LAMICTAL CD vs NEURONTIN

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 20, 2026·How we rate

Possible drug interaction. LAMICTAL CD and NEURONTIN 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 CD	NEURONTIN
Rating	70/100	New
Pharmacy pays	~$4.39 /30	~$1.22 /30
Type	RX	RX
Active ingredient	LAMOTRIGINE	GABAPENTIN
Manufacturer	Glaxosmithkline	Parke Davis
Dosage forms	Tablet	Capsule, Solution, Tablet
Drug class	Anti-Epileptic Agent	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	about 5 to 7 hours in adults with normal kidney function
Treats	Bipolar Disorder, Partial Epilepsies, Seizures	Bipolar Disorder, Partial Epilepsies, Phobic Disorders

lamictal cd neurontin

Rating

70/100

New

Pharmacy pays

~$4.39 /30

~$1.22 /30

Type

Active ingredient

LAMOTRIGINE

GABAPENTIN

Manufacturer

Glaxosmithkline

Parke Davis

Dosage forms

Tablet

Capsule, Solution, Tablet

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

about 5 to 7 hours in adults with normal kidney function

Treats

Bipolar Disorder, Partial Epilepsies, Seizures

Bipolar Disorder, Partial Epilepsies, Phobic Disorders

Frequently asked questions

Which is cheaper, Lamictal Cd or Neurontin?

Neurontin costs pharmacies less to acquire — about $1.22 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 Cd and Neurontin?

Lamictal Cd contains Lamotrigine, while Neurontin contains Gabapentin — 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.