches, fever, sweating, runny nose, sneezing, piloerection, yawning, weakness, shivering or trembling, nervousness, restlessness or irritability, diarrhea, nausea or vomiting, abdominal cramps, increased blood pressure, tachycardia. In the neonate, opioid withdrawal signs and symptoms also included: convulsions, excessive crying, hyperactive reflexes [see WARNINGS AND PRECAUTIONS].
Read the entire FDA prescribing information for Evzio (Naloxone Hydrochloride Auto-injector for Injection) »
Additional Evzio Information
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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