ATHROMBIN vs MYSOLINE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated October 5, 2026·How we rate

Possible drug interaction. ATHROMBIN 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	ATHROMBIN	MYSOLINE
Rating	New	74/100
Pharmacy pays	~$2.57 /30	~$2.89 /30
Type	RX	RX
Active ingredient	WARFARIN POTASSIUM AND WARFARIN SODIUM	PRIMIDONE
Manufacturer	Pharm Res Assoc	Valeant Pharm Intl
Dosage forms	Tablet	Tablet
Drug class	—	Anti-Epileptic Agent
Boxed warning	None	None
Half-life	about 40 hours (the label's effective half-life; range 20 to 60 hours)	—
Treats	—	Partial Epilepsies, Tonic-Clonic Epilepsy, Tremor

athrombin mysoline

Rating

New

74/100

Pharmacy pays

~$2.57 /30

~$2.89 /30

Type

Active ingredient

WARFARIN POTASSIUM AND WARFARIN SODIUM

PRIMIDONE

Manufacturer

Pharm Res Assoc

Valeant Pharm Intl

Dosage forms

Tablet

Drug class

—

Anti-Epileptic Agent

Boxed warning

None

Half-life

about 40 hours (the label's effective half-life; range 20 to 60 hours)

—

Treats

—

Partial Epilepsies, Tonic-Clonic Epilepsy, Tremor

Frequently asked questions

Which is cheaper, Athrombin or Mysoline?

Athrombin costs pharmacies less to acquire — about $2.57 vs $2.89 for a 30-count supply, per the CMS NADAC survey. That gap is in the pharmacy's cost of goods, not necessarily in what you pay: your price is set afterwards by your insurer and the pharmacy.

What is the difference between Athrombin and Mysoline?

Athrombin contains Warfarin Potassium and Warfarin Sodium, 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.