Clonidine is a medication that can be used to treat high blood pressure, attention deficit hyperactivity disorder (ADHD), anxiety, and other conditions. One of the potential side effects of clonidine is a decrease in heart rate, which is why it is important to monitor heart rate when taking this medication. In some cases, a doctor may prescribe clonidine to help with high blood pressure, which can also help to decrease the risk of heart disease. However, it is important to talk to a doctor before taking any medication to ensure that it is safe and appropriate for your individual health needs.