NALTREXONE vs RELISTOR

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 21, 2026·How we rate

Possible drug interaction. NALTREXONE and RELISTOR 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	RELISTOR
Rating	56/100	New
Pharmacy pays	~$36.35 /30	—
Type	RX	RX
Active ingredient	NALTREXONE	METHYLNALTREXONE BROMIDE
Manufacturer	Teva	Salix
Dosage forms	Kit	Injectable, Tablet
Drug class	Opioid Antagonist	Opioid Antagonist
Boxed warning	None	None
Treats	Alcoholism, Opioid-Related Disorders, Drug Overdose	Constipation

naltrexone relistor

Rating

56/100

New

Pharmacy pays

~$36.35 /30

—

Type

Active ingredient

NALTREXONE

METHYLNALTREXONE BROMIDE

Manufacturer

Teva

Salix

Dosage forms

Kit

Injectable, Tablet

Drug class

Opioid Antagonist

Boxed warning

None

Treats

Alcoholism, Opioid-Related Disorders, Drug Overdose

Constipation

Frequently asked questions

What is the difference between Naltrexone and Relistor?

Naltrexone contains Naltrexone, while Relistor contains Methylnaltrexone Bromide — 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.