What should I know before taking albuterol extended-release tablets?

Albuterol extended-release tablets may sometimes lead to the sudden exacerbation of breathing problems. This is known as paradoxical bronchospasm. If this occurs, get emergency medical attention right away. The risk for this and other potentially serious side effects is increased if you take more than the recommended dosage, so use this medication according to your doctor's directions. Overdose may lead to heart attack or even death. If you start to experience symptoms of an overdose, such as irregular heartbeat, changes in blood pressure, nervousness, dizziness, insomnia, nausea, headache or tremors, get emergency medical attention. Albuterol extended-release tablets may also cause cardiovascular problems, including changes in blood pressure or irregular heart rate. These risks are increased in people who already have existing heart conditions, so tell your doctor if you have a history of heart problems before taking this medication.