LAMICTAL XR vs STAVZOR

Independent side-by-side comparison.

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

Possible drug interaction. LAMICTAL XR and STAVZOR 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 XR	STAVZOR
Rating	New	70/100
Pharmacy pays	~$4.39 /30	~$1.02 /30
Type	RX	RX
Active ingredient	LAMOTRIGINE	VALPROIC ACID
Manufacturer	Smithkline Beecham	Bionpharma
Dosage forms	Tablet, extended release, Kit	Capsule, delayed release
Drug class	Anti-Epileptic Agent	Anti-Epileptic Agent
Boxed warning	None	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	Alzheimer Disease, Bipolar Disorder, Epilepsy

lamictal xr stavzor

Rating

New

70/100

Pharmacy pays

~$4.39 /30

~$1.02 /30

Type

Active ingredient

LAMOTRIGINE

VALPROIC ACID

Manufacturer

Smithkline Beecham

Bionpharma

Dosage forms

Tablet, extended release, Kit

Capsule, delayed release

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

Alzheimer Disease, Bipolar Disorder, Epilepsy

Frequently asked questions

Which is cheaper, Lamictal XR or Stavzor?

Stavzor costs pharmacies less to acquire — about $1.02 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 Lamictal XR and Stavzor?

Lamictal XR contains Lamotrigine, while Stavzor contains Valproic Acid — 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.