LAMICTAL vs SERAX

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated October 8, 2026·How we rate

Possible drug interaction. LAMICTAL and SERAX 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	LAMICTAL	SERAX
Rating	72/100	New
Pharmacy pays	~$4.43 /30	~$30.95 /30
Type	RX	RX
Active ingredient	LAMOTRIGINE	OXAZEPAM
Manufacturer	Glaxosmithkline	Alpharma US Pharms
Dosage forms	Tablet, Kit	Capsule
Drug class	Anti-Epileptic Agent	—
Boxed warning	Boxed warning	None
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	Bipolar Disorder, Partial Epilepsies, Seizures	Alcohol Withdrawal Delirium, Anxiety Disorders, Partial Epilepsies

lamictal serax

Rating

72/100

New

Pharmacy pays

~$4.43 /30

~$30.95 /30

Type

Active ingredient

LAMOTRIGINE

OXAZEPAM

Manufacturer

Glaxosmithkline

Alpharma US Pharms

Dosage forms

Tablet, Kit

Capsule

Drug class

Anti-Epileptic Agent

—

Boxed warning

None

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

Bipolar Disorder, Partial Epilepsies, Seizures

Alcohol Withdrawal Delirium, Anxiety Disorders, Partial Epilepsies

Frequently asked questions

Which is cheaper, Lamictal or Serax?

Lamictal costs pharmacies less to acquire — about $4.43 vs $30.95 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 Lamictal and Serax?

Lamictal contains Lamotrigine, while Serax contains Oxazepam — 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.