Talk with your doctor before using this medicine if you have heart disease, chest pain (angina), blocked blood vessels, a lung infection, or kidney disease.
If you are pregnant or breastfeeding, talk to your doctor before using this medicine.
This medicine may make you dizzy or drowsy. Avoid driving or using machinery until you know how the medicine will affect you.
Dizziness may be worse when you stand up too fast after you have been sitting or lying down. Getting up slowly from a sitting or lying position may help decrease dizziness. If you start to feel faint or dizzy, sit or lie down.