Ethotoin Side Effects

Medically reviewed by Drugs.com. Last updated on Apr 10, 2025.

Applies to ethotoin: oral tablet.

Get emergency medical help if you have any of these signs of an allergic reaction while taking ethotoin: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Report any new or worsening symptoms to your doctor, such as: mood or behavior changes, depression, anxiety, or if you feel agitated, hostile, irritable, restless, hyperactive (mentally or physically), or have thoughts about suicide or hurting yourself.

Call your doctor at once if you have:

• sudden weakness or ill feeling, fever, chills, sore throat, mouth sores, pain when swallowing, swollen glands, skin sores, cold or flu symptoms;

• easy bruising or bleeding (nosebleeds, bleeding gums);

• liver problems--nausea, upper stomach pain, itching, tired feeling, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);

• lupus-like syndrome--joint pain or swelling, muscle pain, chest pain, shortness of breath, patchy skin color, swelling in your legs and feet; or

• severe skin reaction--swelling in your face or tongue, burning in your eyes, skin pain, followed by a red or purple skin rash that spreads (especially in the face or upper body) and causes blistering and peeling.

Common side effects may include:

• dizziness, tired feeling;

• nausea or vomiting;

• lack of balance or coordination;

• double vision, jerky eye movements; or

• changes in your gums.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.

See also:

Further information

Ethotoin side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Note: Medication side effects may be underreported. If you are experiencing side effects that are not listed, submit a report to the FDA by following this guide.

Medical Disclaimer