FLUMAZENIL vs OPVEE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 18, 2026·How we rate

Possible drug interaction. FLUMAZENIL and OPVEE 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	FLUMAZENIL	OPVEE
Rating	72/100	New
Pharmacy pays	$1.07 /mL	—
Type	RX	RX
Active ingredient	FLUMAZENIL	NALMEFENE HYDROCHLORIDE
Manufacturer	Hikma	Indivior
Dosage forms	Injectable	Spray/Inhaler
Drug class	Benzodiazepine Antagonist	Opioid Antagonist
Boxed warning	None	None
Treats	Drug Overdose, Drug-Related Side Effects and Adverse Reactions	Opioid-Related Disorders, Respiration Disorders, Drug Overdose

flumazenil opvee

Rating

72/100

New

Pharmacy pays

$1.07 /mL

—

Type

Active ingredient

FLUMAZENIL

NALMEFENE HYDROCHLORIDE

Manufacturer

Hikma

Indivior

Dosage forms

Injectable

Spray/Inhaler

Drug class

Benzodiazepine Antagonist

Opioid Antagonist

Boxed warning

None

Treats

Drug Overdose, Drug-Related Side Effects and Adverse Reactions

Opioid-Related Disorders, Respiration Disorders, Drug Overdose

Frequently asked questions

What is the difference between Flumazenil and Opvee?

Flumazenil contains Flumazenil, while Opvee contains Nalmefene 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.