Zarontin Syrup (Ethosuximide) Customer Reviews

Zarontin Syrup

Rx Prescription Required    RxFormulation : Syrup

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Ethosuximide is prescribed to manage absence seizures, which are characterized by brief episodes of altered consciousness during which an individual may exhibit a fixed gaze, rapid eye blinking, and a lack of responsiveness to external stimuli.

Ethosuximide falls under the category of drugs referred to as anticonvulsants. Its mechanism of action involves diminishing abnormal electrical activity within the brain.

Uses and Dosage

Take this medication orally, with or without food, following the guidance of your doctor, typically once or twice daily.

When using the liquid form of this medication, employ a specialized measuring device or spoon to measure the dose accurately. Avoid using common household spoons, as they may not provide the correct dose.

The dosage is determined by factors such as your age, medical condition, ethosuximide blood levels, and response to the treatment. In the case of children, the dosage may also be adjusted based on their weight.

Adhering precisely to your doctor’s dosing instructions is of utmost importance. Your doctor will initiate treatment with a low dose and gradually increase it. It may take several weeks or months to determine the optimal dose for you and experience the full benefits of this medication. Consistently use this medication to maximize its effectiveness. To aid in remembering, take it at the same time(s) daily.

Do not discontinue this medication without consulting your doctor, as doing so may worsen certain conditions. Your dose may need to be tapered gradually.

Side Effects

Some side effects may occur that usually do not need medical attention:

  • diarrhea
  • stomach pain or cramps
  • loss of appetite
  • weight loss
  • swelling of the tongue
  • overgrowth of the gums
  • hiccups
  • drowsiness
  • dizziness
  • headache
  • suddenly awakening from sleep in a frightened state
  • difficulty concentrating
  • hair growth in unusual places

Inform your healthcare provider immediately if you experience any serious side effects:

  • sore throat, fever, chills, and other signs of infection
  • joint pain or swelling
  • muscle pain
  • red, itchy rash, especially on the face
  • fever with no known cause
  • hives
  • blisters


  • Prior to using ethosuximide, inform your doctor or pharmacist about any allergies you may have, whether to ethosuximide, methsuximide, or other substances. This product may contain inactive ingredients that can trigger allergic reactions or other complications.
  • Share your medical history with your doctor or pharmacist, particularly if you have a history of liver disease, kidney disease, or mental/mood disorders like depression or psychosis.
  • This medication may cause dizziness or drowsiness. Combining it with alcohol or marijuana can intensify these effects.
  • Therefore, refrain from activities requiring alertness, such as driving or operating machinery, until you can do so safely.
  • Liquid formulations of this medication may contain sugar and/or alcohol. If you have conditions like diabetes, alcohol dependence, liver disease, or any other conditions requiring dietary restrictions, exercise caution. Consult your doctor or pharmacist for guidance on using this product safely.
  • Older adults may be more susceptible to certain side effects of this drug, particularly dizziness, loss of coordination, or fainting, which can increase the risk of falls.
  • During pregnancy, use this medication only when it is clearly necessary. Discuss the potential risks and benefits with your doctor.
  • While this medication does pass into breast milk, it is unlikely to harm a nursing infant. Consult your doctor before breastfeeding.

Form and Strength

Zarontin Syrup is available in the following forms and strengths:

  • Zarontin Syrup syrup:
    • 250 mg / 5 mL


Does Zarontin affect sleep?

Yes, Zarontin can affect sleep. This medication is known to cause drowsiness. Zarontin can also cause difficulty sleeping and nightmares.

How quickly does Zarontin work?

It takes about 3 to 5 hours for your body to absorb the pill form of Zarontin and reach peak levels in the blood. It takes much longer to see the full effect of Zarontin.



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Can Drug Store has provided information from third parties intended to increase awareness and does not contain all the information about Zarontin Syrup (Ethosuximide). Talk to your doctor or a qualified medical practitioner for medical attention, advice, or if you have any concerns about Zarontin Syrup (Ethosuximide).