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:
Dizziness; flushing; headache; heartburn; mild back or muscle pain; stomach upset; stuffy or runny nose.
Seek medical attention right away if any of these severe side effects occur:
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; fainting; fast or irregular heartbeat; memory loss; numbness of an arm or leg; one-sided weakness; prolonged, painful erection; red, swollen, blistered, or peeling skin; ringing in the ears; seizures; severe or persistent back or muscle pain; severe or persistent dizziness; severe or persistent vision changes; sudden decrease or loss of hearing; sudden decrease or loss of vision in one or both 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.
Source : http://healthcare-economist.com/?83ca2=599552bfe93b4