Phenytoin 100mg Uses

Phenytoin 100mg is prescribed to:

  • Control generalized tonic-clonic seizures (grand mal).
  • Manage partial seizures with or without secondary generalization.
  • Prevent seizures during or after brain surgery or trauma.
  • Treat seizure-related conditions as directed by a healthcare provider.

How Does Phenytoin 100mg Work

Phenytoin stabilizes the electrical activity of neurons in the brain by reducing the spread of abnormal electrical discharges. It achieves this by blocking voltage-dependent sodium channels, preventing repetitive firing of neurons and controlling seizure activity.

How to Use Phenytoin 100mg

  • Take Phenytoin 100mg exactly as prescribed by your healthcare provider, usually 1–3 times daily.
  • Swallow the capsule whole with a glass of water, with or without food.
  • Maintain a consistent schedule, taking the medication at the same time each day for optimal control of seizures.
  • Do not stop taking Phenytoin suddenly, as this may lead to increased seizure activity.

Side Effects

Common side effects may include:

  • Drowsiness or dizziness
  • Nausea or vomiting
  • Headache
  • Gum overgrowth (gingival hyperplasia)
  • Skin rash

Rare but serious side effects include:

  • Severe allergic reactions, such as rash, swelling, or difficulty breathing
  • Liver damage, indicated by yellowing of the skin or eyes
  • Low blood counts, causing fatigue or increased risk of infection
  • Severe skin reactions, such as Stevens-Johnson syndrome

Drug Interactions

Phenytoin 100mg may interact with:

  • Other antiepileptic drugs, which may require dosage adjustments.
  • Blood thinners like warfarin, potentially altering blood clotting.
  • Birth control pills, reducing their effectiveness.
  • Alcohol, which can affect the metabolism and efficacy of Phenytoin.

Inform your doctor of all medications, supplements, or herbal products you are using to avoid potential interactions.

Food Interactions

  • Take Phenytoin with food if it causes stomach upset, unless directed otherwise.
  • Avoid alcohol, as it can increase side effects like dizziness and interfere with seizure control.

Phenytoin 100mg Contraindications

This medication is not suitable for:

  • Individuals allergic to Phenytoin or other hydantoins.
  • Patients with liver problems or low blood protein levels without proper monitoring.
  • Individuals with a history of severe drug-induced rash or skin reactions.

Precautions and Warnings

  • Inform your doctor if you have a history of liver disease, blood disorders, or heart conditions.
  • Use with caution in elderly patients, as they may be more sensitive to side effects.
  • Regular monitoring of blood levels, liver function, and blood counts is recommended during treatment.
  • Pregnant women should consult their doctor, as Phenytoin may harm the unborn baby, but untreated seizures also pose risks.

Storage

  • Store Phenytoin 100mg capsules at room temperature, away from moisture, heat, and direct sunlight.
  • Keep the capsules in their original packaging and out of reach of children and pets.
  • Dispose of unused or expired capsules responsibly, following local disposal guidelines.

Safety Information

  • Use Phenytoin 100mg only as directed by your healthcare provider.
  • Do not skip doses or stop the medication abruptly without consulting your doctor.
  • Report any unusual symptoms, such as severe skin reactions, persistent dizziness, or yellowing of the skin, to your doctor immediately.
Quantity 120, 240, 360, 480
Manufacturer Abbott
Indian Brand Eptoin 100mg
US Brand Name Dilantin, Epanutin, Phenytoin
Generic Name Phenytoin
Dosage 100mg
Drug Type Tablets
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