GOCOVRI vs OSMOLEX ER

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated June 7, 2026·How we rate

Attribute	GOCOVRI	OSMOLEX ER
Rating	New	New
Pharmacy pays	~$4.67 /30	~$4.67 /30
Type	RX	RX
Active ingredient	AMANTADINE HYDROCHLORIDE	AMANTADINE HYDROCHLORIDE
Manufacturer	Supernus Pharms	Supernus Pharms
Dosage forms	Capsule, Oral pellets	Tablet, extended release
Drug class	Influenza A M2 Protein Inhibitor	Influenza A M2 Protein Inhibitor
Boxed warning	None	None
Half-life	about 17 hours (range roughly 10 to 25 hours); across studies it has averaged about 16 hours (range 9 to 31 hours) in healthy adults	about 17 hours (range roughly 10 to 25 hours); across studies it has averaged about 16 hours (range 9 to 31 hours) in healthy adults
Treats	Drug-Induced Dyskinesia, Dystonia, Human Influenza	Drug-Induced Dyskinesia, Dystonia, Human Influenza

gocovri osmolex er

Rating

New

Pharmacy pays

~$4.67 /30

Type

Active ingredient

AMANTADINE HYDROCHLORIDE

Manufacturer

Supernus Pharms

Dosage forms

Capsule, Oral pellets

Tablet, extended release

Drug class

Influenza A M2 Protein Inhibitor

Boxed warning

None

Half-life

about 17 hours (range roughly 10 to 25 hours); across studies it has averaged about 16 hours (range 9 to 31 hours) in healthy adults

Treats

Drug-Induced Dyskinesia, Dystonia, Human Influenza

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Frequently asked questions

Which is cheaper, Gocovri or Osmolex ER?

Pharmacies pay about the same to acquire either one — roughly $4.67 for a 30-count supply, per the CMS NADAC survey. That is not what you will be charged: your price is set by your insurer and the pharmacy, not by what the drug cost them.

What is the difference between Gocovri and Osmolex ER?

Both Gocovri and Osmolex ER share the active ingredient Amantadine Hydrochloride.

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.