MYSOLINE vs SUBVENITE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 21, 2026·How we rate

Possible drug interaction. MYSOLINE and SUBVENITE 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	SUBVENITE
Rating	70/100	New
Pharmacy pays	~$2.89 /30	~$4.39 /30
Type	RX	RX
Active ingredient	PRIMIDONE	LAMOTRIGINE
Manufacturer	Valeant Pharm Intl	Owp Pharms
Dosage forms	Tablet	Suspension, Tablet, Kit
Drug class	Anti-Epileptic Agent	Anti-Epileptic Agent
Boxed warning	None	Boxed warning
Half-life	—	about 25 to 33 hours in healthy adults taking no other medications — the label reports a mean elimination half-life of 32.8 hours after a single dose (individual range 14 to 103 hours) and 25.4 hours with repeat dosing (range 11.6 to 61.6 hours), since lamotrigine induces its own metabolism
Treats	Partial Epilepsies, Tonic-Clonic Epilepsy, Tremor	Bipolar Disorder, Partial Epilepsies, Seizures

mysoline subvenite

Rating

70/100

New

Pharmacy pays

~$2.89 /30

~$4.39 /30

Type

Active ingredient

PRIMIDONE

LAMOTRIGINE

Manufacturer

Valeant Pharm Intl

Owp Pharms

Dosage forms

Tablet

Suspension, Tablet, Kit

Drug class

Anti-Epileptic Agent

Boxed warning

None

Boxed warning

Half-life

—

about 25 to 33 hours in healthy adults taking no other medications — the label reports a mean elimination half-life of 32.8 hours after a single dose (individual range 14 to 103 hours) and 25.4 hours with repeat dosing (range 11.6 to 61.6 hours), since lamotrigine induces its own metabolism

Treats

Partial Epilepsies, Tonic-Clonic Epilepsy, Tremor

Bipolar Disorder, Partial Epilepsies, Seizures

Frequently asked questions

Which is cheaper, Mysoline or Subvenite?

Mysoline costs pharmacies less to acquire — about $2.89 vs $4.39 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 Mysoline and Subvenite?

Mysoline contains Primidone, while Subvenite contains Lamotrigine — 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.