PROTOPAM CHLORIDE vs VIVITROL

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 11, 2026·How we rate

Possible drug interaction. PROTOPAM CHLORIDE and VIVITROL 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	PROTOPAM CHLORIDE	VIVITROL
Rating	New	70/100
Pharmacy pays	—	~$36.35 /30
Type	RX	RX
Active ingredient	PRALIDOXIME CHLORIDE	NALTREXONE
Manufacturer	Wyeth Ayerst	Alkermes Inc
Dosage forms	Injectable	Kit
Drug class	—	Opioid Antagonist
Boxed warning	None	None
Treats	Poisoning, Drug Overdose, Drug-Related Side Effects and Adverse Reactions	Alcoholism, Opioid-Related Disorders, Drug Overdose

protopam chloride vivitrol

Rating

New

70/100

Pharmacy pays

—

~$36.35 /30

Type

Active ingredient

PRALIDOXIME CHLORIDE

NALTREXONE

Manufacturer

Wyeth Ayerst

Alkermes Inc

Dosage forms

Injectable

Kit

Drug class

—

Opioid Antagonist

Boxed warning

None

Treats

Poisoning, Drug Overdose, Drug-Related Side Effects and Adverse Reactions

Alcoholism, Opioid-Related Disorders, Drug Overdose

Frequently asked questions

What is the difference between Protopam Chloride and Vivitrol?

Protopam Chloride contains Pralidoxime Chloride, while Vivitrol contains Naltrexone — 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.