Celontin Side Effects – Causes and Effects


Category: Anti Epileptic

Drug Name: Celontin

General Usage: Used to treat Absence Seizures

Brief Info about Celontin in Drug:


Generic name of this drug is Methsuximide. Methsuximide is called an anticonvulsant. It is an anti-epileptic medication.

Methsuximide is used together with other medications or alone to cure petit mal seizures (also called as absence seizures) in children and adults.

Celontin Side Effects Explained Better:

Finally, some adverse effects occur when we have drugs because our body does not like sudden changes.  That’s why several drugs, mostly antidepressants & other psychotropic medicines are gradually built up in our system.  Introducing a new substance (a chemical) to our body can send it into frenzy, essentially forcing it to rewire the way that it acts. It could take some days for this to happen, during this time we’ll perceive lots of adverse effects.  This can also occur if you abruptly halt taking medicines that our body has adjusted to, & is the reason why we may need to taper off of some specific drugs.

Different types of adverse effects are listed below-

Frequent Celontin Side Effects (Commonly Seen)-

Less serious side effects may include:

  • Constipation
  • Weight loss
  • Diarrhea
  • Stomach pain
  • Nervousness
  • Dizziness
  • Drowsiness
  • Confusion
  • Loss of coordination or balance
  • Nausea
  • Headache
  • Blurred vision

Check with your doctor as you notice these symptoms-

Infrequent Celontin Side Effects (Professional Point of View)-

  • Symptoms of an allergic reaction-
    • Swelling of your lips, tongue, face, or throat
    • Hives
    • Difficult breathing
  • Signs of infection such as-
    • Flu symptoms
    • Chills
    • Fever
    • Sore throat
    • Feeling very tired or weak
    • Easy bleeding or bruising (bleeding gums, nosebleeds)
    • Mouth sores
  • Signs of liver damage-
    • Low fever
    • Nausea
    • Stomach pain
    • Clay-colored stools
    • Dark urine
    • Loss of appetite
  • Signs of jaundice-
    • Chest pain, muscle aches
    • Swelling or joint pain with fever
    • Swollen glands
    • Yellowing of the eyes or skin
    • Red spots, patchy skin color, or a butterfly-shaped skin rash over nose (worsens in sunlight) and your cheeks
  • Severe skin reaction-
  • Swelling of your tongue or face
  • Fever
  • Sore throat
  • Worsening of seizures
  • Skin pain, burning in your eyes followed by a purple or red skin rash that radiates (especially in upper body or the face) & causes peeling and blistering

Get medical aid as soon as you notice any of these side effects immediately.

Some new or undesired symptoms besides frequent & infrequent side effects-

  • Anxiety
  • Depressed
  • Trouble sleeping
  • Mood or behavior changes
  • Hostile
  • Irritable
  • Agitated
  • Hyperactive (physically or mentally)
  • Panic attacks
  • Aggressive
  • Restless
  • Have thoughts about hurting yourself or suicide

Celontin Overdose Side Effects (Require Immediate Medical Attention)-


When an extra quantity of a drug is taken, it affects our body system.

Overdose symptoms may include-

  • Extreme drowsiness
  • Vomiting
  • Shallow or weak breathing

If you feel these symptoms after gulping down an extra quantity of the drug, you must visit your doctor right away.

Celontin Drug Interaction Side Effects (Due to Reaction with Other drugs)-

Drugs are capable of interacting with other medicines while taking together results in unwanted effects. Speak to your doctor if you are having other medicines, particularly any of the following-

  • Narcotic pain medicine
  • Allergy or cold medicine
  • Medicines for anxiety or depression
  • Sedatives
  • Muscle relaxers
  • Sleeping pills

Above listed drugs can add to sleepiness that is caused by methsuximide

  • Phenytoin (Dilantin).
  • Phenobarbital (Solfoton, Luminal)

Notify your medical health care professional about all other seizure drugs you consume particularly above mentioned drugs.

Celontin Prolonged Use Side Effects (When Used for Longer Periods)-

Drugs will certainly affect our body system if they are consumed for a long period of time because medicines do not work as efficiently as it should have been in the course of time & may need higher doses to get similar effects. If it happens like this, you should speak with your medical health provider promptly.