All medicines may cause side effects, but many people have no, or minor, side effects.
Check with your doctor if any of these most common side effects persist or become bothersome:
Diarrhea; dizziness; drowsiness; headache; increased salivation; loss of appetite; metallic taste; mouth sores; nausea; restlessness; stomach pain; vomiting; weight loss.
Seek medical attention right away if any of these severe side effects occur:
Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); change in sense of smell; depression; easy bruising or bleeding; low blood sugar (eg, increased heartbeat, headache, chills, sweating, tremor, increased hunger, changes in vision, nervousness, weakness, dizziness, drowsiness, fainting); tingling of hands or feet; vision changes (eg, loss of vision); yellowing of the skin or eyes.
This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider.