Get emergency medical help if you have signs of an allergic reaction (hives, difficult breathing, swelling in your face or throat) or a severe skin reaction (fever, sore throat, burning eyes, skin pain, red or purple skin rash with blistering and peeling).
Call your doctor at once if you have:
numbness, tingling, or burning pain in your hands or feet;
confusion, trouble with daily activities;
fever, chills, flu symptoms, white patches or sores inside your mouth or throat;
liver problems--loss of appetite, stomach pain (upper right side), dark urine, jaundice (yellowing of the skin or eyes);
kidney problems--little or no urination, swelling in your feet or ankles, feeling tired or short of breath, foamy urine;
lupus-like symptoms--muscle or joint pain, flu symptoms, chest pain, and a rash or patchy skin color that worsens in sunlight; or
signs of stomach bleeding--bloody or tarry stools, coughing up blood or vomit that looks like coffee grounds.
Common side effects may include:
nausea, vomiting, upset stomach, diarrhea;
headache, tiredness;
rash;
sleep problems (insomnia); or
dizziness.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Griseofulvin side effects (more detail)
