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MYSOLINE vs TRILEPTAL

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 23, 2026·How we rate

Possible drug interaction. MYSOLINE and TRILEPTAL 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.

Rating

70/100
70/100

Pharmacy pays

~$2.89 /30
~$5.03 /30

Type

RX
RX

Active ingredient

PRIMIDONE
OXCARBAZEPINE

Dosage forms

Tablet
Suspension, Tablet

Drug class

Anti-Epileptic Agent
Anti-Epileptic Agent

Boxed warning

None
None

Half-life

about 2 hours (immediate-release tablets and oral suspension)

Treats

Partial Epilepsies, Tonic-Clonic Epilepsy, Tremor
Partial Epilepsies

Frequently asked questions

Which is better-rated, Mysoline or Trileptal?

Mysoline and Trileptal are tied at 3.5 out of 5 by our independent rating.

Which is cheaper, Mysoline or Trileptal?

Mysoline costs pharmacies less to acquire — about $2.89 vs $5.03 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 Trileptal?

Mysoline contains Primidone, while Trileptal contains Oxcarbazepine — 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.