It is very important that your doctor check your progress at regular visits to make sure that this medicine is working properly. Blood tests may be needed to check for unwanted effects.
This medicine can cause a change in heart rhythm called prolongation of the QT interval. This condition may change the way your heart beats (faster or slower) and can cause chest pain, dizziness, fainting, or shortness of breath. Contact your doctor right away if you have any of these symptoms or any questions.
This medicine may decrease bone mineral density when used for a long time. A low bone mineral density can cause weak bones or osteoporosis. If you have any questions about this ask your doctor.