MYSOLINE vs ONSURA

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated October 9, 2026·How we rate

Possible drug interaction. MYSOLINE and ONSURA 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	MYSOLINE	ONSURA
Rating	74/100	54/100
Pharmacy pays	~$2.89 /30	—
Type	RX	RX
Active ingredient	PRIMIDONE	ETHINYL ESTRADIOL AND NORELGESTROMIN
Manufacturer	Valeant Pharm Intl	Teva
Dosage forms	Tablet	Film, extended release
Drug class	Anti-Epileptic Agent	—
Boxed warning	None	None
Treats	Partial Epilepsies, Tonic-Clonic Epilepsy, Tremor	—

mysoline onsura

Rating

74/100

54/100

Pharmacy pays

~$2.89 /30

—

Type

Active ingredient

PRIMIDONE

ETHINYL ESTRADIOL AND NORELGESTROMIN

Manufacturer

Valeant Pharm Intl

Teva

Dosage forms

Tablet

Film, extended release

Drug class

Anti-Epileptic Agent

—

Boxed warning

None

Treats

Partial Epilepsies, Tonic-Clonic Epilepsy, Tremor

—

Frequently asked questions

Which is better-rated, Mysoline or Onsura?

By our independent rating, Mysoline scores higher — 3.7 vs 2.7 out of 5 for Onsura. Ratings are based on FDA regulatory (recall-safety) data.

What is the difference between Mysoline and Onsura?

Mysoline contains Primidone, while Onsura contains Ethinyl Estradiol and Norelgestromin — 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.