Celontin

(methsuximide)

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Prevents seizures.

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Our bottom line

Celontin (methsuximide) can prevent absence seizures when other medications don't work, but requires periodic blood monitoring because of some serious side effects.

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Quick facts about Celontin
  • Drug class: neurology
  • Rx status: Prescription only
  • Generic status: No lower cost generic available

Upsides

  • If you have tried other drugs for your absence seizures but they don't work, Celontin (methsuximide) may work for you.
  • Lowers the number of absence seizures you have. It also suppresses the activity in your brain that causes you to lose consciousness.
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What to expect from Celontin, on one page

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Downsides

  • People with mixed types of epilepsy who use Celontin (methsuximide) alone may experience more Tonic-clonic (grand mal) seizures, a more serious type of seizure.
  • Celontin (methsuximide) can slow your thinking and motor skills.
  • Stopping Celontin (methsuximide) suddenly can cause serious side effects including return of your seizures.
  • May cause you to have suicidal thoughts unlike some other anti-seizure medications.
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What to expect from Celontin, on one page

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How it works

Celontin (methsuximide) increases the seizure threshold (makes it harder for a seizure to happen). It also prevents the loss of consciousness which is common in absence (petit mal) seizures.

Quick facts about Celontin
  • Drug class: neurology
  • Rx status: Prescription only
  • Generic status: No lower cost generic available

Used for

  • Absence seizure

Dosage forms

  • Pill
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Prices and coupons

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What to expect when you take Celontin (methsuximide) for Absence Seizure

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  • First few hoursHours
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  • Effectiveness
  • Starts to kick in
    Full effects
  • First few hoursHours
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  • Possible side effects
  • Drowsiness
  • Dizziness
  • Headache
  • Blurred vision
  • Nausea or vomiting
  • Irregular bowels (constipation or diarrhea)
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Side effect rates for Celontin (methsuximide)

Risks and Warnings for Celontin (methsuximide)

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  • Celontin (methsuximide) may change the number of important blood cells in your body, such as white blood cells, platelets, and red blood cells. Talk to your doctor if you notice bruises that don't heal, prolonged bleeding, sore throat, or fever. You should be getting regular blood tests to make sure your blood counts don't change too much while taking Celontin (methsuximide).

Common concerns from people taking Celontin (methsuximide)

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Food
  • Take Celontin (methsuximide) with or without food.