Medicine Overview
Adult Dose
| Clinical Information | Administration Information |
|---|---|
|
Indication: Status Epilepticus Age: Adult |
Dose: Intravenous infusion – initially 15 mg Phenytoin Sodium equivalents/kg Frequency: once (initial dose) Note: Administer at a rate of 100-150 mg Phenytoin Sodium equivalents/minute. Fosphenytoin Sodium 1.5 mg is equivalent to Phenytoin Sodium 1 mg. |
|
Indication: Status Epilepticus Age: Adult |
Dose: Intramuscular injection or Intravenous infusion – 4-5 mg Phenytoin Sodium equivalents/kg Frequency: daily in 1-2 divided doses Note: For intravenous infusion, administer at a rate of 50-100 mg Phenytoin Sodium equivalents/minute. |
Child Dose
| Clinical Information | Administration Information |
|---|---|
|
Indication: Status Epilepticus Age: Child greater than 5 years |
Dose: Intravenous infusion – initially 15 mg Phenytoin Sodium equivalents (PE)/kg Note: At a rate of 2-3 mg Phenytoin Sodium equivalents (PE)/kg/minute; Renal impairment: Dose reduction or slower infusion may be needed; Hepatic impairment: Dose reduction or slower infusion may be needed |
|
Indication: Status Epilepticus Age: Child greater than 5 years |
Dose: Intravenous infusion – 4-5 mg Phenytoin Sodium equivalents (PE)/kg Frequency: daily in 1-4 divided doses Note: At a rate of 1-2 mg Phenytoin Sodium equivalents (PE)/kg/minute; Renal impairment: Dose reduction or slower infusion may be needed; Hepatic impairment: Dose reduction or slower infusion may be needed |
Renal Dose
| Clinical Information | Administration Information |
|---|---|
|
Condition: Renal impairment |
Dose: Not specified Note: Dose reduction or slower infusion may be needed |
Administration
- Given as IV infusion
- Must be diluted before use
Side Effect
- Pruritis (40-50%)
- Dizziness (31%)
- Somnolence (20%)
- Ataxia (11%)
- Nystagmus (15%)
- Tinnitus (6-10%)
- Deafness (2-5%)
- Somnolence (6-10%)
- Bruising (7%)
- Pruritis (2-5%)
- Nausea (5%)
- Vomiting (3%)
- Weakness (4%)
- Taste change (More than 1%)
- Hypotension (esp with high rates of IV infusion)
- Hypertension
- Dysarthria
- Fever
- Increased reflex
- Intracranial HTN
- Hypesthesia
- Sensory disturbances (burning, itching, paresthesia)
- withdrawal-precipitated seizures Rash
- Constipation
- Hypokalemia
- Cytopenias (can be fatal)
- Hepatic injury
- Myasthenia
- Pneumonia
- Hypotension
- vasodilation
- tachycardia
- Agitation
- asthenia
- headache
- EPS
- paresthesia
- stupor
- tremor
- Dry mouth
- nausea
- vomiting
- Pelvic and back pain
- Diplopia
- nystagmus
- Body as a Whole Allergic reactions in the form of rash and rarely more serious forms (DRESS) or anaphylaxis
- coarsening of facial features
- systemic lupus erythematosus
- periarteritis nodosa and immunoglobulin abnormalities
- Special Senses Altered taste sensation including metallic taste
- Urogenital Peyronie’s disease
- Asthenia
- ataxia
- decreased reflex
- dizziness
- headache
- paresthesia
- tremor
- Nausea
- vomiting
- Eccymosis
Drug Interaction
Drug Interaction
| Drug Name | Risk Factors |
|---|---|
|
Acute alcohol intake, Amiodarone, Chloramphenicol, Chlordiazepoxide, Cimetidine, Diazepam, Dicumarol, Disulfiram, Estrogens, Ethosuximide, Fluoxetine, H2-Antagonists, Halothane, Isoniazid, Methylphenidate, Phenothiazines, Phenylbutazone, Salicylates, Succinimides, Sulfonamides, Tolbutamide, Trazodone
|
May increase plasma Phenytoin concentrations
|
|
Carbamazepine, chronic alcohol abuse, Reserpine
|
May decrease plasma phenytoin concentrations
|
Disease Interaction
Disease Interaction
| Disease Name | Risk Factors |
|---|---|
|
Sinus Bradycardia
|
Risk of cardiac complications
|
|
Second/Third Degree AV Block
|
Risk of complete heart block
|
Pregnancy
Pregnancy
Lactation
Special Use
Precaution
Overdose
Pharmacology
Storage
Details coming soon
Data Sources
Clinical & regulatory information on this page is compiled from the following government sources:
DISCLAIMER: This drug information content is provided for informational purposes only and is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Patients should always consult their physician with any questions regarding a medical condition and to obtain medical advice and treatment.