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Cerebyx

Fosphenytoin
Switch to generic medication
Physician-administered

How to get this medication

Cerebyx is a specialty medication, which means it's costly and requires more steps than usual in order to get it. We break down the process for you.

Learn more about Cerebyx

Your GoodRx Guide to Specialty Pharmacy Hubs

Your GoodRx Guide to Specialty Pharmacy Hubs

Emilie White, PharmD
Affordability
What Are Manufacturer Copay Cards?

What Are Manufacturer Copay Cards?

Lauren Chase
Affordability
How to Write an Appeal Letter to Your Health Insurance Provider

How to Write an Appeal Letter to Your Health Insurance Provider

Gina Roberts-Grey
Affordability
Does Insurance Cover Biosimilars?

Does Insurance Cover Biosimilars?

Arnesa A. Howell
Affordability
How a Patient Advocacy Group Helped Me Afford My Medication

How a Patient Advocacy Group Helped Me Afford My Medication

Colleen Oakley
Affordability
A Guide to Medication Formularies: Understanding Your Prescription Medication Coverage
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A Guide to Medication Formularies: Understanding Your Prescription Medication Coverage

Maggie Aime, MSN, RN
Affordability
3:47
What Is Prior Authorization? A Look at the Process and Tips For Approval
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What Is Prior Authorization? A Look at the Process and Tips For Approval

Tori Marsh, MPH. Joshua Murdock, PharmD, BCBBS
Affordability
1:27
What is Step Therapy? How to Get Insurance to Pay for Your ‘Non-Preferred’ Medication

What is Step Therapy? How to Get Insurance to Pay for Your ‘Non-Preferred’ Medication

Alex Evans, PharmD, MBA
Affordability
What Should You Do If Your Medication Isn’t Covered by Insurance? 4 Tips and Tactics
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What Should You Do If Your Medication Isn’t Covered by Insurance? 4 Tips and Tactics

Tamara E. Holmes
Affordability
2:19

How to get Fosphenytoin

If you've been prescribed Fosphenytoin or are considering it, we'll walk you through what you need to know about this specialty medication.

About Cerebyx

prescription bottle
FOSPHENYTOIN prevents and controls seizures in people with epilepsy. It may also be used to prevent and treat seizures during or after brain surgery. It works by calming overactive nerves in your body.

Ways to save on Cerebyx

These programs and tips can help make your prescription more affordable
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Other Anti-epileptics

Related conditions

Epilepsy

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