Terbinafine Side Effects

Possible side effects of oral terbinafine are listed below. Call your doctor if they are severe or persist after a few days.

• Indigestion
• Diarrhea
• Headache
• Itching
• Mood changes or depression
• Changes in sleep patterns

Some of the other side effects of terbinafine are more serious. Call your doctor right away or seek emergency medical attention if you develop the following signs and symptoms:

• Severe skin rash that keeps worsening, hives, itching, peeling or blistering skin (signs of serious skin reactions)
• Nausea, vomiting, loss of appetite, weight loss
• Unusual tiredness
• Right upper stomach pain, yellowing of the eyes and skin, pale stools, dark urine
• Flu-like symptoms such as fever, chills, cough, sore throat
• Swelling in the face, eyes, lips, tongue, throat, hands, lower legs, ankles, or feet
• Hoarseness
• Difficulty breathing or swallowing
• Swollen lymph nodes
• Mouth sores
• Chest pain
• Unusual bruising or bleeding
• Fast or irregular heartbeat
• Blood in the urine

The above list may not include all the potential side effects of terbinafine. Contact your healthcare provider if your side effects are unusual or severe or if they do not get better over time. You can also report unusual side effects to the Food and Drug Administration at 1-800-FDA-1088.

Terbinafine Overdose: In case of an overdose of terbinafine, call your doctor immediately. You can also call the national poison control center at 1-800-222-1222. Call 911 or emergency services if a person has collapsed, cannot breathe, has had a seizure, or cannot be awakened. Signs and symptoms of an overdose may include stomach pain, nausea, vomiting, dizziness, headache, rash, and frequent urination.

Source: FDA