Naloxone HCL Nasal Spray 4mg
Generic For: Narcan
Naloxone HCL nasal spray 4mg (Narcan) is an opioid antagonist used for the emergency treatment of a known or suspected opioid overdose, including respiratory depression caused by opioids. It works by rapidly reversing the effects of opioids such as heroin, fentanyl, and prescription pain medications. After review by a licensed provider, your order ships from a licensed U.S. pharmacy.
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2-day supply · $425.00/mL
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Buy Naloxone HCL Nasal Spray 4mg (Narcan) Online
An opioid antagonist nasal spray for emergency treatment of opioid overdose and opioid-induced respiratory depression
Naloxone HCL Nasal Spray 4mg Quick Facts
| Drug class | Opioid antagonist |
|---|---|
| Treats | Opioid overdose, opioid-induced respiratory depression |
| Form | Spray |
| Typical dosing | Use as directed on instruction sheet. |
| Prescription required | Yes — prescription only |
What Is Naloxone HCL Nasal Spray 4mg?
Naloxone HCL nasal spray (brand name Narcan) is an opioid antagonist that rapidly reverses the effects of opioids in an emergency. It is used when someone shows signs of a known or suspected opioid overdose, such as slowed or stopped breathing, extreme drowsiness, or unresponsiveness. The spray is given into the nostril and requires no assembly or medical training to administer. Naloxone is not a substitute for emergency medical care — always call 911 after giving a dose.
What Does Naloxone HCL Nasal Spray 4mg Treat?
Emergency treatment of known or suspected opioid overdose
Opioid-induced respiratory depression
Overdose involving heroin or fentanyl
Overdose from prescription opioid pain medications
Central nervous system depression from opioids
Naloxone HCL Nasal Spray 4mg Dosage
Spray contents of 1 device (4 mg) into one nostril at first sign of suspected opioid overdose.
May repeat every 2–3 minutes with a new device, alternating nostrils, until emergency help arrives.
Call 911 immediately after administering the first dose.
Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.
Naloxone HCL Nasal Spray 4mg Side Effects
Common side effects
- Increased blood pressure
- Body aches
- Nausea or vomiting
- Sweating
- Headache
- Nasal dryness or congestion
- Restlessness or irritability
- Rapid heart rate
Serious side effects
Stop taking this medication and seek medical attention right away if you experience:
- Severe opioid withdrawal symptoms (agitation, vomiting, diarrhea)
- Seizures
- Abnormal heart rhythms
- Severe allergic reaction (rash, swelling, difficulty breathing)
- Return of respiratory depression after naloxone wears off
Warnings & Interactions
Not a substitute for emergency medical care — call 911 after use
Opioid effects may return; repeat doses may be needed until help arrives
Can cause sudden, severe opioid withdrawal in opioid-dependent individuals
Withdrawal in opioid-dependent newborns may be life-threatening; monitor closely
Contraindicated in patients with known hypersensitivity to naloxone
Monitor the person continuously until emergency responders arrive
Tell your prescriber about all medications, supplements, and health conditions before starting naloxone hcl nasal spray 4mg.
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