LONSURF vs MYSOLINE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated September 26, 2026·How we rate

Possible drug interaction. LONSURF and MYSOLINE 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	LONSURF	MYSOLINE
Rating	New	74/100
Pharmacy pays	—	~$2.89 /30
Type	RX	RX
Active ingredient	TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE	PRIMIDONE
Manufacturer	Taiho Oncology	Valeant Pharm Intl
Dosage forms	Tablet	Tablet
Drug class	—	Anti-Epileptic Agent
Boxed warning	None	None
Treats	—	Partial Epilepsies, Tonic-Clonic Epilepsy, Tremor

lonsurf mysoline

Rating

New

74/100

Pharmacy pays

—

~$2.89 /30

Type

Active ingredient

TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

PRIMIDONE

Manufacturer

Taiho Oncology

Valeant Pharm Intl

Dosage forms

Tablet

Drug class

—

Anti-Epileptic Agent

Boxed warning

None

Treats

—

Partial Epilepsies, Tonic-Clonic Epilepsy, Tremor

Frequently asked questions

What is the difference between Lonsurf and Mysoline?

Lonsurf contains Tipiracil Hydrochloride and Trifluridine, while Mysoline contains Primidone — 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.