Wednesday, July 8, 2026

Drug profile · INN

fosphenytoin sodium

fosphenytoin sodium (CEREBYX) is a sodium channel alpha subunit blocker. Associated with Regeneron Ireland Designated Activity Company (DAC). Route of administration: injection. Current US regulatory status: approved.

FDA: approved
US status approved
Patents linked 0
Pipeline programs 0
News articles 0
Drug details — fosphenytoin sodium
US status
approved
Class
Route
INJECTION
Patents
0
Programs
0
Data quality
0.89

Quick answer

fosphenytoin sodium (CEREBYX) is a sodium channel alpha subunit blocker. Associated with Regeneron Ireland Designated Activity Company (DAC). Route of administration: injection. Current US regulatory status: approved.

Key facts

INN fosphenytoin sodium
Brand CEREBYX
Mechanism Sodium channel alpha subunit blocker
Target Sodium channel alpha subunit
Route INJECTION
Formulation INJECTABLE

Mechanism of action

Sodium channel alpha subunit blocker

Primary target: Sodium channel alpha subunit

Approval history

Authority Status Date
FDA approved

Related & competitor drugs

  1. carbamazepine Sodium channel alpha subunit blocker
  2. disopyramide phosphate Sodium channel alpha subunit blocker
  3. eslicarbazepine acetate Nervous system (N03)
  4. lacosamide Nervous system (N03)
  5. lamotrigine Sodium channel alpha subunit blocker
  6. lidocaine Nervous system (N01)

Frequently asked questions

What is fosphenytoin sodium?

fosphenytoin sodium (CEREBYX) is a sodium channel alpha subunit blocker. Associated with Regeneron Ireland Designated Activity Company (DAC). Route of administration: injection. Current US regulatory status: approved.

What is the brand name for fosphenytoin sodium?

CEREBYX is a marketed brand name for fosphenytoin sodium. Check FDA Drugs@FDA for the current US label holder and prescribing information.

What is the US approval status of fosphenytoin sodium?

fosphenytoin sodium has approved status in the United States according to our Drugs@FDA-derived records. Verify on the official FDA label before clinical or commercial decisions.