NALTREXONE vs REZENOPY

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 22, 2026·How we rate

Possible drug interaction. NALTREXONE and REZENOPY are different prescription medicines. Combining or switching between them can cause interactions — talk to a pharmacist or prescriber before making changes. This page is not medical advice.

Attribute	NALTREXONE	REZENOPY
Rating	56/100	New
Pharmacy pays	~$36.35 /30	$4.41 /mL
Type	RX	RX
Active ingredient	NALTREXONE	NALOXONE HYDROCHLORIDE
Manufacturer	Teva	Scienture
Dosage forms	Kit	Spray/Inhaler
Drug class	Opioid Antagonist	Opioid Antagonist
Boxed warning	None	None
Half-life	—	30 to 81 minutes (mean 64 ± 12 minutes)
Treats	Alcoholism, Opioid-Related Disorders, Drug Overdose	Opioid-Related Disorders, Respiration Disorders, Septic Shock

naltrexone rezenopy

Rating

56/100

New

Pharmacy pays

~$36.35 /30

$4.41 /mL

Type

Active ingredient

NALTREXONE

NALOXONE HYDROCHLORIDE

Manufacturer

Teva

Scienture

Dosage forms

Kit

Spray/Inhaler

Drug class

Opioid Antagonist

Boxed warning

None

Half-life

—

30 to 81 minutes (mean 64 ± 12 minutes)

Treats

Alcoholism, Opioid-Related Disorders, Drug Overdose

Opioid-Related Disorders, Respiration Disorders, Septic Shock

Frequently asked questions

What is the difference between Naltrexone and Rezenopy?

Naltrexone contains Naltrexone, while Rezenopy contains Naloxone Hydrochloride — they have different active ingredients.

Ratings are based on FDA regulatory (recall-safety) data. This comparison is for general reference only — not medical advice. Always consult a licensed professional before choosing or switching a medication.