More common side effects may include:
Abdominal pain, diarrhea, headache

Rare side effects may include:
Abnormal sense of smell, acne, allergic reaction, anemia, apathy, back pain, black stools, blood disorders, blood in urine, burping, change in bowel habits, chest pain, chills, confusion, constipation, coughing, cramps, difficulty breathing, difficulty swallowing, dizziness, dry mouth, ear infection, earache, enlarged abdomen, enlarged thyroid gland, eye infection, facial swelling, fast or irregular heartbeat, fatigue, fever, flu-like symptoms, flushing, frequent or increased urination, fungal infections, general feeling of illness, hernia, hiccups, high blood pressure, hives, hot flushes, impotence, inability to sleep, increased appetite, indigestion, itching, leg and body swelling, liver problems, loss of appetite, loss of taste, lymph node problems, menstrual problems, migraine, mouth and throat problems, nausea, nervousness, nosebleed, pain, painful joints and muscles, painful urination, prickly or burning sensation, rash, rectal problems, rigidity, ringing in the ears, runny nose, sensitivity to touch, sinus problems, sleep disorders, sleepiness, sore throat, stomach bleeding, stomach pain, stomach upset, sweating, swelling, taste changes, thirst, tremors, urinary tract infection, vaginitis, vertigo, vision changes, vomiting, weakness, weight changes, worsening of arthritis, worsening of asthma, worsening of depression