KEPPRA XR vs SERAX

Independent side-by-side comparison.

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

Possible drug interaction. KEPPRA XR 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	KEPPRA XR	SERAX
Rating	70/100	New
Pharmacy pays	~$2.34 /30	~$31.59 /30
Type	RX	RX
Active ingredient	LEVETIRACETAM	OXAZEPAM
Manufacturer	Ucb Inc	Alpharma US Pharms
Dosage forms	Tablet, extended release	Capsule
Drug class	—	—
Boxed warning	None	None
Half-life	about 7 hours (the label states 7 ± 1 hour in adults)	—
Treats	Partial Epilepsies, Tonic-Clonic Epilepsy, Juvenile Myoclonic Epilepsy	Alcohol Withdrawal Delirium, Anxiety Disorders, Partial Epilepsies

keppra xr serax

Rating

70/100

New

Pharmacy pays

~$2.34 /30

~$31.59 /30

Type

Active ingredient

LEVETIRACETAM

OXAZEPAM

Manufacturer

Ucb Inc

Alpharma US Pharms

Dosage forms

Tablet, extended release

Capsule

Drug class

—

Boxed warning

None

Half-life

about 7 hours (the label states 7 ± 1 hour in adults)

—

Treats

Partial Epilepsies, Tonic-Clonic Epilepsy, Juvenile Myoclonic Epilepsy

Alcohol Withdrawal Delirium, Anxiety Disorders, Partial Epilepsies

Frequently asked questions

Which is cheaper, Keppra XR or Serax?

Keppra XR costs pharmacies less to acquire — about $2.34 vs $31.59 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 Keppra XR and Serax?

Keppra XR contains Levetiracetam, 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.