MedDataToolPhenytek is a medication used to treat tonic-clonic (grand mal) and psychomotor (temporal lobe) seizures, as well as to prevent seizures during or after neurosurgery. It works by stabilizing electrical activity in the brain to help control seizures. Adults typically start with one 100 mg capsule taken three times a day, and the dose can be adjusted up to a maximum of two capsules three times a day, depending on individual needs. It's important to know that Phenytek should not be taken by anyone who has had a serious allergic reaction to it or similar medications. Additionally, it should not be taken with delavirdine, as this can affect how well the medication works.
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Uses
- Tonic-clonic (grand mal) seizures.
- Psychomotor (temporal lobe) seizures.
- Prevention and treatment of seizures during or after neurosurgery.
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Dosage
Adults start with one 100 mg capsule three times a day.
Most adults maintain one capsule three to four times a day.
Pediatric starting dose is 5 mg/kg/day in two to three doses.
Maximum pediatric dose is 300 mg daily.
Elderly patients may need lower or less frequent doses.
Always follow your doctor's specific instructions for your dose.
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Side effects
Common
Nystagmusataxiaslurred speechdecreased coordinationsomnolence
Serious
Suicidal thoughtssevere skin reactionsliver damageblood disorders
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Warnings
⚠ Important warnings
- Risk of withdrawal seizures if stopped suddenly.
- May cause suicidal behavior and ideation.
- Serious skin reactions can occur.
- Monitor for liver injury and blood complications.
- Not recommended for patients with renal or liver disease.
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Drug interactions
- Fluconazolemay increase phenytoin levelsCaution
- Carbamazepinemay decrease phenytoin levelsCaution
- Warfarinmay alter blood clotting responsesCaution
- John’s wortmay decrease phenytoin levelsCaution
- Antacidsmay affect phenytoin absorption.Caution
Ask about this drug
Answers pulled from the FDA label only.
Medical Disclaimer: This content is provided for informational and educational purposes only and is not intended as medical advice. Always consult a qualified healthcare provider before taking any medication.
Data Source: Publicly available drug labeling information from the U.S. Food and Drug Administration (FDA).
Data Source: Publicly available drug labeling information from the U.S. Food and Drug Administration (FDA).